Abstract: The tensile force sensor comprises at least one strain gauge in a tension piece comprising a central rectilinear segment and two folds at an angle, significantly thicker than the central rectilinear segment. The strain gauge is arranged in said central rectilinear segment in such a manner that a traction force on the fastening ends of the tension piece results in a U-shaped buckling of the central rectilinear segment. The invention also comprises a processing module connected to the strain gauge, adapted to detect and process as data the elastic deformations caused in the central rectilinear segment by the longitudinal stresses generated by traction on the fastening ends of the tension piece. The invention allows a portable and low cost wireless sensor to be produced.

Abstract: A medical device support system including a central shaft, an extension arm, a brake clamp assembly, and a brake actuator. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake clamp assembly is secured in the hub for rotation therewith and includes first and second clamp portions. The brake actuator includes a cap, a plunger coupled to the cap for reciprocable axial movement relative to the cap, and a spring disposed between the cap and the plunger and configured to exert a biasing force against movement of the cap axially toward the plunger. The cap is adjustably mounted to the hub and coupled to the plunger to selectively urge the first and second clamp portions either toward or away from the central shaft to respectively increase or decrease a frictional braking force to the central shaft.

Abstract: A medical device support system including a central shaft, an extension arm, and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second backing portions and first and second liners supported by the backing portions. At least the first liner is supported by the first backing portion by the first liner being snap-fitted to the first backing portion. The brake assembly includes an actuator configured to flex the first and second backing portions to urge the first and second liners toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft.

Abstract: A medical device support system including a central shaft; an extension arm; and a brake assembly. The extension arm has a support for a medical device and a hub at its proximal end mounted to the central shaft for pivotable movement about the central shaft. The brake assembly is secured in the hub for rotation therewith and includes first and second discrete arc shape clamp pieces that are detachably coupled to one another at one end for flexural movement relative to a coupling joint and that are free at an opposite end. The brake assembly includes an actuator configured to flex the first and second clamp pieces relative to the coupling joint toward and away from each other to respectively increase and decrease a frictional braking force to the central shaft.

Abstract: A power tool brake mechanism, in particular a portable power tool brake mechanism, includes at least one mechanical brake unit that has at least one brake element mounted rotatably about a rotation axis and at least one actuating unit that has at least one movably mounted actuating element. The actuating unit is configured to activate and/or deactivate the brake unit. The power tool brake mechanism further includes at least one movement converting unit that has at least one movement converting element configured to convert a movement of the actuating element into a movement of a counter-brake element of the brake unit. The movement of the counter-brake element is at least in a direction that is different from a direction extending along the rotation axis of the brake element.

Abstract: A roll-like medium feeding apparatus includes a support shaft supporting a roll-like medium to be mounted in a freely attached and detached manner, and includes a mounting portion to which a first shaft becoming the support shaft is mounted with the movement of a direction perpendicular to the first shaft in a freely attached and detached manner; a second gear wheel that can be meshed with a first gear wheel disposed in the first shaft and can be rotated around a second shaft which is disposed so as to be parallel to the first shaft that is in the state of being mounted to the mounting portion; and a displacement mechanism that is operated so as to displace the second gear wheel between a meshed position to be meshed with the first gear wheel that is in the state in which the first shaft is mounted to the mounting portion and a separated position separated from the first gear wheel.

Abstract: Systems, devices, and methods for using an engine flywheel can provide both electric power output and braking of powered equipment. In particular, an engine flywheel can include a first rotor element configured to be coupled to a drive shaft for rotation with the drive shaft, one or more magnets carried by the first rotor element, the one or more magnets being configured for positioning with respect to a stator to generate electrical current upon rotation of the first rotor element, and a second rotor element configured to be coupled to the drive shaft for rotation with the drive shaft, the second rotor element including a braking surface configured for engagement with a braking element to slow the rotation of the second rotor element.

Abstract: An improved energy capacity brake employing a drum structure with dual braking surfaces may be utilized in a wide variety of industrial and commercial applications requiring braking action. The drum includes first and second annular drum parts joined together to provide a dual drum feature for use with a coupling component together forming a drum brake assembly. In an alternate embodiment the drum may be cast with a single disc member having two braking surfaces.

Abstract: Passenger conveyors with auxiliary brake systems are disclosed. The passenger conveyors include a truss that rotatably supports a loop sprocket at one end and a turnaround at an opposite end with an endless loop extending around the loop sprocket and the turnaround. The loop includes a plurality of rollers linked together. The truss is also coupled to a brake bar that has a braking surface, a downstream end and an upstream end. The brake bar is suspended above and biased towards the loop sprocket with the downstream end of the brake bar disposed a greater distance from the loop than the upstream end of the brake bar. A friction bar, which includes a first side that mateably engages the loop when placed onto the loop, is also provided that includes a top. The friction bar is suspended above the loop by an actuator, which is linked to a controller.

Abstract: The invention relates to an elevator brake, said elevator comprising a hoisting machine (1) provided with at least a frame part (2) and a traction sheave (3), and a brake drum (4) arranged to be rotatable with the traction sheave (3) and provided with a braking surface (5), and a brake (6) having an effect on the rotary motion of the traction sheave (3), said brake (6) comprising at least one brake block (8) provided with a braking surface, which brake block (8) has been arranged to act on the braking surface (5) of the brake drum (4) with a force directed substantially towards the braking surface (5). To allow adjustment of the size of the air gap (8a) between the braking surface of the brake block (8) and the braking surface (5) of the brake drum (4), the brake (6) is provided with at least one eccentric adjusting element (11).

Abstract: The object of the present invention are an apparatus for reducing emissions of dust generated during braking of a vehicle equipped with a drum brake, in particular an automotive vehicle, comprising the brake shoe, having a friction material layer mounted on the shoe base, intended for mounting on the fixed disc of the said drum brake from the inner side of this brake's drum and at least one suction nozzle intended for connecting via the compressed air hose to a vacuum source, characterized in that the suction opening of the suction nozzle (3) is located outside the friction material layer (3a) of the brake shoe friction lining (1), and a vehicle braking system equipped with a drum brake, in particular an automotive vehicle, which comprises the apparatus mentioned above.

Abstract: The present disclosure relates to a miniature precision clamping assembly driven by a shape memory alloy actuator wire (SMA wire) which may be employed within a braking or clutch system. The clamping assembly includes a first clamping element, a second clamping element and an SMA wire connected to the first and second clamping elements by being interwoven through a plurality of pressure amplifiers located on the exterior surfaces of the first and second clamping elements. Both the first and second clamping elements are configured to be positioned about a rotatable shaft and move in translation to the shaft via a transition action of the SMA wire between a clamping and releasing position. By energizing the SMA wire a contracting or compressing action is generated thereby causing the first and second clamping elements to move into engagement with the one shaft for inhibiting rotational movement.

Abstract: A spherical braking system mounted on a drive shaft of a vehicle comprising a brake sphere pad positioned just above and below a brake sphere and resting on an at least one segment of a brake housing wherein, the brake housing includes a top segment and bottom segment coupled to mounting dogs by using screws. A hydraulic cap installed on a threaded portion of a hydraulic shaft which is encircled by bushing and coupled near a brake sphere. A plurality of hydraulic lines connected from at least one hydraulic splitter are coupled to the hydraulic cap. When the driver depresses the brake pedal, pistons are forced into fluid chambers in the master cylinder. The resulting hydraulic pressure is transmitted through the hydraulic splitter and hydraulic lines to hydraulic caps which results the vertical movement of the brake pads causes a braking torque to be generated, slowing the rotation of the drive shaft and driven shaft simultaneously, which therefore decreases the speed of the vehicle.

Abstract: An apparatus for stabilizing a shaft in an essentially horizontal position while an anchoring object at one end of the shaft is replaced without removal of an object at the opposite end of the shaft that would otherwise tend to destabilize the shaft from its essentially horizontal position includes a half-spool member configured to clamp above and around the shaft to resist torque around the rotor, under supports configured to attach to the half-spool member and clamp an underside of the shaft below the half-spool member, and a hydraulic or mechanical brake configured to resist torque on the shaft when the brake is engaged.

Abstract: A connection element (20) is disclosed for connecting a hydraulic pipe to brake pliers, a brake cylinder, a slave cylinder and/or a master cylinder for a hydraulic brake and/or hydraulic clutch, in particular for motorcycles and/or bicycles. The connection element (20) has a fastening section (20A) for fastening the hydraulic pipe to the connection element (20), and a connection section (20B) for connecting the connection element (20) to the element of the hydraulic system. The connection section (20) has a ring-shaped zone (24) and at least one extension that extends away from the ring-shaped zone (24), substantially to the side of the ring plane. Also disclosed are brake pliers (30) for a hydraulic brake, in particular for motorcycles and/or bicycles, having a housing (31) in which a disk chamber for receiving a disk brake and at least one brake cylinder for receiving a brake piston (43) are formed.

Abstract: The present invention is a unique motor comprising a containment chamber having thick walls surrounding a thin wall, is created when a plug is fusible joined. An inlet port and preferably a purging port are located in the thick walls. A motion is created when said expansion wall expands as said containment chamber is pressurized.

Abstract: An incremental braking apparatus and method includes a first rotating member having a plurality of rigid stops spaced circumferentially around an outer cylindrical surface of the first rotating member, and a plurality of flexible stops arranged in a plurality of rows on a stationary member. The flexible stops are selectively movable toward the first rotating member from a disengaged position into an engaged position in which the flexible stops engage the rigid stops to provide a braking action on the first rotating member. An actuator with a beveled edge for engaging the outer ends of the flexible stops is operable to move a selected number of rows of the flexible stops into their engaged positions to provide an incremental braking effect. The rows of flexible stops are staggered such that the flexible stops in adjacent rows are not in circumferential alignment.

Abstract: Improved apparatus for manually releasing and controlling an elevator hoist brake having a solenoid with a vertically-actuated, flanged plunger operable to drive the brake shoes apart in opposition to brake springs which normally urge the brake shoes into the locking position, said apparatus comprising a bar having one end insertable between said solenoid and the flange of said plunger and engageable therewith, a handle having an enlarged portion projecting downwardly adjacent the forward end which is pivotally secured to said bar at a point spaced from said one end of said bar, a lever pivotally attached to said bar and having a forward end located adjacent said one end of said bar and dimensioned to be insertable between said solenoid and said flange of said plunger and engageable therewith, a link member pivotally connected to said bar at a point spaced from the forward end of said link and from said one end of said bar and having said forward end of said link pivotally connected adjacent the rear end of s

Abstract: A drum brake device which reduces the amount of non-effective stroke (play) and prevents noise for the long period of time. The first strut 12 of an automatic shoe clearance adjustment device is provided adjacent to the service brake actuator 8 and between both brake shoes 2 and 3. The parking brake actuator 19 is provided adjacent to the anchor block 9. The central region of the pivot lever 11 is rotatably supported with the central region of one brake shoe 2 as the fulcrum. Both ends of the pivot lever 11 functionally engage with the first strut 12 and the second strut 22 of the parking brake actuator 19 which comprises an automatic stroke adjustment device automatically adjust the stroke. When the brake shoes are opened by the service brake operation, one end 11c of the pivot lever 11 is elastically supported by the first strut 12 of the automatic shoe clearance adjustment device, and the spring applies spring force so that both pivot lever 11 and first strut 12 operate together with one brake shoe 2.

Abstract: The present invention provides a brake device for a children's vehicle which overcomes the drawbacks of a conventional brake device that causes different braking force when the wheel rotating in different directions. The brake device of the present invention is constituted by a brake disc rotating along with the wheel; and a pair of brake shoes pivotally secured by one end at a fixed portion relatively to the brake disc and capable of counterly fastening the circumference of the brake disc. When braking, the brake shoes rotate pivotally by the fixed portion to fasten the brake disc and stop the wheel. Since the pair of brake shoes always provide together a major and a minor braking force whenever the wheel rotates clockwise or counterclockwise, they always provide the same braking performance.

Abstract: A force balanced brake system for effecting ratio changes in transmission comprising a band brake unit (10) having separate bands (12 and 13) selectively engageable with a reaction drum (5), each with a piston apply lug (16 and 18) and anchor lug (17 and 19). With equal area apply pistons (21 and 41 charged with common pressure, apply and reaction forces are equal and opposite. Side loads are eliminated so the brake drum (5) is only piloted as a rotating component. The system provides freewheeler type shifts without specific one-way devices. The brake band unit (10) provides engine braking during vehicle coast. For freewheeler type shifts, the system is staged in a one-way mode and the torque capacity of the band is regulated to vary in direct relationship with the torque band (10) also reduces to a near zero value allowing the brake drum (5) to turn freely in the direction opposite to previous reactive torque.

Abstract: The present invention is a fail safe motor brake for use with relatively large industrial motors, and particularly electric hoist motors as used with large overhead industrial cranes. The present brake includes an actuation linkage which results in relatively little change in the initial height or "air gap" of the solenoid plunger or armature, as the brake linings wear. The limited change in the air gap is due to a mechanical stop which is built into the adjustment and actuation linkage, as well as the clamping pressure provided by the spring arrangement which serves to actuate the brakes. The solenoid of the present brake is offset from the plane of the brake shoes, thus allowing removal and replacement of one or both shoes without need to remove the solenoid. This allows the brake shoes to be removed without need to readjust the actuation linkage. The present motor brake provides excellent performance throughout the life of the brake linings, without need to adjust the actuation linkage during this period.

Abstract: A braking method and apparatus wherein a rotating mechanism includes a deformable rotor carried by the rotating mechanism with pressure rollers suitable to contact the exterior of the deformable rotor and apply pressure to deform the rotor and thus cause the deformed rotor to resist rotation, resulting in a braking action.

Abstract: A method of and a device for forming blisters in which a web material consisting a thermoplastic resin that is supplied to a rotary forming drum is heated and deformed by heat in accordance with the configuration of cavities provided on the rotary forming drum. A predetermined tension is applied forming web material while feeding it. When the rotary forming drum consists of a polygonal drum, each peripheral surface of the drum is formed as a curved surface extending along an arc whose radius is larger than that of the circumscribed circle of the polygon. This invention can be used in a packing device for foods, drugs, etc.

Abstract: Rail vehicles have a brake linkage being acted on by a brake cylinder for acting on at least one wheel set of a bogie, truck or running gear of the rail vehicle through brake blocks having brake block shoes and brake block shoe inserts. A block brake for rail vehicles should be economical and be constructed in such a way that higher braking capacities can be achieved, that damage to the tires of the wheels of the wheel set is avoided and that wheel noise of the wheel sets is minimized. The block brake includes at least one rotationally symmetrical brake body being fixedly disposed on a wheel set shaft of the wheel set between the wheel discs of the wheel set. The acted-on brake block rests on an outer surface of the brake body.

Abstract: The emergency brake for a passenger conveyor such as an escalator or moving walkway is provided with a brake force adjustment assembly which will supply a braking force that is proportional to the passenger load imposed on the main drive motor of the conveyor at any point in time. Thus, if the conveyor is lightly or heavily loaded with passengers, the emergency brake force will be automatically proportionally decreased or increased so that, in the event of an emergency stop condition, the braking force applied to the drive sprocket axle will be sufficient to stop movement of the conveyor within the predetermined time period that is preprogrammed into the conveyor controller.

Abstract: An arrangement for automatically engaging and disengaging a brake on rotating apparatus comprising a rotatable brake drum and a pair of brake shoes pivotally mounted for engagement with the drum. Free ends of the brake shoes are urged together by spring forces bringing the brake shoes into braking engagement with the drum. A brake release mechanisms includes a pivoted release member with a cone-shaped stud slidably connected thereto. The brake shoes are disengaged by rotating the release member which forces the stud between the brake shoe free ends and separates the brake shoes from the drum. The conical stud and its slidable connection to the pivoted release member simplifies assembly and maintenance of the arrangement.

Abstract: A walker that has wheels to facilitate its movement when it is not being relied upon as a primary means of support and that has brakes to hold said wheels against rotation when it is. The wheels are arranged in a tricycle configuration and brakes are associated with the two rear wheels. A pair of brake pads flank each wheel and are held into braking relation to each wheel by a pair of spring members, there being one spring for each brake, when little or no weight is applied to the walker by the user. The springs are compressed and the wheels are free to rotate when the weight of the user is applied to the walker. The user's forearms rest in padded armrests and hand grips are provided forwardly of those arm rests. The walker is adjustable in height and is foldable when not in use.

Abstract: A fluid-actuated brake assembly for braking a clutch shaft (2) of a fluid-actuated clutch (4) comprises a support plate (9) having an integral fluid cylinder mechanism for operating a pair of brake shoes (10A, 10B). The support plate includes a retaining bore (8) adatped to be fitted on a bearing (7) for receiving the clutch shaft and is secured onto a support wall (14) which holds the bearing. The brake assembly may be preassembled and, then, may be installed into a vehicle like a cassette.

Abstract: A tread brake unit including a spring actuated compensating mechanism for maintaining the brake unit piston stroke constant. A roller associated with the compensating mechanism is adapted to ride along an operating surface of a lever arm that rotates according to the degree of piston stroke. The profile of this operating surface regulates the roller movement to prevent the stressing of operating springs in the compensating mechanism from exceeding a maximum value corresponding to their fatigue limit.

Abstract: A safety brake for stopping an escalator in the event of a malfunction or the like, includes a locking pawl to prevent disengagement of the brake until the latter is intentionally released. Over the locking pawl reach a reinforcement of the brake. The brake is released by energizing a solenoid which displaces the locking pawl to an inoperative position. Once the locking pawl is disabled, the brake shoes are released from engagement with the escalator drive shaft brake disk. Locking and release of the brake shoes are initiated by springs and solenoid.

Abstract: A brake system for braking a shaft of an apparatus subject to runaway to stop runaway. The system comprises a brake drum on the shaft, one or more brake shoe(s) engageable with and disengageable from the drum, and a control member connected to the brake shoe(s) movable in one direction to a first position for applying the brake shoe(s) and in the opposite direction to a second position for releasing the brake shoe(s). The control member is biased to its first position for applying the brake shoe(s), and a torque motor is connected to the control member for moving the control member on energization of the torque motor to the second position and holding it there for release of the brake shoe(s). A device responsive to runaway of the apparatus for de-energizing the torque motor is provided, the control member being released on de-energization of the torque motor for applying the brake shoe(s) to the drum.

Abstract: A live roller zero pressure accumulation conveyor and brake assembly are described. The brake assembly includes a rotatable drive shaft surrounded by a tubular torque tube. The drive shaft extends into the torque tube and has a diameter such that the cylindrical surface of the drive shaft is capable of frictionally engaging the interior of the torque tube to rotate the torque tube when the drive shaft is rotated, but to slip relative to the torque tube when rotation of the torque tube is restrained. Clamping members surround the torque tube and are movable relative to the exterior surface of the torque tube between a first position in which the clamping surfaces are moved out of contact with the torque tube and the rotating drive shaft rotates the torque tube, and a second position in which the clamping surfaces move into contact with the exterior of the torque tube to restrain the torque tube from rotating with the drive shaft.

Abstract: The invention relates to an open-end rotor-spinning device with a rotor shaft which is mounted and driven in the wedge-shaped gap between supporting disks and to the free end of which is assigned an axial bearing. A simplified mounting, which also allows the supporting disks to be removed and exchanged while the machine is in operation, is provided because the rotor shaft (1) is mounted at two bearing points, of which one is formed by supporting disks (2, 3) arranged in the vicinity of the spinning rotor (10) and the second is a bearing (5) which absorbs axial and radial forces and which receives the free end (11) of the rotor shaft (1). An increase in the operating speed of the spinning rotor (10) without an increase in the running speed of the drive means (6) is achieved as a result of a reduction of the diameter of the rotor shaft (1) in the region of the drive means.

Abstract: The invention concerns a frequency converter-controlled squirrel cage motor particularly for use in elevator operation. The motor's stator is mounted on a stationary axle and the rotor rotating around the stator has been rotatably carried on the same axle. On the outer periphery of the rotor a cylinder has been mounted, carrying rope grooves and a brake surface for the elevator's lifting ropes and brake.

Abstract: A locking device for a circumferentially grooved reciprocating member is disclosed. In one embodiment the locking device includes a housing, through which the reciprocating member passes, having a pair of spring biased locking elements and a release element disposed therein. Locking is achieved by insertion of the locking elements into the reciprocating member circumferential groove. Unlocking is effected by displacement of the release element towards the locking elements along a line perpendicular to the reciprocating member to withdraw the locking elements. In an alternative embodiment a spring biased retention pin is provided to selectively engage and retain the release element in proximity to the locking elements. An annular ring may be disposed about the reciprocating member adjacent the circumferential groove to displace and disengage the retention pin from the release element.

Abstract: A drive system for slides and x-y stages in microscopes and similar instruments having the possibilities of both fine control and rapid displacement of the slides over larger distances. The drive system comprises a friction wheel and a friction track provided between the slide and the stationary slide guide. A friction wheel together with an actuation knob are solidly fixed on a common shaft and this common shaft is displaceable against a spring force so that the friction wheel is out of contact with the friction track. A brake shoe is provided for each shaft and a clamping element is provided for each brake shoe. The shafts are supported in ball bearings. The brake shoes are closed plastic rings and the clamping elements press uniformly by their U-legs and from diametrically opposite sides against the plastic rings in the braking position, the direction of the force passing through the center axis of the coaxial shafts.

Abstract: A drum brake assembly is described to comprise a dual drum brake housing mounted to a vehicle wheel or shaft to be rotated therewith. The dual drum brake housing has two axially extending, concentric, radially spaced drum surfaces defining an annular channel between them. A torque member is fixed against rotation with the vehicle wheel and an expandable friction lining assembly is mounted to the torque member. The friction lining assembly is positioned within the annular channel and carries radially outward and radially inward facing friction linings. Upon expansion of the friction lining assembly each of the friction linings is moved into contact with the corresponding drum surface, thereby transferring braking force to the wheel.

Abstract: Rotating and positioning tool for axially symmetrical workpieces, especially for steering tie rods in motor vehicles. A housing with a recess for the introduction of a workpiece accommodates a clamping mechanism with a crown gear that is positioned and driven at its circumference. An empty space inside the crown gear communicates with the outside through an access slot. The space is demarcated by a contour. Three tension rollers are accommodated inside the empty space in such a way that they can be displaced radially inwardly against the force of springs. The rollers roll along the contour. The distance of the contour from its axis of rotation continuously varies through alternating maxima and minima. As the crown gear rotates, the tension rollers are forced in from a starting position where the distance is maximal and securely clamp the workpiece, which is located at the axis of rotation.

Abstract: The invention comprises a frame having open bearings for removably receiving the spindle of a reel therein. Each of the bearings is mounted for vertical movements to control the operation of a brake for automatically regulating the braking force against the reel or spool as a function of the weight thereof. The construction is such that the reels or spools can be easily replaced without disassembling the apparatus.

Abstract: Cradle for a twisting machine with a brake for a reel spindle comprising a brake drum and first and second brake shoes operable in succession. The in succession operation is achieved with a brake release link which pivots about either of two relatively offset axes. A component of load is placed upon the release link initially in one direction to cause it to pivot around one of the axes and operate the first brake shoe. Pivoting then takes place around the other axis to operate the second brake shoe.

Abstract: An apparatus for restraining a wheelchair in a transit vehicle utilizes a fixed bumper that is adapted to engage the rear portion of a wheelchair wheel in which a movable restraining bumber is adapted to hold the wheelchair wheel in compression between the fixed and movable restraining bumpers. The movable restraining bumper is adapted to move toward and away from the wheelchair and to rotate out of the way when the wheelchair restraint is not in use. A passenger barrier is also adapted to move toward and away from the wheelchair and rotate out of the way when the wheelchair restraint is not in use.

Abstract: A braking device with two braking members for frictional engagement with a surface and a brake release linkage, a part of which is pivotable about two positions. A feature is provided to cause pivotal movement of the part in a first sense upon application of an initial brake release load upon the linkage part to reduce and then release the braking load applied by the first braking member. The application of an additional brake release load effects pivotal movement of the linkage part in a second sense to reduce and then release the braking load by the second braking member.

Abstract: A propeller shaft immobilizer having a substantially hollow, open ended rectangular lower base portion fixedly mounted to the floor portion of a boat. An upper support base portion is slidably mounted on the lower base portion to allow vertical movement of the upper base portion. Upper and lower engaging surfaces are movably mounted on the upper base portion and movable by hydraulic power to frictionally engage the propeller shaft to be immobilized.

Abstract: A restraining device for controlling the movement of a loaded strop 3 comprises a power-driven reel for the strop and an associated pair of toggle-controlled clamping jaws 14, 15 pivoted at 16 and 17 respectively. The jaws are cross-connected by a link 18 and are loaded into the operative position to grip the strop 3 by a spring 25. The controlling toggle comprises links 28 and 30 pivoted together at 31, the link 28 being pivoted to the jaw 15 at 29 and the link 30 being pivoted to a fixed point 32. The link 30 carries a pivoted hand-lever 35 for releasing the toggle and formed with a hook portion 42 which engages with a corresponding hook portion 44 on the link 28 to lock the toggle in the released position to free the strop. The lever 35 can be released either manually or automatically by the piston 37 of a pneumatic cylinder 38. When the lever is released, the toggle moves to the braced position where it assists the action of the spring 25 in holding the jaws together to grip the strop.

Abstract: A chuck brake is secured to a hand-held reversibly rotatable drill of the variable speed type having a chuck. The chuck brake permits selective tightening or loosening of the chuck by operation of the drill. Brake shoes surround and are adapted to engage at least a portion of the peripheral surface of a housing of the chuck, being secured to the front of a drill on opposite sides of the chuck. The brake shoes are manually engageable by pinching action of the user for movement between a first position permitting free rotation of the chuck housing and a second position providing friction between the brake shoes and a first area of the chuck housing. In the second position, rotation of the chuck housing in one direction is impeded, as for tightening. The brake shoes are shiftable also toward the drill to a third position in which increased friction with the chuck housing is provided to impede rotation of the chuck housing in an opposite direction, as for loosening of the chuck.

Abstract: A shoe or friction brake having the brake levers thereof connected both at the pivotably mounted end and also at the end driven by a brake spring mutually independently of one another at the brake housing. The pivotably mounted end is connected with the brake housing by elements which have a resilient or spring action perpendicular to the direction of action of the brake spring. These resilient elements are in the form of plate springs and/or a leaf or blade spring. The bearing means for each brake lever is arranged between the plate springs. Each brake lever has operatively associated therewith a choke or reactance coil, and the choke yoke or the like is arranged at the bearing means and the choke core at the brake housing. With the brake levers located in their braking position the latter, when subjected to load, are movable perpendicular to the direction of action of the brake springs, so that the air gaps of the choke coils can be reduced or increased in size, as the case may be.

Abstract: A motorcycle throttle gripper having two friction levers with one friction lever positioned below the throttle grip hand control and closely mounted brake lever hand control and with one friction lever positioned above the throttle grip hand control and closely mounted brake lever hand control. On each of the two friction levers a rounded concave offset section seats on and grips the throttle grip hand control roughly similar to an external brake band or segment of a brake band around a brake drum or wheel. Also, on each of the two friction levers a straight section is mounted in sliding contact with the forward brake lever hand control. On the three embodiments of the invention the upper and lower friction levers are held in friction contact to the throttle grip hand control and the brake lever hand control by means of tension producing rubber bands, elastic members, or by means of tension producing springs, bolts, and self locking nuts.

Abstract: A brake and wheel assembly for vehicles having small diameter wheels and heavy axle loading requiring high capacity braking is disclosed. An axle extension shaft cantilevered transversely on a vehicle frame mounts rotatably a dual wheel hub which also serves as a brake rotor in coaction with a pair of wide brake shoes. A mounting unit for brake mechanism including a rigid backbone member is cantilevered from the vehicle frame across the axis of the axle extension shaft and brake rotor. The backbone member locates and supports front and rear brake cylinder bodies and associated anchor pins for the brake shoes and also supports a brake shoe upper guide. Brake shoe hold-down bases and other components are attached to a back plate of the brake mechanism mounting unit which also includes a side cover. A mechanical parking and emergency brake is included in the assembly along with required brake adjustment features.

Abstract: A braking device including a circular rotor coaxially fixed to the shaft of a rotary machine, a brake drum made of a material for elastic deformation and mounted on the rotor, and rollers interposed between the circular rotor and the brake drum. The rollers are adapted for rotation around the axis of the rotor as long as the brake drum maintains circularity, and adapted to be locked between the rotor and the brake drum when the brake drum is caused to deviate from circularity.