111 results about "Spacing tooth" patented technology

A sprocket assembly for a bicycle is provides with at least one large sprocket and at least one small sprocket. The large sprocket is modified to allow a bicycle chain to move smoothly from the large sprocket to the small sprocket during an up shift operation. The large sprocket basically has a sprocket body with a first axial side and a second axial side, and a plurality of circumferentially spaced teeth extending radially and outwardly from an outer periphery of the sprocket body. The teeth of the sprocket include a plurality of up shift teeth. The up shift teeth has at least a first up shift tooth, a second up shift tooth located adjacent the first up shift tooth and a third up shift tooth located adjacent the second up shift tooth. The first, second and third up shift teeth are dimensioned to maintain alignment of a bicycle chain to prevent an up shift of the chain when an outer link plate of the bicycle chain meshes with the second up shift tooth, and to permit an up shift the bicycle chain when an inner link plate meshes with the second up shift tooth along a first up shift path.

A cutting head for rotary trimmers in which at least one, and preferably two relatively short fixed lengths of flexible cutting line are inserted into opposed channels in the head and are secured in place by a pair of spring biased toothed cams. Each of the cams is pivotally mounted on a post within the housing adjacent one of the channels and defines a curvilinear camming surface having a plurality of uniformly spaced teeth thereon that project into the channels at increasing angles of inclination from the outermost tooth to the innermost tooth for engaging the line. A pair of torsion springs bias the cams to pivot on their mounting teeth such that the backsides of the teeth are continually urged toward the openings to the channels thereby allowing line to be inserted inwardly into the head past the toothed cams but retained by the cams against any outwardly directed forces acting on the line. The cams are symmetrically balanced about their axes of rotation so as to be unaffected by centrifugal force acting thereon during use.

A multi-position latch mechanism is provided for a subsurface aircraft ground servicing chamber formed by a pit having an upright interior wall and a pit lid seat disposed atop the pit. A pit lid is provided which, when closed, rests upon the pit lid seat. The latch mechanism includes a catch member depending from the pit lid adjacent the upright wall of the pit. The catch member is mounted to the pit lid for rotatable movement relative thereto. A latching member is mounted on the upright interior pit wall and has a plurality of vertically spaced teeth that face the catch member. The catch member has a hook facing the latching member. The hook is alternatively engageable with each of the teeth, depending upon the extent to which debris on the pit lid seat holds the pit lid off of its pit lid seat.

A locking device with changeable combination of numerals includes an enclosure having an insertion section and an axial row of windows; a locking unit arranged in the enclosure and including a rod having axially spaced teeth, a push member connected to one end of the rod, a hooking member connected to the push member with two hooking arms extended into two holes on the insertion section, an elastic member located between the push member and the insertion section, sleeves mounted on the rod, rotating discs fitted on the sleeves corresponding to the windows, and a push disc mounted to another end of the rod; and a push button on the enclosure to interfere with the push member. By pushing the push disc, the rotating discs can be turned to change the combination of numerals set for the locking unit.

An electric flossing apparatus comprising a flossing head which is detachably connected to a handle containing a reciprocating drive unit, a non-powered second handle to allow for the increased controllability of two-handed powered flossing and a disposable floss assembly that can be easily be attached to or released from the flossing head and handle. The floss is releasably attached to the flossing head in a manner that allows reciprocating motion to be imparted along the length of the floss no matter which direction that the floss exits the end of the flossing head or the shape of the path it takes. By using both hands for flossing the floss may be pulled straight and tensioned to facilitate insertion between tightly spaced teeth and then wrapped around a tooth to facilitate cleaning of the front, sides, and back of each tooth above, near, or just below the gum line. The reciprocating motion is imparted to the floss whenever the floss is tensioned. The intensity of the motion is then controlled by the amount of tension and the “rigidity” of the users grip on the two handles. The drive unit handle assembly may be from an inexpensive commercially available electric toothbrush such as a Crest Spinbrush™.

A labyrinth seal system is disclosed, including a stationary component having a plurality of radially inwardly projecting, axially spaced teeth extending therefrom; and a rotor having a plurality of radially outwardly projecting, axially spaced protrusions, each protrusion having a low pressure side and a high pressure side, wherein the low pressure side of at least one protrusion extends farther in a radial direction than the high pressure side.

The invention relates to a phase detection device of an engine. A cam shaft signal panel of the device is fixedly installed on a cam shaft. A crankshaft signal panel is fixedly installed on a crankshaft. Three normal teeth and an extra tooth are distributed at the edge of the cam shaft signal panel at equal intervals, and the extra tooth is located between two of the three normal teeth. N continuous equally-spaced teeth and a missing tooth are distributed at the edge of the crankshaft signal panel. A first Hall sensor is fixed to the edge of the cam shaft signal panel, and a second Hall sensor is fixed to the edge of the crankshaft signal panel. A cam shaft pulse signal which is generated by the first Hall sensor and represents cam shaft phase information and a crankshaft pulse signal which is generated by the second Hall sensor and represents crankshaft phase information are transmitted to an engine phase detection module. The engine phase detection module carries out analysis treatment on the cam shaft pulse signal and the crankshaft pulse signal so that engine phase data can be obtained. By means of the phase detection device of the engine, the start time of the engine is shortened, performance of an electric control system of the engine is improved, and the robustness of the electric control system is enhanced.

A restrained pipe joining system is shown comprising male and female ends each having aligned circumferential grooves which form a canal for passage of a locking key strap. During manufacture, the female belled end is sequentially formed over a Rieber style gasket and then over a ring shaped casing member having an inner circumferential groove formed on its inner circumferential surface. Preferably, the ring shaped casing has circumferentially spaced teeth that act as a pipe stop in cooperation with an outer circumferential groove on the male spigot to index the pipes to be coupled.

A seal assembly for sealing between a rotating component and a stationary component in a turbomachine. The seal assembly includes a plurality of radially inwardly projecting, axially spaced teeth extending from the stationary component, wherein at least one of the plurality of teeth has at least one axially extending hole therethrough. Axial flow of an operating fluid through the holes acts as an air-curtain to interrupt swirl flow in a seal cavity, therefore reducing steam force that could act to destabilize rotordynamics.

An anti-theft locking device for vehicles includes an annular locking sleeve mounted concentrically about and normally in frictional engagement with the vehicle steering shaft. The locking sleeve includes a body portion having a serpentine cross-sectional configuration, thereby defining on the inner periphery of the sleeve a plurality of alternate smooth convex projections and concave valleys. The convex projections are in frictional engagement with the circumferential surface of the steering shaft by a predetermined frictional force that is greater than the rotational torque force produced during normal steering operation of the vehicle. A plurality of circumferentially spaced teeth extend radially outwardly from the locking sleeve, thereby to define between the teeth a plurality of locking slots one of which is arranged to receive the free extremity of the locking arm of a locking device.

A locking device includes an enclosure having an insertion section formed with two holes for inserting into a connecting port on a computer, and a plurality of windows axially spaced on at least one side of the enclosure; a locking unit arranged in the enclosure and including a rod having axially spaced teeth, a push member connected to one end of the rod and having an engaging portion, a hooking member movably connected to the engaging portion with two hooking arms extended into the two holes on the insertion section; an elastic member located between the push member and the fixing seat; a plurality of rotating discs fitted on the rod corresponding to the windows and each having a plurality of numeral areas and a notch; and at least one push button movably arranged on at least one lateral side of the enclosure to interfere with the push member.

A manually manipulated shovel-like device for cleaning corrugated floors along the bottom of refrigerated containers and trailers having a blade, an elongate handle extending from the proximal end of the blade, and a plurality of elongate cleaning teeth extending perpendicularly from the opposed distal end of the blade, each of the cleaning teeth being individually slidably adjustable in both the lateral and the vertical directions with respect to the distal edge of the blade to enable the device to clean corrugated floors having unequally spaced apart corrugations of varying depth, joints between sections of corrugated panels, and uncorrugated sections near walls of the container, each of said teeth additionally being individually removable and replaceable from the blade so that teeth of various geometrical configurations and functional features may be used, including teeth tapered to a narrower distal tip, teeth of generally uniform width, and teeth having chisel-pointed edges, the blade optionally being curved to have a concave front side, the blade further optionally having frontwardly extending sidewalls.

An adjustable carrying device (12) includes a pair of gripping members (14, 16) in a slip joint pivot connection having a handle assembly (36) and gripping plates (20a, 20b) for grasping and handling an object. A pivotally activated/deactivated locking mechanism includes a plurality of evenly spaced teeth (66) within a guide track (54) and a cross member (76) biased between lock and unlock positions by a pair of torsion springs (74a, 74b). A pair of levers (22a, 22b) moved in unison by handle assembly (36) activate and deactivate the locking mechanism. While in unlock position a pair of coil tension springs (84) assist in the single handed adjustment of the gripping plates against the object's opposed surfaces. A subsequent upward pivotal motion of handle assembly (36) activates the locking mechanism, forcing gripping plates (20a, 20b) towards each other, firmly gripping the object prior to its lift.

A manually manipulated shovel-like device for cleaning corrugated floors along the bottom of refrigerated containers and trailers having a blade, an elongate handle extending from the proximal end of the blade, and a plurality of elongate cleaning teeth extending perpendicularly from the opposed distal end of the blade. Each of the cleaning teeth are individually slidably adjustable in both the lateral and the perpendicular directions with respect to the distal edge of the blade to enable the device to clean corrugated floors having unequally spaced apart corrugations of varying depths and widths, joints between sections of corrugated panels, and uncorrugated sections near walls of the container. The teeth are also individually removable, reversible and replaceable from their respective positions on the blade so that teeth of various geometrical configurations and functional features may be used, including teeth tapered to a narrower distal tip, teeth of generally uniform width, and teeth having chisel-pointed edges. The blade may optionally be curved to have a concave front side, and further have frontwardly extending sidewalls.

A multi-layer gasket including first and second functional layers, each having an opening. Each of the functional layers includes a compression bead, and the compression beads contact and seal against one another when the gasket is compressed between a cylinder head and an engine block. At least one of the functional layers includes a stopper disposed between the compression bead and the opening. The stopper has a gear-like shape including a plurality of circumferentially spaced teeth. Each tooth extends upwardly from a plane by a distance which is less than the combined height of the compression beads. When the gasket is compressed between the cylinder head and engine block, the stopper ensures that the compression beads remain elastically biased against one another and maintain a gas-tight seal.

The cutting tool shown generally as 1, has a disc with a peripheral cutting face. In this embodiment the cutting face includes an array of eight circumferentially spaced teeth 2. An open circumferential gutter 5 is located inboard of the teeth and is recessed into a lateral face of the disc. Fluid in the gutter drains into the passageways through the respective inlets under the apparent force due to rotation. A fluid passageway 9 runs between the gutter and the base of the each tooth. The fluid is thereby forced through the passageway and out of outlet 11.