Auto-centering pump handle

Abstract

A pump is provided with an auto-centering pump handle. The pump includes a cylinder, a shaft having a first portion and a second portion, the first portion being disposed within the cylinder and the second portion extending from the cylinder, the shaft being rotationally movable within the cylinder. A handle is secured to the second portion and is movable therewith. A centering mechanism rotates the shaft with respect to the cylinder. The handle can include a mount for an air inflation chuck.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] n / aFIELD

[0002] The present technology relates to hand-operated bicycle pumps.BACKGROUND

[0003] Hand-operated bicycle pumps have been essential tools since their inception in the late 19th century, coinciding with the introduction of inflatable tires. Despite the passage of nearly 140 years and numerous technological advancements in other fields, the fundamental design of these pumps has remained remarkably consistent. Traditional bicycle pumps consist of a metal cylinder housing a reciprocating rod or shaft equipped with a sealing element or piston inside the cylinder. The manual movement of the shaft and sealing element pressurizes air within the cylinder. During the downward stroke, compressed air is forced out of the cylinder through an inflation tube and into the tire, while the upward stroke draws fresh air into the cylinder, enabling continuous operation.

[0004] Modern hand-operated pumps largely adhere to this classic design and operating principle. When air within the cylinder is compressed by the downward motion of the handle, it is pushed through the inflation tube and into the tire via a valve that opens under air pressure. On the upward stroke, the valve automatically closes to prevent air from escaping the tire, and new air is drawn into the cylinder to prepare for the next compression cycle. Some contemporary pumps are equipped with pressure gauges that display the tire's air pressure, allowing users to monitor and achieve the desired pressure accurately before disconnecting the pump.

[0005] To facilitate efficient pumping action, an elongated handle is attached to the top end of the shaft. This handle provides a comfortable grip for the user to generate the necessary force for both the upward and downward strokes. However, when not in use, the handle and shaft are typically free to rotate relative to the cylinder. This unrestricted rotation can lead to misalignment or awkward positioning of the handle, which may cause inconvenience during storage or initial use. The handle may not return to a consistent or ergonomic position after each pumping session, potentially leading to user frustration or decreased efficiency.

[0006] Additionally, traditional inflation tubes and valves are generally lightweight and simplistic in design. Pumps often feature basic clips or holders attached to the cylinder to secure the inflation tube when not in use. While these clips are sufficient for holding light components, they are inadequate for securing larger or heavier inflation chucks. Modern inflation chucks have evolved to become more complex and robust, sometimes incorporating advanced features such as pressure release mechanisms, dual-valve compatibility, or locking systems to accommodate a wider range of inflation needs beyond standard bicycle tires, including automotive tires and various inflatable equipment.

[0007] These larger and heavier inflation chucks are more susceptible to damage if not properly secured. If left to dangle freely or if inadequately clipped to the pump, they can swing and strike hard surfaces, leading to potential damage or reduced lifespan of the component. The inability of existing clips to reliably secure these heavier chucks poses a risk not only to the equipment but also to user safety and convenience.

[0008] Therefore, there is a need for an improved hand-operated pump design that addresses these shortcomings. Specifically, a pump that incorporates an auto-centering mechanism for the handle would ensure that the handle returns to a predetermined, ergonomic position after each use, enhancing user comfort and ease of storage. Furthermore, integrating a secure mount for the inflation chuck directly onto the handle would provide a reliable and convenient way to store heavier and more complex chucks when not in use. Such enhancements would protect the inflation chuck from damage, improve the overall functionality of the pump, and expand its utility across a broader range of inflation applications.SUMMARY

[0009] A pump is provided with an auto-centering pump handle. In an embodiment the pump includes a cylinder, a shaft having a first portion and a second portion, the first portion being disposed within the cylinder and the second portion extending from the cylinder, the shaft being rotationally movable within the cylinder. A handle is secured to the second portion and is movable therewith. A centering mechanism rotates the shaft with respect to the cylinder. The handle can include a mount for an air inflation chuck.

[0010] The centering mechanism includes a rotation element that rotates the shaft and handle when the handle and shaft move downward, as well as a first element having an angled face and a second element having an angled face. Movement of the second element with respect to the first element causes the second element to rotate with respect to the cylinder when the angled faces are in contact and urged together.

[0011] The first element can be integral with or secured to the cylinder and the second element can be integral with or secured to one of the handle and the shaft.

[0012] Pressure applied to the handle causes the second element to move toward the first element. Additionally, or alternatively, gravitational force causes the second element to move toward the first element. Full downward translation of the shaft causes the handle to have a predetermined alignment with a predetermined point on the cylinder.

[0013] The details of one or more aspects of the disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the techniques described in this disclosure will be apparent from the description and drawings, and from the claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:

[0015] FIG. 1 illustrates a pump in accordance with the invention;

[0016] FIG. 2 is a view of the interior of the pump of FIG. 1, with a pump handle in an extended position;

[0017] FIG. 3 illustrates the pump of FIG. 1 in a first position showing elements of a centering mechanism in a disengaged state;

[0018] FIG. 4 illustrates the pump of FIG. 1 in a second position showing elements of the centering mechanism in an engaged state; and

[0019] FIG. 5 is a top view of the pump of FIG. 1.DETAILED DESCRIPTION

[0020] The present invention relates to a manual pump, more particularly to a pump equipped with an auto-centering mechanism for the pump handle. This auto-centering feature enhances usability and storage convenience by ensuring that the handle returns to a predetermined, centered position after use. Additionally, the pump includes a mount for an air inflation chuck on the handle, making it a versatile tool for inflating various objects such as tires, sports equipment, and inflatable devices.

[0021] Referring to FIGS. 1 and 2, a pump comprises a cylinder 10 defining an internal chamber 12 and a shaft 14 configured for reciprocal movement within the cylinder. The shaft 14 includes a first portion 16 disposed within the cylinder 10. A second portion 18 extends outwardly from the cylinder 10. The shaft 14 is rotationally movable within the cylinder, allowing it to rotate about its longitudinal axis. A handle 20 is secured to the second portion 18 of the shaft 14 and moves in unison with the shaft during pump operation.

[0022] A key aspect of the invention is an auto-centering mechanism 22, which functions to rotate the shaft 14 and handle 20 relative to the cylinder 10, returning the handle to a centered or predetermined alignment position after use. This mechanism enhances user convenience by ensuring consistent handle positioning.

[0023] In one embodiment, the centering mechanism is gravity-operated, utilizing a rotational element that engages when the handle and shaft move downward under gravitational force or applied pressure. The centering mechanism includes a first element 26 affixed to the cylinder 10, featuring an angled or helical face. A second element 24 attached to the shaft or handle, having a complementary angled face. These angled faces interact during the downward movement of the shaft. As the elements are urged together, the interaction induces rotation of the second element, and consequently the shaft and handle, aligning them to a predefined position relative to the cylinder as shown in FIG. 3 and FIG. 4.

[0024] The centering mechanism 22 can include a first element having a cam surface or a spiral groove formed on the interior of the cylinder and a second element such as a follower or projection extending from the shaft or handle. As the shaft reaches the lower limit of its travel within the cylinder, the engagement between the first and second elements causes the handle to rotate to the desired centered position. Alternatively, gravitational force alone may activate the centering mechanism without additional applied pressure.

[0025] The handle includes an integrated mount 27 for an air inflation chuck 28, allowing for convenient attachment and secure storage when not in use. This mount enhances functionality by protecting the chuck from damage due to dropping or mishandling and ensuring readiness for subsequent use by keeping the chuck easily accessible.

[0026] The air inflation chuck 28 can be removably secured to the mount, which may feature clips, clamps, magnetic holders, or threaded connectors to accommodate various chuck designs.

[0027] The pump further includes an air inflation tube 30 in fluid communication with the cylinder 10 and the air inflation chuck 28. This allows pressurized air generated within the cylinder to be delivered efficiently to the chuck, facilitating the inflation of objects such as bicycle tires, sports balls, and inflatable toys. A base 32 provides stable support for the cylinder. A pressure gauge 34 can be provided as is known, and a handle 36 can be provided to assist in positioning and carrying the pump.

[0028] In a comprehensive embodiment, the pump integrates all the aforementioned features synergistical: the shaft with its first portion inside the cylinder and second portion extending outward; the handle with chuck mount, wherein the handle is secured to the second portion of the shaft and equipped with a mount for the air inflation chuck; the air inflation tube connecting the cylinder to the chuck for efficient air transfer; and the auto-centering mechanism including the first and second elements with angled faces.

[0029] Operation of the pump is as follows. During a downward stroke, a user applies pressure to the handle. The second element moves toward the first element. Engagement of the angled faces induces rotation, aligning the handle. The weight of the handle and shaft may be sufficient to activate the centering mechanism as they descend under the force of gravity. Full downward translation of the shaft brings the handle into alignment with a predetermined reference point on the cylinder. This ensures consistent positioning after each use, enhancing user convenience and reducing time.

[0030] The combination of an auto-centering handle mechanism and an integrated mount for the air inflation chuck provides a highly functional and user-friendly pump. Key benefits include: enhanced usability wherein handle misalignment is eliminated, making the pump easier and more comfortable to use; convenient storage, wherein consistent handle positioning facilitates compact storage; protection of components, wherein the secure mount protects the inflation chuck from damage; versatility, as it is suitable for various applications requiring pressurized air; and efficiency due to the integrated structure. Thus, this pump design addresses the shortcomings of traditional hand-operated pumps by improving both the functionality and the user experience, making it a valuable tool for a wide range of inflation needs.

[0031] A variety of modifications and variations of the present invention are possible in light of the above disclosure. It is therefore understood that, within the scope of the appended claims, the present invention may be practiced otherwise than as specifically described hereinabove.

Examples

Embodiment Construction

[0020]The present invention relates to a manual pump, more particularly to a pump equipped with an auto-centering mechanism for the pump handle. This auto-centering feature enhances usability and storage convenience by ensuring that the handle returns to a predetermined, centered position after use. Additionally, the pump includes a mount for an air inflation chuck on the handle, making it a versatile tool for inflating various objects such as tires, sports equipment, and inflatable devices.

[0021]Referring to FIGS. 1 and 2, a pump comprises a cylinder 10 defining an internal chamber 12 and a shaft 14 configured for reciprocal movement within the cylinder. The shaft 14 includes a first portion 16 disposed within the cylinder 10. A second portion 18 extends outwardly from the cylinder 10. The shaft 14 is rotationally movable within the cylinder, allowing it to rotate about its longitudinal axis. A handle 20 is secured to the second portion 18 of the shaft 14 and moves in unison with t...

CROSS-REFERENCE TO RELATED APPLICATION

[0001] n / aFIELD

[0002] The present technology relates to hand-operated bicycle pumps.BACKGROUND

[0003] Hand-operated bicycle pumps have been essential tools since their inception in the late 19th century, coinciding with the introduction of inflatable tires. Despite the passage of nearly 140 years and numerous technological advancements in other fields, the fundamental design of these pumps has remained remarkably consistent. Traditional bicycle pumps consist of a metal cylinder housing a reciprocating rod or shaft equipped with a sealing element or piston inside the cylinder. The manual movement of the shaft and sealing element pressurizes air within the cylinder. During the downward stroke, compressed air is forced out of the cylinder through an inflation tube and into the tire, while the upward stroke draws fresh air into the cylinder, enabling continuous operation.

[0004] Modern hand-operated pumps largely adhere to this classic design and operating principle. When air within the cylinder is compressed by the downward motion of the handle, it is pushed through the inflation tube and into the tire via a valve that opens under air pressure. On the upward stroke, the valve automatically closes to prevent air from escaping the tire, and new air is drawn into the cylinder to prepare for the next compression cycle. Some contemporary pumps are equipped with pressure gauges that display the tire's air pressure, allowing users to monitor and achieve the desired pressure accurately before disconnecting the pump.

[0005] To facilitate efficient pumping action, an elongated handle is attached to the top end of the shaft. This handle provides a comfortable grip for the user to generate the necessary force for both the upward and downward strokes. However, when not in use, the handle and shaft are typically free to rotate relative to the cylinder. This unrestricted rotation can lead to misalignment or awkward positioning of the handle, which may cause inconvenience during storage or initial use. The handle may not return to a consistent or ergonomic position after each pumping session, potentially leading to user frustration or decreased efficiency.

[0006] Additionally, traditional inflation tubes and valves are generally lightweight and simplistic in design. Pumps often feature basic clips or holders attached to the cylinder to secure the inflation tube when not in use. While these clips are sufficient for holding light components, they are inadequate for securing larger or heavier inflation chucks. Modern inflation chucks have evolved to become more complex and robust, sometimes incorporating advanced features such as pressure release mechanisms, dual-valve compatibility, or locking systems to accommodate a wider range of inflation needs beyond standard bicycle tires, including automotive tires and various inflatable equipment.

[0007] These larger and heavier inflation chucks are more susceptible to damage if not properly secured. If left to dangle freely or if inadequately clipped to the pump, they can swing and strike hard surfaces, leading to potential damage or reduced lifespan of the component. The inability of existing clips to reliably secure these heavier chucks poses a risk not only to the equipment but also to user safety and convenience.

[0008] Therefore, there is a need for an improved hand-operated pump design that addresses these shortcomings. Specifically, a pump that incorporates an auto-centering mechanism for the handle would ensure that the handle returns to a predetermined, ergonomic position after each use, enhancing user comfort and ease of storage. Furthermore, integrating a secure mount for the inflation chuck directly onto the handle would provide a reliable and convenient way to store heavier and more complex chucks when not in use. Such enhancements would protect the inflation chuck from damage, improve the overall functionality of the pump, and expand its utility across a broader range of inflation applications.SUMMARY

[0009] A pump is provided with an auto-centering pump handle. In an embodiment the pump includes a cylinder, a shaft having a first portion and a second portion, the first portion being disposed within the cylinder and the second portion extending from the cylinder, the shaft being rotationally movable within the cylinder. A handle is secured to the second portion and is movable therewith. A centering mechanism rotates the shaft with respect to the cylinder. The handle can include a mount for an air inflation chuck.

[0010] The centering mechanism includes a rotation element that rotates the shaft and handle when the handle and shaft move downward, as well as a first element having an angled face and a second element having an angled face. Movement of the second element with respect to the first element causes the second element to rotate with respect to the cylinder when the angled faces are in contact and urged together.

[0011] The first element can be integral with or secured to the cylinder and the second element can be integral with or secured to one of the handle and the shaft.

[0012] Pressure applied to the handle causes the second element to move toward the first element. Additionally, or alternatively, gravitational force causes the second element to move toward the first element. Full downward translation of the shaft causes the handle to have a predetermined alignment with a predetermined point on the cylinder.

[0013] The details of one or more aspects of the disclosure are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the techniques described in this disclosure will be apparent from the description and drawings, and from the claims.BRIEF DESCRIPTION OF THE DRAWINGS

[0014] A more complete understanding of the present invention, and the attendant advantages and features thereof, will be more readily understood by reference to the following detailed description when considered in conjunction with the accompanying drawings wherein:

[0015] FIG. 1 illustrates a pump in accordance with the invention;

[0016] FIG. 2 is a view of the interior of the pump of FIG. 1, with a pump handle in an extended position;

[0017] FIG. 3 illustrates the pump of FIG. 1 in a first position showing elements of a centering mechanism in a disengaged state;

[0018] FIG. 4 illustrates the pump of FIG. 1 in a second position showing elements of the centering mechanism in an engaged state; and

[0019] FIG. 5 is a top view of the pump of FIG. 1.DETAILED DESCRIPTION

[0020] The present invention relates to a manual pump, more particularly to a pump equipped with an auto-centering mechanism for the pump handle. This auto-centering feature enhances usability and storage convenience by ensuring that the handle returns to a predetermined, centered position after use. Additionally, the pump includes a mount for an air inflation chuck on the handle, making it a versatile tool for inflating various objects such as tires, sports equipment, and inflatable devices.

[0021] Referring to FIGS. 1 and 2, a pump comprises a cylinder 10 defining an internal chamber 12 and a shaft 14 configured for reciprocal movement within the cylinder. The shaft 14 includes a first portion 16 disposed within the cylinder 10. A second portion 18 extends outwardly from the cylinder 10. The shaft 14 is rotationally movable within the cylinder, allowing it to rotate about its longitudinal axis. A handle 20 is secured to the second portion 18 of the shaft 14 and moves in unison with the shaft during pump operation.

[0022] A key aspect of the invention is an auto-centering mechanism 22, which functions to rotate the shaft 14 and handle 20 relative to the cylinder 10, returning the handle to a centered or predetermined alignment position after use. This mechanism enhances user convenience by ensuring consistent handle positioning.

[0023] In one embodiment, the centering mechanism is gravity-operated, utilizing a rotational element that engages when the handle and shaft move downward under gravitational force or applied pressure. The centering mechanism includes a first element 26 affixed to the cylinder 10, featuring an angled or helical face. A second element 24 attached to the shaft or handle, having a complementary angled face. These angled faces interact during the downward movement of the shaft. As the elements are urged together, the interaction induces rotation of the second element, and consequently the shaft and handle, aligning them to a predefined position relative to the cylinder as shown in FIG. 3 and FIG. 4.

[0024] The centering mechanism 22 can include a first element having a cam surface or a spiral groove formed on the interior of the cylinder and a second element such as a follower or projection extending from the shaft or handle. As the shaft reaches the lower limit of its travel within the cylinder, the engagement between the first and second elements causes the handle to rotate to the desired centered position. Alternatively, gravitational force alone may activate the centering mechanism without additional applied pressure.

[0025] The handle includes an integrated mount 27 for an air inflation chuck 28, allowing for convenient attachment and secure storage when not in use. This mount enhances functionality by protecting the chuck from damage due to dropping or mishandling and ensuring readiness for subsequent use by keeping the chuck easily accessible.

[0026] The air inflation chuck 28 can be removably secured to the mount, which may feature clips, clamps, magnetic holders, or threaded connectors to accommodate various chuck designs.

[0027] The pump further includes an air inflation tube 30 in fluid communication with the cylinder 10 and the air inflation chuck 28. This allows pressurized air generated within the cylinder to be delivered efficiently to the chuck, facilitating the inflation of objects such as bicycle tires, sports balls, and inflatable toys. A base 32 provides stable support for the cylinder. A pressure gauge 34 can be provided as is known, and a handle 36 can be provided to assist in positioning and carrying the pump.

[0028] In a comprehensive embodiment, the pump integrates all the aforementioned features synergistical: the shaft with its first portion inside the cylinder and second portion extending outward; the handle with chuck mount, wherein the handle is secured to the second portion of the shaft and equipped with a mount for the air inflation chuck; the air inflation tube connecting the cylinder to the chuck for efficient air transfer; and the auto-centering mechanism including the first and second elements with angled faces.

[0029] Operation of the pump is as follows. During a downward stroke, a user applies pressure to the handle. The second element moves toward the first element. Engagement of the angled faces induces rotation, aligning the handle. The weight of the handle and shaft may be sufficient to activate the centering mechanism as they descend under the force of gravity. Full downward translation of the shaft brings the handle into alignment with a predetermined reference point on the cylinder. This ensures consistent positioning after each use, enhancing user convenience and reducing time.

[0030] The combination of an auto-centering handle mechanism and an integrated mount for the air inflation chuck provides a highly functional and user-friendly pump. Key benefits include: enhanced usability wherein handle misalignment is eliminated, making the pump easier and more comfortable to use; convenient storage, wherein consistent handle positioning facilitates compact storage; protection of components, wherein the secure mount protects the inflation chuck from damage; versatility, as it is suitable for various applications requiring pressurized air; and efficiency due to the integrated structure. Thus, this pump design addresses the shortcomings of traditional hand-operated pumps by improving both the functionality and the user experience, making it a valuable tool for a wide range of inflation needs.

[0031] A variety of modifications and variations of the present invention are possible in light of the above disclosure. It is therefore understood that, within the scope of the appended claims, the present invention may be practiced otherwise than as specifically described hereinabove.

Examples

Embodiment Construction

[0020]The present invention relates to a manual pump, more particularly to a pump equipped with an auto-centering mechanism for the pump handle. This auto-centering feature enhances usability and storage convenience by ensuring that the handle returns to a predetermined, centered position after use. Additionally, the pump includes a mount for an air inflation chuck on the handle, making it a versatile tool for inflating various objects such as tires, sports equipment, and inflatable devices.

[0021]Referring to FIGS. 1 and 2, a pump comprises a cylinder 10 defining an internal chamber 12 and a shaft 14 configured for reciprocal movement within the cylinder. The shaft 14 includes a first portion 16 disposed within the cylinder 10. A second portion 18 extends outwardly from the cylinder 10. The shaft 14 is rotationally movable within the cylinder, allowing it to rotate about its longitudinal axis. A handle 20 is secured to the second portion 18 of the shaft 14 and moves in unison with t...

Claims

1. A pump comprising:a handle; anda centering mechanism configured to automatically return the handle to a centered position after use.

2. The pump of claim 1, wherein the handle includes a mount for securing an air inflation chuck.

3. A pump comprising:a cylinder;a shaft having a first portion disposed within the cylinder and a second portion extending outside the cylinder, the shaft being rotatable within the cylinder;a handle attached to the second portion of the shaft and movable therewith; anda centering mechanism configured to rotate the shaft relative to the cylinder, thereby returning the handle to a predefined centered position.

4. The pump of claim 3, wherein the handle includes a mount for securing an air inflation chuck.

5. The pump of claim 3, wherein the centering mechanism is actuated by gravitational force.

6. The pump of claim 5, wherein the centering mechanism is actuated by the gravitational force.

7. The pump of claim 3, wherein the centering mechanism comprises:a first element having an angled surface fixed to the cylinder; anda second element having a complementary angled surface secured to the shaft or the handle;wherein interaction between the angled surfaces during relative movement causes rotation of the shaft and handle with respect to the cylinder.

8. The pump of claim 7, wherein pressure applied to the handle urges the second element toward the first element, causing rotation of the handle and shaft.

9. The pump of claim 7, wherein gravitational force urges the second element toward the first element, causing rotation of the handle and shaft.

10. The pump of claim 8, wherein full downward movement of the shaft aligns the handle with a predetermined reference point on the cylinder.

11. The pump of claim 9, wherein full downward movement of the shaft aligns the handle with a predetermined reference point on the cylinder.

12. The pump of claim 4, further comprising an the air inflation chuck removably attached to the mount on the handle.

13. The pump of claim 124, further comprising an air inflation tube in fluid communication with the cylinder and the air inflation chuck.

14. A pump comprising:a cylinder;a shaft having a first portion disposed within the cylinder and a second portion extending outside the cylinder, the shaft being rotatable within the cylinder;a handle attached to the second portion of the shaft and movable therewith;an air inflation chuck;an air inflation tube in fluid communication with the cylinder and the air inflation chuck;a mount on the handle for securing the air inflation chuck; anda centering mechanism configured to rotate the shaft relative to the cylinder;wherein the centering mechanism comprises:a first element having an angled surface fixed to the cylinder; anda second element having a complementary angled surface secured to the shaft or the handle;wherein movement of the second element with respect to the first element causes rotation of the shaft and handle, returning the handle to a predefined centered position.

15. The pump of claim 14, wherein the centering mechanism is activated by pressure applied to the handle.

16. The pump of claim 14, wherein the centering mechanism is activated by gravitational force acting on the handle and shaft.

17. The pump of claim 15, wherein full downward movement of the shaft aligns the handle with a predetermined reference point on the cylinder.

18. The pump of claim 16, wherein full downward movement of the shaft aligns the handle with a predetermined reference point on the cylinder.

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