Tuning device, drum, and method and kit for retrofitting a drum

Abstract

A tuning device for a drum includes a drum attachment mechanism having a shell attachment means fixedly attachable to a drum shell and a hoop attachment means for engaging and tensioning a drum head. The drum attachment mechanism further includes at least one non-rotating annular ring with a circumferential slot and a plurality of fasteners forming part of the shell or hoop attachment means. A tuning ring is concentrically disposed between opposing edges of the non-rotating annular ring and is rotatable therewithin. The tuning ring includes a plurality of helical channels that accommodate the fasteners. A tuning tab extends outwardly from the tuning ring through the circumferential slot to control rotation of the tuning ring. Rotation of the tuning ring causes axial movement of the tuning ring and the non-rotating annular ring, thereby increasing or decreasing tension on the drum head.

Description

Docket No. P13307PC00TUNING DEVICE, DRUM, AND METHOD AND KIT FOR RETROFITTING A DRUMFIELD

[0001] The present specification relates to musical instruments and in particular, a device for tuning a drum.BACKGROUND

[0002] Modern drums, such as the drum 102 shown in Figure 1 , comprise a cylindrical drum shell 104 with an open head covered by a drum head 108. The drum head comprises a membrane stretched over an annular frame, with tension applied to the drum head 108 via a counter hoop 112. Tension rods 114 distributed around the drum head 108 connect the counter hoop 112 to lugs 116 that are fixed to the drum shell 104 and are tightened to pull the counter hoop 112 towards the lugs 116. Tension in the drum head 108 can thus be adjusted by tightening each of the tension rods with a detachable drum key to change pitch. Tuning drums can be challenging, primarily due to the need for even tension across all tension rods. Each rod must be individually adjusted, often requiring multiple passes to achieve the right tone and uniform tension across all tension rods. Uneven tension can negatively impact the sound, making precise adjustments essential. Moreover, drum lugs are known to slip, causing tuning instability, and the drum cannot be tuned if the drum key is misplaced.

[0003] US Patent No. 4,154,136 provides a pitch control assembly including a tension adjusting ring with inclined slots which is rotated via an adjusting screw. Since the tension adjusting ring rotates around the outside of the drum body, it is incompatible with drum accessories, such as microphones and drum triggers, that are typically clipped to the rim of the drum. US Patent No. 2,550,249 provides a drum tuning device with an annular tuning band which is rotatable by turning a knob that controls a small gear. Since the annular tuning device is installed within the drum body, it is difficult to install and is only compatible with bespoke drums.Docket No. P13307PC00SUMMARY

[0004] The present specification provides a tuning device that replaces individual tension rods with a tuning ring, allowing the tension to be more uniformly controlled across the drum head. The tuning device includes a non-rotating ring disposed around the rotatable tuning ring that allows for tuning without obstructing rim-mounted accessories and that can be fitted to a wide range of existing drums. The tuning device also and prevents these accessories, including the drum head itself, from rotational repositioning during tensioning.

[0005] An aspect of the specification provides a tuning device for a drum including a hoop attachment means with a first non-rotating annular ring that is concentrically attachable to a drum head, and a shell attachment means with a second non-rotating annular ring that is concentrically aligned with the first annular ring and fixedly attachable to the drum shell. The second annular ring includes a plurality of axial slots and a circumferential slot. A tuning ring is concentrically disposed within the second annular ring and is rotatable therewithin. The tuning ring includes a plurality of helical channels. A tuning tab extends from the tuning ring through the circumferential slot of the shell attachment means to control rotation of the tuning ring. A plurality of fasteners extend from the first annular ring through the axial slots of the second annular ring and through the helical channels of the tuning ring. Rotation of the tuning ring causes each helical channel to urge a corresponding fastener axially within the axial slot, causing the first annular ring to move axially relative to the second annular ring.

[0006] In one example, the first annular ring is integral with a counter hoop of the drum.

[0007] In another example, the second annular ring is attachable to the shell through lugs disposed on the shell.

[0008] In one example, the shell attachment means includes a plurality of spacers for attaching the second annular ring to the lugs.

[0009] In another example, opposing edges of the second annular ring are crimped, flanged, or tabbed to maintain the tuning ring within the second annular ring and to impede axial movement of the tuning ring.Docket No. P13307PC00

[0010] In one example, the slope and length of the helical channels are selected according to the type of drum.

[0011] In another example, the tuning ring is threadably received by the second annular ring.

[0012] In one example, the tuning tab includes an actuator for controlling movement of the tuning tab within the circumferential slot.

[0013] In another example, the tuning tab includes a locking mechanism configured to impede rotation of the tuning ring in a locked configuration and to permit rotation in an unlocked configuration.

[0014] A further aspect of the specification provides a drum including a shell with an open head, a drum head covering the open head, and a counter hoop concentrically attached to the drum head. A shell attachment means is concentrically disposed around the shell and includes a non-rotating annular ring having a plurality of axial slots and a circumferential slot. Atuning ring is concentrically disposed within the non-rotating annular ring and is rotatable therewithin. The tuning ring includes a plurality of helical channels. A tuning tab extends from the tuning ring through the circumferential slot of the non-rotating annular ring to control rotation of the tuning ring. A plurality of fasteners extend from the counter hoop through the axial slots of the non-rotating annular ring and through the helical channels of the tuning ring. Rotation of the tuning ring causes each helical channel to urge a fastener axially within a corresponding axial slot, thereby moving the counter hoop axially relative to the non-rotating annular ring.

[0015] In one example, the non-rotating annular ring is integral with the drum shell.

[0016] In another example, opposing edges of the non-rotating annular ring are crimped, flanged, or tabbed to maintain the tuning ring within the annular ring and to impede axial movement of the tuning ring.

[0017] In one example, the slope of the helical channels is parabolic.

[0018] In another example, the tuning ring is threadably received by the non-rotating annular ring.Docket No. P13307PC00

[0019] In one example, the tuning tab includes an actuator for controlling its movement within the circumferential slot.

[0020] In another example, the tuning tab includes a locking mechanism to prevent rotation of the tuning ring in a locked configuration and to allow rotation in an unlocked configuration.

[0021] A further aspect of the specification provides a method of retrofitting a drum with a tuning device. The method includes concentrically attaching a first non-rotating annular ring to a drum head of the drum and concentrically attaching a second nonrotating annular ring to a shell of the drum while aligning the second annular ring with the first annular ring. The second annular ring includes a plurality of axial slots and a circumferential slot. The method includes concentrically disposing a tuning ring within the second annular ring, the tuning ring having a plurality of helical channels. A tuning tab is inserted through the circumferential slot of the second annular ring and attached to the tuning ring. A plurality of fasteners are inserted through the axial slots of the second annular ring and through the helical channels of the tuning ring, and the fasteners are attached to the first annular ring.

[0022] In one example, the second annular ring is attached to the drum shell through lugs disposed on the shell.

[0023] In another example, the second annular ring is attached to the lugs through a plurality of spacers.

[0024] In one example, the method includes selecting the tuning ring according to the slope and length of the helical channels and the type of drum.

[0025] A further aspect of the specification provides a kit for retrofitting a drum. The kit includes a hoop attachment means with a first non-rotating annular ring attachable to a drum head and a shell attachment means with a second non-rotating annular ring alignable with the first annular ring and attachable to the drum shell. The second annular ring includes a plurality of axial slots and a circumferential slot. A tuning ring is disposable within the second annular ring and rotatable therewithin. The tuning ring includes a plurality of helical channels. A tuning tab is configured to extend from the tuning ringDocket No. P13307PC00 through the circumferential slot of the second annular ring to control rotation of the tuning ring. A plurality of fasteners are configured to extend from the first annular ring through the axial slots of the second annular ring and through the helical channels of the tuning ring.

[0026] In one example, the kit includes instructions describing attachment of the first annular ring to the drum head, attachment of the second annular ring to the shell, alignment of the annular rings, installation of the tuning ring and tuning tab, insertion of the fasteners through the axial and helical channels, and attachment of the fasteners to the first annular ring.

[0027] A further aspect of the specification provides a tuning device for a drum including a drum attachment mechanism having a shell attachment means fixed to the drum shell, a hoop attachment means engaging a drum head, and at least one nonrotating annular ring with a circumferential slot. The device includes a plurality of fasteners that form part of the shell or hoop attachment means. A tuning ring is concentrically disposed between two opposing edges of the non-rotating annular ring and is rotatable therewithin. The tuning ring includes a plurality of helical channels that accommodate the fasteners. A tuning tab extends outwardly from the tuning ring through the circumferential slot of the non-rotating annular ring to control rotation of the tuning ring. Rotation of the tuning ring urges the fasteners axially, which in turn urges the non-rotating annular ring axially to increase or decrease tension on the drum head.

[0028] In one example, the hoop attachment means is integral with the counter hoop of the drum.

[0029] In another example, the hoop attachment means includes the non-rotating annular ring.

[0030] In one example, the shell attachment means includes the non-rotating annular ring.

[0031] In another example, the shell attachment means includes a plurality of brackets for attaching the non-rotating annular ring to lugs on the drum shell.

[0032] In one example, opposing edges of the non-rotating annular ring are crimped,Docket No. P13307PC00 flanged, or tabbed to retain the tuning ring and to restrict its axial movement.

[0033] In another example, the helical channels have a parabolic slope.

[0034] In one example, the tuning tab includes an actuator for controlling movement of the tuning tab within the circumferential slot.

[0035] In another example, the tuning tab includes a locking mechanism that prevents rotation of the tuning ring in a locked configuration and allows rotation in an unlocked configuration.

[0036] An aspect of the specification provides a tuning device for a drum including a drum attachment mechanism having a shell attachment means fixed to the shell of the drum and a hoop attachment means engaging a drum head of the drum. The drum attachment mechanism includes at least one non-rotating annular ring with a circumferential slot and a plurality of fasteners that form part of the shell attachment means or the hoop attachment means. A tuning ring is concentrically disposed between two opposing edges of the non-rotating annular ring and is rotatable therewithin. The tuning ring includes a plurality of helical channels for accommodating the fasteners. A tuning tab extends outwardly from the tuning ring through the circumferential slot of the non-rotating annular ring to control rotation of the tuning ring. Rotation of the tuning ring urges the fasteners axially, which in turn urges the non-rotating annular ring axially, thereby increasing or decreasing tension on the drum head.

[0037] In one example, the hoop attachment means is integral with a counter hoop of the drum. In another example, the hoop attachment means includes the non-rotating annular ring. In one example, the shell attachment means includes the non-rotating annular ring. In another example, the shell attachment means includes a plurality of brackets configured to attach the non-rotating annular ring to lugs disposed on the drum shell. In one example, opposing edges of the non-rotating annular ring are crimped, flanged, or tabbed to retain the tuning ring therewithin and restrict axial movement of the tuning ring. In another example, the helical channels have a parabolic slope. In one example, the tuning tab includes an actuator for controlling movement of the tuning tab within the circumferential slot. In another example, the tuning tab includes a lockingDocket No. P13307PC00 mechanism that prevents rotation of the tuning ring in a locked configuration and allows rotation in an unlocked configuration.

[0038] A further aspect of the specification provides a drum including a shell with an open head, a drum head covering the open head, and a drum attachment mechanism fixed to the shell. The drum attachment mechanism includes a shell attachment means fixed to the shell and a hoop attachment means engaging the drum head. The drum further includes at least one non-rotating annular ring with a circumferential slot, a tuning ring rotatable within the annular ring, and a plurality of fasteners extending through helical channels of the tuning ring. A tuning tab extends outwardly from the tuning ring through the circumferential slot to control rotation of the tuning ring. Rotation of the tuning ring urges the fasteners axially, thereby urging the non-rotating annular ring axially and adjusting tension on the drum head.

[0039] In one example, the hoop attachment means is integral with the counter hoop of the drum. In another example, the shell attachment means includes a plurality of brackets that attach the non-rotating annular ring to lugs on the drum shell. In one example, the opposing edges of the non-rotating annular ring are crimped, flanged, or tabbed to retain the tuning ring therewithin. In another example, the helical channels have a parabolic slope.

[0040] A further aspect of the specification provides a method of retrofitting a drum with a tuning device. The method includes providing a drum attachment mechanism including at least one non-rotating annular ring having a circumferential slot, a shell attachment means fixed to a drum shell, and a hoop attachment means engaging a drum head. A tuning ring is concentrically disposed between two opposing edges of the nonrotating annular ring, and a tuning tab is inserted through the circumferential slot and attached to the tuning ring. A plurality of fasteners are inserted through the helical channels of the tuning ring, and the tuning ring is rotated to urge the fasteners axially, thereby urging the non-rotating annular ring axially and adjusting tension on the drum head.

[0041] In one example, the method includes attaching the non-rotating annular ring to lugs on the drum shell, and in another example, the annular ring is attached to the lugsDocket No. P13307PC00 using a plurality of brackets or spacers. In one example, the tuning ring is selected according to the slope and length of the helical channels and the type of drum.

[0042] A further aspect of the specification provides a kit for retrofitting a drum. The kit includes a drum attachment mechanism having a shell attachment means fixedly attachable to a drum shell and a hoop attachment means engageable with a drum head. The kit further includes at least one non-rotating annular ring with a circumferential slot, a tuning ring rotatable between two opposing edges of the annular ring, and a plurality of helical channels for accommodating fasteners. A tuning tab extends outwardly from the tuning ring through the circumferential slot of the non-rotating annular ring to control rotation of the tuning ring. The kit also includes a plurality of fasteners configured to urge the non-rotating annular ring axially when the tuning ring is rotated, thereby adjusting tension on the drum head.

[0043] In one example, the helical channels have a parabolic slope. In another example, the kit includes instructions for retrofitting the drum, the instructions including attaching the shell attachment means to the drum shell, engaging the hoop attachment means with the drum head, disposing the tuning ring between the opposing edges of the non-rotating annular ring, inserting the tuning tab through the circumferential slot, attaching the tuning tab to the tuning ring, inserting the fasteners through the helical channels, and rotating the tuning ring to adjust drum head tension.

[0044] These together with other aspects and advantages which will be subsequently apparent, reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout.BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Embodiments are described with reference to the following figures.

[0046] Figure 1 is a perspective view of a drum according to the prior art.

[0047] Figure 2 is a perspective view of a drum with an example tuning device including a tuning ring, a shell attachment means, and a hoop attachment means.Docket No. P13307PC00

[0048] Figure 3 is a perspective view of the tuning ring according to Figure 2.

[0049] Figure 4 is a perspective view of the shell attachment means according to Figure 2.

[0050] Figure 5 is a perspective view of the hoop attachment means according to Figure 2.

[0051] Figure 6 is an exploded view of the example tuning device of Figure 2.

[0052] Figure 7 is a perspective view of an assembly including the tuning ring of Figure2.

[0053] Figure 8 is a perspective view of an assembly including the tuning ring and shell attachment means of Figure 2.

[0054] Figure 9 is a perspective view of the example tuning device of Figure 2.

[0055] Figure 10 shows a partial cross-sectional view of the tuning device of Figure 2.

[0056] Figure 11 is a flowchart of an example method of retrofitting a drum with a tuning device.

[0057] Figure 12 shows another exemplary tuning device, according to a further aspect of the specification.

[0058] Figure 13A is a top view of the tuning device of Figure 12.

[0059] Figure 13B is a side view of the tuning device of Figure 12.

[0060] Figure 14 is an isometric view of an example tuning ring for the tuning device of Figure 12.

[0061] Figure 15 is an isometric view of an exemplary drum attachment means for the tuning device of Figure 12.

[0062] Figure 16 is an exploded view of the tuning device of Figure 12, according to one example.

[0063] Figure 17 is an exploded view of an exemplary attachment assembly for the tuning device of Figure 12.Docket No. P13307PC00DETAILED DESCRIPTION

[0064] Figure 2 shows an example tuning device 200 for a drum 202, according to one aspect of the specification. The tuning device 200 is generally compatible with drums of the prior art which comprise a drum shell 204, drum head 208, counter hoop 212, and lugs 216, although other drums are contemplated, as described in greater detail herein.

[0065] The tuning device 200 improves the ease and accuracy of tuning drums by applying tension substantially uniformly around the counter hoop 212. The tension in the drum head can be adjusted by rotating a tuning tab 220 around the drum 202. Since the tuning device 200 is concentrically attachable to the drum head 208 and the drum shell 204, the tuning device 200 and the drum 202 share an axis A. The tuning device 200 generally comprises a tuning ring and a drum attachment mechanism which comprises at least one non-rotating annular ring. In the example shown in Figure 2, the drum attachment mechanism comprises a shell attachment means and a hoop attachment means, each comprising non-rotating annular rings.

[0066] Figure 3 shows an example tuning ring 300 according to one embodiment of the specification. The tuning ring 300 generally comprises an annular ring 302 which will be described with respect to the axis A and a circumference C. The tuning ring 300 includes a plurality of helical channels 304-1 , 304-2, 304-3, 304-4. (The plurality of helical channels 304-1 , 304-2, 304-3, 304-4 will be herein referred to collectively as “helical channels 304” or generically as “helical channels 304”. This terminology is used elsewhere herein.) The helical channels 304 may be circumferentially spaced around the tuning ring 300. In this example, each of the helical channels 304 extends from an inner surface of the annular ring 302 to an outer surface of the annular ring 302 and is sized and shaped to receive one of a plurality of fasteners, however the helical channels are not particularly limited to this configuration. In other examples, the helical channels comprise grooves or indentations on a surface of the annular ring 302 for guiding the fasteners. The helical channels 304 extend both axially (with respect to axis A) and circumferentially (with respect to circumference C) along the tuning ring 300. In the example shown in Figure 3, the helical channels 304 are right-handed helices, however in other examples, the helical channels 304 are left-handed helices. The accuracy ofDocket No. P13307PC00 tuning may be enhanced if each helical channel 304 has substantially or precisely the same slope. The slope and length of the helical channel 304 may be selected according to the type of drum. A longer, more gradual slope may be selected for a larger drum such as a timpani or bass drum, whereas a shorter, steeper slope may be selected for a smaller drum such as a tom tom or snare drum. A tuning device with a more gradual slope may provide greater control over the tension in the drum head, while a tuning device with a steeper slope may achieve rapid changes in the tension. The dimensions of the tuning ring 300 may be adjusted to accommodate the desired slope of the helical channel 304. In particular examples, the slope of the helical channels is non-linear. In even more particular examples, the helical channels are parabolic.

[0067] In embodiments where the helical channels are non-linear, the slope of the helical channel may be selected to create a non-linear relationship between rotation and applied pressure. In one non-limiting embodiment, the slope of the helical channel is engineered to be higher at initial low-tension ranges and lower at high-tension ranges. The steep slope in low-tension ranges facilitates the rapid seating of the drum head and elimination of slack, bringing the drum quickly into a playable pitch range. As tensile load increases and the drum head is tuned to a higher pitch, the slope of the helical channel decreases, becoming shallower. This reduction in slope can provide a greater mechanical advantage and increases tuning resolution precisely where it is most required. This affords the user significantly greater control over fine-tuning adjustments within optimal tuning ranges and, further, inherently reduces the tendency of the tuning device to slip or back off, even under high-tension applications.

[0068] Any suitable number of helical channels 304 may be distributed circumferentially around the tuning ring 300. In specific non-limiting examples, the tuning ring 300 includes between 2 and 20 helical channels . Due to the slope, the helical channels 304 may overlap axially. Generally, a greater number of helical channels will improve the accuracy of the tuning.

[0069] The tuning ring 300 may further include one or more attachment points for connecting the tuning ring 300 to the tuning tab 220. In the example shown in Figure 3, the attachment points comprise apertures 308-1 , 308-2 for receiving the tuning tabs 220,Docket No. P13307PC00 however the tuning ring 300 is not particularly limited. In other examples, the tuning tab 220 is integral to the tuning ring 300. In yet other examples, the tuning tab 220 is welded, adhered, or otherwise fixed to the tuning ring 300.

[0070] Figure 4 shows an example shell attachment means 400 for receiving the tuning ring 300. Generally, the shell attachment means 400 includes a non-rotating annular ring 402 which will be described with respect to the axis A and the circumference C. The shell attachment means 400 includes at least one circumferential slot 404-1 , 404- 2 for receiving the tuning tab 220. The shell attachment means may further include a plurality of axial slots 420-1 , 420-2, 420-3 for receiving fasteners. The shell attachment means 400 is integral with or attachable to the shell of the drum. In the example shown in Figure 4, the shell attachment means 400 includes a plurality of inwardly extending tabs 408-1 , 408-2, 408-3, 408-4 for attaching to the shell, with an aperture for receiving a fastener that is further received by the lug of the drum, however the shell attachment means is not particularly limited. In other examples, the shell attachment means includes a spacer suitable for attaching the tuning device to a lug that is spaced from the drum head. In further examples, the shell attachment means 400 is directly attachable to the shell of the drum, without a lug.

[0071] In this example, the annular ring 402 is sized and shaped to concentrically receive the tuning ring 300. The annular ring 402 may further include opposing edges 412, 416 configured to maintain the tuning ring 300 therebetween and impede axial movement of the tuning ring 300 relative to the annular ring 402. In the example shown in Figure 4, the opposing edges 412, 416 are crimped to form a track for maintaining the tuning ring 300 between the edges 412, 416. In other examples, the opposing edges 412, 416 include lugs or tabs for maintaining the tuning ring 300 therebetween. In further examples, the opposing edges 412, 416 include flanges for maintaining the tuning ring 300 therebetween.

[0072] Figure 5 shows an example hoop attachment means 500 which is attachable to the drum head 208. The hoop attachment means 500 generally comprises a nonrotating annular ring 502 that is concentrically attachable to the drum head 208. In some examples, the hoop attachment means 500 is attachable to the drum head 208 via theDocket No. P13307PC00 counter hoop 212, however in other examples, the hoop attachment means 500 replaces the counter hoop 212 or is integrated with the counter hoop 212. In the example shown, the hoop attachment means 500 includes a plurality of protrusions with apertures 508-1 , 508-2, 508-3, 508-4, 508-5 for receiving fasteners to attach to the counter hoop 212, however the hoop attachment means 500 is not particularly limited. In other examples, the hoop attachment means 500 is welded, adhered, or otherwise fixed to the counter hoop 212. In some examples, the hoop attachment means 500 includes a claw or clip extending from the annular ring 502. The hoop attachment means 500 may be adapted to the type and style of drum that the tuning device 200 is attachable to.

[0073] In this example, the hoop attachment means 500 is integral or attachable to the fasteners (not shown), however in other examples, the fasteners are part of the shell attachment means 400. In the example shown in Figure 5, the annular ring 502 includes a plurality of apertures 512 for receiving the fasteners. In other examples, the fasteners are adhered, welded, or otherwise fixed to the first non-rotating annular ring. The hoop attachment means 500 may further include a plurality of recessed portions 516 spaced between the apertures 512.

[0074] While the hoop attachment means 500 is described herein comprising the annular ring 502, other means of attaching the tuning device 200 to the drum head are contemplated. In some examples, the hoop attachment means 500 comprises a plurality of brackets, each bracket for connecting the counter hoop 212 to the tuning ring 300.

[0075] Figure 6 is an exploded view of the tuning device 200 including the tuning ring 300, the shell attachment means 400, and the hoop attachment means 500. In this example, the hoop attachment means 500 is concentrically attached to the counter hoop 212 which is disposed around the drum head 208, the shell attachment means 400 is concentrically disposed within the hoop attachment means 500 and attached to the drum shell 204, and the tuning ring 300 is concentrically disposed within the shell attachment means 400. In this configuration, the hoop attachment means 500 is the outermost ring while the rotatable tuning ring 300 is the innermost ring, which may protect the tuning device 200 from external interference. Furthermore, accessories such as microphones or drum triggers, may be clipped to the outer components of the tuning device 200, and inDocket No. P13307PC00 particular examples, accessories are attached to the hoop attachment means 500. In some examples, the outermost ring may include slots or other attachment means for accommodating accessories. In examples where the hoop attachment means 500 replaces the counter hoop, the hoop attachment means 500 is the innermost ring of the assembly, and the shell attachment means 400 is the outermost ring. Since the shell attachment means 400 does not rotate during operation, this configuration is also suitable for attaching drum paraphernalia to the tuning device 200.

[0076] The tuning device 200 comprises a rigid material. In specific non-limiting examples, the tuning device 200 comprises metal, metal alloy, carbon fiber, polymers, the like, or combinations thereof. In particular examples, the tuning ring 300, the shell attachment means 400, and the hoop attachment means 500 comprise a metal or metal alloy including but not limited to stainless steel, zinc-aluminum alloys, other zinc alloys, and brass. The rings 300, 400, 500 may be manufactured by any suitable process such as casting, molding, bending, angle and profile rolling, laser cutting, and combinations thereof. Laser cutting may be suitable for producing rings with tight tolerances and high precision.

[0077] Figure 7 shows an assembly 700 comprising the tuning ring 300, two tuning tabs 220-1 , 220-2, and the plurality of fasteners 708-1 , 708-2, 708-3, 708-4, 708-5. The tuning tab 220 extends from the tuning ring 300. Any suitable number of tuning tabs 220 may be attached to the tuning ring 300. In specific non-limiting examples, the number of tuning tabs 220 is between 1 and 5. The plurality of fasteners 708 are received by respective helical channels 304. The fasteners 708 may comprise any suitable hard material such as brass.

[0078] Figure 8 shows an assembly 800 comprising the shell attachment means 400 with the tuning ring 300. The tuning ring 300 is concentrically disposed within the shell attachment means 400 and rotatable therewithin. The tuning tabs 220 extend through the respective circumferential slots 404 in the shell attachment means 400. Similarly, the fasteners 708 extend through respective axial slots 420 in the shell attachment means 400. When the tuning tab 220 is pushed in a circumferential direction C, the tuning ring 300 rotates within the shell attachment means 400. As the tuning ring 300 rotates, theDocket No. P13307PC00 helical channel 304 urges the fastener 708 in an axial direction within the axial slot 420. In some examples, the tuning ring 300 is threadably received by the shell attachment means 400, to control the rotation of the tuning ring 300 within the shell attachment means 400. In some examples, the tuning device 200 includes an actuator to control rotation of the tuning ring 300 within the shell attachment means 400. The actuator may include a detent, spring, ratchet, lever arm, friction plate, the like, or a combination thereof. The actuator may be detachable from the tuning device 200. In a specific, non-limiting example, the actuator comprises a gear with saw teeth for engaging with saw teeth in the circumferential slot 404 and further engaging saw teeth in the tuning tab 220. The tuning device 200 may further include markings on an outer surface to assist the user in tuning the drum 202. The markings may be used to locate the tuning tab 220 relative to the circumferential slot 404, allowing the user to remember the appropriate tuning configuration for a drum. The tuning device 200 may further include a locking mechanism configured to impede rotation of the tuning ring 300 within the shell attachment means 400 when the locking mechanism is in a locked configuration and permit rotation of the tuning ring 300 when the locking mechanism is in an unlocked configuration. Generally, the locking mechanism is used to lock the tuning device 200 when the drum has been tuned, in order to preserve the tuning.

[0079] Figure 9 shows the tuning device 200 including the tuning ring 300 concentrically received within the shell attachment means 400 and further concentrically received within the hoop attachment means 500. As shown in this view, the recessed portions 516 of the hoop attachment means 500 are positioned to accommodate movement of the tuning tab 220 within the circumferential slot 404. The fasteners 708 extend from the hoop attachment means 500 through the axial slot 420 of the shell attachment means 400 and further through the helical channel 304 of the tuning ring 300. Thus, when the tuning ring 300 rotates and the helical channel urges the fastener 708 in an axial direction, the hoop attachment means 500 is urged in an axial direction. Axial movement of the hoop attachment means 500 controls the tension in the drum head 208. The fasteners 708 received within helical channels 304 are suitable for withstanding frictional forces applied by the tuning ring 300, and the high tensions typically required byDocket No. P13307PC00 some drums such as snare drums and timpani.

[0080] In the example shown in Figure 9, the helical channels 304 are right-handed helices. When the tuning tab 220 is moved in direction D1 , the fasteners 708 are urged upward, and the tension in the drum head 208 is reduced. When the tuning tab 220 is moved in an opposing direction D2, the fasteners 708 are urged downward, and the tension in the drum head 208 is increased. In other examples where the helical channels 304 are left-hand helices, moving the tuning tab in direction D1 or direction D2 has the opposite effect on the drum head tension.

[0081] For further clarity, Figure 10 shows a partial cross-sectional view 1000 of the tuning device 200 fitted on a drum 202. Figure 10 shows the hoop attachment means 500 concentrically disposed around the shell attachment means 400, and the tuning ring 300 concentrically disposed within the shell attachment means 400. The fastener 708 extends through the axial slot of the shell attachment means 400, and further extends through the helical channel of the tuning ring 300. When the tuning tab 220 is rotated in one direction, the fastener 708 is urged upward, and the hoop attachment means 500 applies less pressure to the counter hoop 212, which in turn reduces the tension in the drum head 208. When the tuning tab 220 is rotated in the opposition direction, the fastener 708 is urged downward, and the hoop attachment means 500 applies more pressure to the counter hoop 212, which in turn increases the tension in the drum head 208.

[0082] In the example shown in Figure 10, the fastener 708 is received by the helical channel 304 which comprises a slot extending from an outer edge to an inner surface of the tuning ring 300, however, the tuning ring 300 is not particularly limited. In other examples, the tuning ring 300 includes helical grooves or indentations on a surface of the tuning ring 300 for guiding the fastener 708.

[0083] As illustrated in the cross-sectional view of Figure 10, the concentrically disposed rings of the tuning device 200 are more compact than drum tuners of the prior art. Due to its low profile, the tuning device 200 is better able to fit under drum support devices and is more portable.

[0084] Different configurations of the elements disclosed above may be provided as aDocket No. P13307PC00 drum including a tuning device. For example, the tuning device 200 may be attached to the drum head via the hoop attachment means 500, and further attached to the shell via the shell attachment means 400. In some examples, the shell attachment means 400 is integral to the shell of the drum. In some examples, the hoop attachment means 500 replaces or is integrated with the counter hoop. (A hoop attachment means that is integral with the counter hoop may be referred to herein as “the hoop”.) In yet further examples, the tuning device 200 is integrated with a tom support.

[0085] Figure 11 shows a method of retrofitting a drum with a tuning device at 1100. Method 1100 will be explained by way of reference to the tuning device 200 and the drum 202, however method 1100 is not particularly limited.

[0086] At block 1104, the hoop attachment means 500 is concentrically attached to the drum head 208. As part of block 1104, tension rods may be removed from the drum 202. As a further part of block 1104, the hoop attachment means 500 may be attached to the counter hoop 212. In examples where the hoop attachment means 500 replaces the counter hoop 212, block 1104 includes removing the counter hoop 212 from the drum 204 and concentrically attaching hoop attachment means 500 to the drum head 208.

[0087] At block 1108, the shell attachment means 400 is concentrically attached to the drum shell 204. Concentrically attaching the shell attachment means 400 to the drum shell 204 may include attaching the shell attachment means 400 to lugs 216 disposed on the drum shell 204. If the lugs 216 are spaced from the drum head 208, block 1108 may further include attaching spacers to the lugs 216 and the shell attachment means 400 in order to attach the shell attachment means 400 to the drum shell 204.

[0088] At block 1112, the tuning ring 300 is concentrically disposed within the shell attachment means 400. In examples where opposing edges of the shell attachment means 400 are crimped, flanged, or tabbed to maintain the tuning ring 300 therewithin, block 1112 may be performed during manufacturing and the shell attachment means 400 is provided with the tuning ring 300 disposed therewithin. In these examples, block 1112 is omitted from the retrofitting method 1100, Block 1112 may include selecting the tuning ring according to the slope and length of the plurality of helical channels and further according to the type of drum.Docket No. P13307PC00

[0089] At block 1116, the plurality of fasteners 708 are attached to the hoop attachment means 500.

[0090] At block 1120, the tuning tab 220 is inserted through the circumferential slot of the shell attachment means 400 and attached to the tuning ring 300. In examples where the tuning tab 220 is permanently attached or integral to the tuning ring 300, block 1116 is performed during manufacturing, and the tuning ring 300 is provided with the tuning tab 220 attached.

[0091] At block 1124, the plurality of fasteners 708 are inserted through respective axial slots 420 of the shell attachment means 400 and further inserted into respective helical channels of the tuning ring 300.

[0092] Blocks 1104 to 1124 may be performed in any order, and in some examples, one or more of the blocks may be omitted from method 1100.

[0093] As will now be apparent, the tuning device 200 can be removed from a drum quickly and easily, when replacing the drum head. Unlike traditional drum tuners, which require unthreading of each tension rod from the lugs, the tuning device 200 can be removed without detaching the shell attachment means 400 from the lugs 216. Whenever the drum head 208 needs replacing, the fasteners 708 are pulled out of the hoop attachment means 500, and the hoop attachment means 500 is removed from the drum, allowing the drum head 208 to be exchanged.

[0094] Further configurations of the elements disclosed above may be provided as a kit for retrofitting a drum with a tuning device. For example, the kit may include the hoop attachment means 500, the shell attachment means 400, the tuning ring 300, the tuning tab 220, and the plurality of fasteners 708. Additionally, the kit may include instructions for retrofitting the drum with the tuning device 200. The instructions may include the steps of method 1100.

[0095] In view of the above, it will now be apparent that variant, combinations, and subsets of the foregoing embodiments are contemplated. For example, while the tuning device 200 is described above as being attached to the batter head of a drum, the tuning device 200 could be attached to either the batter head or the resonant head, and in someDocket No. P13307PC00 examples, respective tuning devices 200 could be attached to both the batter head and the resonant head.

[0096] Figure 12 shows another exemplary tuning device 1200 for a drum 1202, according to a further aspect of the specification. The tuning device 1200 is generally compatible with drums of the prior art that include a drum shell 1204, drum head 1208, counter hoop 1212, and lugs 1216, although other drums are contemplated, as previously described. Since the tuning device 1200 is concentrically attachable to the drum head 1208 and the drum shell 1204, the tuning device 1200 and the drum 1202 share an axis A.

[0097] The tuning device 1200 is a variation of the tuning device 200, and descriptions of tuning device 200 generally apply to tuning device 1200, unless otherwise indicated. In particular, Figure 12 shows an exemplary embodiment wherein the shell attachment means comprises a plurality of brackets 1218 and the fasteners. The hoop attachment means comprises the non-rotating annular ring. Since the tuning device 1200 includes only two concentric annular rings, it has a lower profile than the tuning device 200 of Figure 2. This can further improve compatibility with various drum accessories such as snare switches. Moreover, the tuning device 1200 is more compatible with wooden counter hoops. A further advantage of tuning device 1200 is that it includes fewer components which simplifies the manufacture, installation, and repair of the device.

[0098] Figure 13A is a top view of the tuning device 1200 of Figure 12.

[0099] Figure 13B is a side view of the tuning device 1200 of Figure 12. As shown in this view, the brackets 1218 can be offset from the lugs 1216, which improves compatibility of the tuning device 1200 with a wider range of drum types. The tuning device 1200 can be attached to drums where the lugs are close to the counter hoop.

[0100] Figure 14 is an isometric view of an example tuning ring 1400, for the tuning device of Figure 12. The tuning ring 1400 generally comprises a rotatable annular ring 1402 which will be described with respect to the axis A and a circumference C. The tuning ring 1400 includes a plurality of helical channels 1404 for receiving fasteners. As previously described, the slope of the helical channels may be non-linear, and in specificDocket No. P13307PC00 non-limiting examples, the slope of the helical channels is parabolic. The tuning ring 1400 further includes at least one tuning tab (not shown) or a means for attaching at least one tuning tab. In this example, the tuning ring 1400 includes a plurality of apertures 1408 for attaching tuning tabs.

[0101] Figure 15 is an isometric view of an example drum attachment mechanism 1500 for use with the tuning device of Figure 12. Drum attachment mechanism 1500 comprises at least one non-rotating annular ring. In contrast to the example shown in Figure 2 in which the drum attachment mechanism comprises two concentric rings, the drum attachment mechanism in Figure 15 comprises one annular ring. The drum attachment mechanism 1500 may further replace or be integrated with the counter hoop of the drum. By combining the functionality of two or more components shown previously in tuning ring 200, the drum attachment mechanism 1500 may reduce the bulkiness of the tuning device.

[0102] The drum attachment mechanism 1500 generally comprises a non-rotating annular ring 1502 with at least one circumferential slot 1504 for receiving a tuning tab. The non-rotating annular ring 1502 may be further shaped to accommodate fasteners. In the example shown in Figure 15, the non-rotating annular ring 1502 includes a plurality of spaced apart axial slots 1520 for accommodating fasteners. In contrast to tuning device 200, the non-rotating annular ring 1502 is not directly attachable to the shell of the drum.

[0103] The non-rotating annular ring 1502 is sized and shaped to concentrically receive the tuning ring 1400. The non-rotating annular ring 1502 includes opposing edges 1512, 1516 configured to maintain the tuning ring 1400 therebetween and impede axial movement of the tuning ring 1400 relative to the non-rotating annular ring 1502. The upper opposing edge 1516 is further configured to engage the collar of the drum head. Thus, when the tuning ring 1400 is tightened via the tuning tab, the non-rotating annular ring 1502 is urged towards the lugs, which applies pressure to the collar and increases tension on the drum head.

[0104] Figure 16 is an exploded view of the tuning device 1200 of Figure 12. The tuning device 1200 includes the tuning ring 1400, the non-rotating annular ring 1502, and a plurality of the brackets 1218. In this example, the tuning ring 1400 is concentricallyDocket No. P13307PC00 disposed within the non-rotating annular ring 1502, and the non-rotating annular ring 1502 is disposed over the drum head. The tuning ring 1400 is attached to the lugs of the drum via the brackets 1218.

[0105] Figure 17 is an exploded view of the bracket 1218 of Figure 12. The bracket 1218 includes a spacer 1704, a lug mount 1708, a lug bracket 1712, and a fastener 1716. The spacer 1704 is configured to pass through an aperture 1706 in the lug mount. The lug mount 1708 extends circumferentially around the drum and is attachable to the lugs of the drum. The lug bracket 1712 is attachable to the drum shell and further attachable to the lug mount 1708. The fastener 1716 is attachable to the spacer 1704 and configured to be received by the helical channels 1404 of the tuning ring 1400. The bracket 1218 is similarly compatible with the tuning device 200 of Figure 2.

[0106] It will now be apparent to a person of skill in the art that the present specification affords certain advantages over the prior art. In the tuning device described above, tension around the drum head is controlled by moving a tuning ring as opposed to individually adjusting a plurality of tension rods, as is done in conventional drums. This improvement allows for uniform control of the tension around the drum head, which ultimately enables faster and more accurate tuning. Additionally, the tuning device does not require a detachable drum key, which must be sequentially attached to each tension rod at the time of tuning and is liable to be misplaced. Another advantage is that the tuning device prevents the drum rim and drum head from rotating during tensioning, and can be rapidly removed from the drum head.

[0107] The incorporation of helical channels having a non-linear or parabolic slope provides a smoother, more progressive transfer of force to the drum head, allowing finer adjustment and more uniform tension across the head surface. Conventional drum tuning systems employing traditional threaded tension rods are known to have significant limitations. Said tension rods possess a constant, linear thread pitch, which establishes a fixed relationship between the rotational input and the resultant tensile force applied to the drum head. As tension on the drum head is increased, the torque required to make adjustments rises proportionally, making fine-tuning at higher pitches more difficult and imprecise. Furthermore, this linear threaded design, when subjected to the vibrationsDocket No. P13307PC00 inherent in playing, exhibits a pronounced tendency for the tension rods to loosen or "back off," thereby causing the instrument to de-tune. The prevalence of this deficiency is evidenced by the existence of various aftermarket products, such as nylon lug locks, which are designed solely to introduce friction and mitigate said loosening. The presently disclosed tuning device 200, in contrast, utilizes helical channels that can feature nonlinear, variable slopes, which overcomes the limitations of the prior art. The profile of said helical channels can be precisely tailored to create a non-linear relationship between rotation and applied pressure

[0108] Furthermore, the outermost ring of the tuning device does not rotate during operation and is therefore suitable for attaching microphones, drum triggers, and other hardware, and not subjecting them to rotational repositioning during tuning changes. Moreover, the tuning device can be quickly and easily detached when replacing the drum head. It is generally compatible with commercially available drums, without modification to the shell or lugs. As well, the compact profile of the concentrically disposed rings is portable and user-friendly. Also, the tuning device reduces unwanted rattling during a drum performance.

[0109] The many features and advantages of the invention are apparent from the detailed specification and, thus, it is intended by the appended claims to cover all such features and advantages of the specification that fall within the true spirit and scope of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation illustrated and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

Claims

Docket No. P13307PC00CLAIMS1 . A tuning device for a drum comprising: a drum attachment mechanism including: a shell attachment means for fixed attachment to a shell of the drum; a hoop attachment means for engaging a head of the drum and applying tension to the drum head; at least one non-rotating annular ring with a circumferential slot; and a plurality of fasteners comprising the shell attachment means or the hoop attachment means; a tuning ring concentrically disposed between two opposing edges of the nonrotating annular ring and rotatable therewithin, the tuning ring including a plurality of helical channels for accommodating the plurality of fasteners; and a tuning tab outwardly extending from the tuning ring and through the circumferential slot of the non-rotating annular ring, for controlling rotation of the tuning ring; wherein rotation of the tuning ring urges the fasteners axially, thereby urging the non-rotating annular ring axially and increasing or decreasing tension on the drum head.

2. The tuning device according to claim 1 wherein the hoop attachment means is integral with a counter hoop of the drum.

3. The tuning device according to claim 2 wherein the hoop attachment means comprises the non-rotating annular ring.

4. The tuning device according to claim 1 wherein the shell attachment means comprises the non-rotating annular ring.

5. The tuning device according to claim 4 wherein the shell attachment means comprises a plurality of brackets configured to attach the non-rotating annular ring to lugs disposed on the drum shell.

6. The tuning device according to any one of claims 5 wherein opposing edges of theDocket No. P13307PC00 non-rotating annular ring are crimped, flanged, or tabbed to maintain the tuning ring therewithin and impede axial movement of the tuning ring.

7. The tuning device according to any one of claims 1 wherein the helical channels have a parabolic slope.

8. The tuning device according to any one of claims 1 wherein the tuning tab includes an actuator for controlling movement of the tuning tab within the circumferential slot.

9. The tuning device according to any one of claims 8 wherein the tuning tab includes a locking mechanism configured to impede rotation of the tuning ring when the locking mechanism is in a locked configuration and permit rotation of the tuning ring when the locking mechanism is in an unlocked configuration.

10. A drum including: a shell including an open head; a drum head covering the open head; a drum attachment mechanism including a shell attachment means fixed to the shell and a hoop attachment means engaging the drum head; at least one non-rotating annular ring with a circumferential slot; a plurality of fasteners comprising the shell attachment means or the hoop attachment means; a tuning ring concentrically disposed between two opposing edges of the nonrotating annular ring and rotatable therewithin, the tuning ring including a plurality of helical channels for accommodating the plurality of fasteners; and a tuning tab outwardly extending from the tuning ring and through the circumferential slot of the non-rotating annular ring for controlling rotation of the tuning ring; wherein rotation of the tuning ring urges the fasteners axially, thereby urging the non-rotating annular ring axially and increasing or decreasing tension on the drum head.Docket No. P13307PC0011. The drum according to claim 10 wherein the hoop attachment means is integral with a counter hoop of the drum.

12. The drum according to claim 11 wherein the hoop attachment means comprises the non-rotating annular ring.

13. The drum according to claim 10 wherein the shell attachment means comprises the non-rotating annular ring.

14. The drum according to any one of claims 13 wherein the shell attachment means comprises a plurality of brackets configured to attach the non-rotating annular ring to lugs disposed on the drum shell.

15. The drum according to any one of claims 14 wherein opposing edges of the nonrotating annular ring are crimped, flanged, or tabbed to maintain the tuning ring therewithin and impede axial movement of the tuning ring.

16. The drum according to any one of claims 10 wherein the helical channels have a parabolic slope.

17. The drum according to any one of claims 10 wherein the tuning tab includes an actuator for controlling movement of the tuning tab within the circumferential slot.

18. The drum according to any one of claims 32 to 38 wherein the tuning tab includes a locking mechanism configured to impede rotation of the tuning ring when the locking mechanism is in a locked configuration and permit rotation of the tuning ring when the locking mechanism is in an unlocked configuration.

19. A kit for retrofitting a drum, the kit including: a drum attachment mechanism including a shell attachment means fixedly attachable to a shell of the drum and a hoop attachment means engageable with a drum head of the drum; at least one non-rotating annular ring including a circumferential slot; a tuning ring concentrically disposable between two opposing edges of the non-rotating annular ring and rotatable therewithin, the tuning ring including a plurality of helical channels for accommodating a plurality of fasteners;Docket No. P13307PC00 a tuning tab configured to extend outwardly from the tuning ring through the circumferential slot of the non-rotating annular ring for controlling rotation of the tuning ring; and a plurality of fasteners configured to urge the non-rotating annular ring axially when the tuning ring is rotated, thereby adjusting tension on the drum head.

20. The kit according to claim 19, further comprising instructions for retrofitting the drum, the instructions including: attaching the shell attachment means to the drum shell; engaging the hoop attachment means with the drum head; disposing the tuning ring between the opposing edges of the non-rotating annular ring; inserting the tuning tab through the circumferential slot and attaching it to the tuning ring; inserting the plurality of fasteners through the helical channels; and rotating the tuning ring to adjust drum head tension.

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