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Class 188/196P - Friction


Subclass of Class 188 - Brakes
No. of patents: 116
Last issue date: 10/18/2011


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NumberTitleIssue Date
8037979Arrangement for reducing a rotational speed of a rotating member
An arrangement for reducing a rotational speed of a rotating member includes a first and second pressure member arranged at a distance from each other and an opposite sides of the rotating member for movement relative to each other between a retracted position and a...
10/18/2011
7380644Disc sliding mechanism
A brake system includes a brake disc having a first disc face and a second disc face on a first side and a second side, respectively, of the brake disc. The brake disc is mounted rotatably fast with but longitudinally slidable on a rotatable shaft. The brake disc is...
06/03/2008
7228772Brake positioning system
A saw is disclosed having a detection system adapted to detect a dangerous condition between a person and a saw blade, and a brake adapted to stop the saw blade in response to detection of the dangerous condition. The saw further includes a brake positioning system ...
06/12/2007
7178645Brake apparatus having automatic clearance adjusting mechanism with overadjustment preventer
A brake apparatus having an automatic clearance adjusting mechanism with an overadjustment preventer constituted such that a piston is constituted by a structure of being divided in a plug piston 16 and a ring piston 14. The plug piston 16 is in...
02/20/2007
7077249Drum brakes with interconnected multi-degrees-of-freedom shoes
This invention is a new type of drum brake and its variants for motor vehicles, the shoe mechanism assembly of which has at least one set of interconnected shoe mechanism and automatic adjusting mechanism of brake clearance. The interconnected shoe mechanism consist...
07/18/2006
6766886Self-adjusting braking apparatus
A brake apparatus includes a brake disk secured to a shaft and a reaction plate secured to a housing. The brake apparatus further includes a fluid actuated piston which urges the brake disk against the reaction plate to slow rotation of the shaft and an adjustment m...
07/27/2004
6684983Optimized split type expander for adjustable piston actuators for multi-disk brakes and clutches
A brake adjustment mechanism maintains a brake actuating piston (17) stroke within a preferred range compensating for brake wear by repositioning the piston along a deformable adjustment tube (33). The tube is deformed when excessive piston travel draws t...
02/03/2004
6543585Automatic brake clearance adjuster
The present automatic clearance adjuster mechanism maintains a predetermined maximum brake clearance regardless of the wear condition of the brake. The brake includes a longitudinally extending rod mounted to the brake housing external to the piston eleme...
04/08/2003
6367591Automatic brake clearance adjuster
The present automatic clearance adjuster mechanism maintains a predetermined maximum brake clearance regardless of the wear condition of the brake. The brake includes a longitudinally extending rod mounted to the brake housing external to the piston eleme...
04/09/2002
6328137Disk brake assembly
An annular disk brake assembly having a housing mounted to a vehicle and a rotor disk mounted to a wheel of the vehicle. Annular brake pads extend parallel to the rotor disk within the housing and are mounted thereto with at least one brake pad being mova...
12/11/2001
6293371Disc brake assembly
A vehicle brake assembly is disclosed in which a single annular piston body (20) working in a circular bore is used to apply a first one of a pair of annular pad assemblies (102, 103) to a rotor assembly (101). The brake incorporates a ball and ramp mecha...
09/25/2001
6244393Disc brake caliper
A disc brake caliper including a brake piston movably arranged therein. The brake piston is sealed in relation to the brake cylinder by a sealing ring, which is arranged in a circumferential annular groove of the brake cylinder. The sealing ring functions...
06/12/2001
6234279Automatic adjuster for brake piston
An adjustment arrangement for a hydraulic brake actuator (11) of the type having a piston (17) which moves a preferred distance within a cylindrical bushing (15) portion of a housing between a quiescent retracted position with a preferred clearance space ...
05/22/2001
6230856Rod locking mechanism for compression slack adjuster
A locking assembly for preventing accidental let out of a slack adjuster is provided wherein the slack adjuster includes an elongated hollow housing member and an elongated rod member mounted for reciprocal movement within the hollow housing member. At le...
05/15/2001
6019199Hydraulic caliper disk brake for steel mill cranes
A hydraulic caliper disk brake (10) according to the present invention includes a caliper base (46) that is supported by a folding triangular base (14) that generally includes a mounting base (30) and a support arm (54). The caliper base (46) is pinned to...
02/01/2000
5934416Floating caliper-disc type brake
A floating caliper-disc type brake is capable of defining a second gap between a disc and an outer pad when the same brake is released, preventing a dragging torque from being generated during the traveling of a vehicle, improving fuel consumption of the ...
08/10/1999
5749451Clutch assembly with a piston stroke adjuster
A clutch assembly has a clearance between the piston and the clutch pack when the clutch is disengaged. This clearance is set and maintained by a one-way mechanism which establishes the limit of linear movement of the clutch piston during piston retractio...
05/12/1998
5607033Disc brake caliper having a linear slack adjuster assembly
There are disclosed several embodiments of a disc brake caliper assembly in which adjustment is made for wear on the pads by a non-rotating linearly expandable and retractable linkage arranged between a brake actuator and the pads. The linkage includes in...
03/04/1997
5601163Automatic adjuster for brake calipers
Apparatus for automatically compensating or adjusting for the slack or added travel as frictional material on brake pads wears during repetitive brake applications. A stack of snap rings each having a gap in its periphery is collapsed or compressed and as...
02/11/1997
5465816Slack adjusting brake cylinder for a brake unit on a railway transit vehicle
A slack adjusting brake cylinder for use in a fluid brake unit of a railway transit vehicle having a brake piston slidably mounted on a support rod within a brake cylinder receiving cavity of the brake unit. A plurality of friction/load rings are slidably...
11/14/1995
5427211Piston stop pin for a hydraulic brake
The invention is directed to a stop pin for a hydraulically actuated brake. The stop pin is provided with a rotation prevention portion for preventing relative rotation between the hydraulic brake piston and the brake housing. The stop pin is provided wit...
06/27/1995
5400879Drum brake wheel cylinder with internal automatic adjustment
The drum brake wheel cylinder (20) comprises a longitudinal through bore (16) having therein a pair of opposed pistons (22, 24) with each piston (22, 24) engaging a respective web (12, 14) of an adjacent drum brake shoe. A first piston (22) includes a lon...
03/28/1995
5284228Floating-caliper spot-type disc brake with actively restored brake shoes
A floating-caliper spot-type disc brake is disclosed having an arrangement for actively retracting the indirectly actuated external brake shoe to create a clearance with the brake disc. Elastic spring elements (24, 34, 38, 45) engage the external brake sh...
02/08/1994
5253736Railway brake actuator
A railway brake actuator which provides both service and parking braking comprises a cylinder having an operating cavity. A piston assembly in the operating cavity has a stepped bore forming second and third cavities and is extended by hydraulic pressure ...
10/19/1993
5234090Clearance adjustment for a multi-plate fluid operated friction clutch
A fluid operated friction clutch has a power piston which is selectively pressurized to urge a presser plate into abutment with a clutch disc pack to enforce frictional engagement thereof. The presser plate has an inner annular surface which is axially al...
08/10/1993
5219046Aircraft brake
An actuator mechanism for a braking system employing multiple disc brakes to insure an air gap between the pressure plate of the brake stack and the piston head of a piston. The piston is mounted in a cylindrical housing with an end wall to which a rod is...
06/15/1993
5217093Disc brakes
The present specification discloses a clamp member and a torque taking member with the clamp member being slidably mounted on the torque taking member by at least one sliding pin connection, whereby the clamp member can slide relative to the torque taking...
06/08/1993
5186286Electromagnetic brake
An electromagnetic brake is disclosed which comprises a brake wheel, a friction surface touching the brake wheel during braking and attached to an anchor plate moved by brake springs and an electromagnet which disengages the friction surface from contact ...
02/16/1993
5186284Fail safe self-adjusting disc brake
A fail safe self-adjusting brake is disclosed in which a service piston selectively actuates brake discs to contact shaft discs and apply braking to the shaft. The service piston is hydraulically actuated. Should there be a system failure an emergency pis...
02/16/1993
5176227Railway service and parking brake actuator
A brake actuator for a railway brake which provides both service and parking braking comprises a cylinder having an operating cavity. A piston assembly extends into the operating cavity and has a stepped bore including second and smaller third cavities. A...
01/05/1993
5161649Multiple disk brake having a clearance take-up device
A multiple disk brake is disclosed which includes a pusher movable toward and away from a friction surface, spring means urging the pusher away from the friction surface, at least one bush slidable to an interference fit within a corresponding seat of the...
11/10/1992
5080202Wheel cylinder
The invention relates to a wheel cylinder for a drum brake, comprising a body (2) provided with a longitudinal bore, two pistons (4,6) sliding in opposite directions outwards in the bore under the action of a pressurized fluid introduced between the pisto...
01/14/1992
5076593Disc brake caliper seal
A disc brake caliper seal arrangement wherein an annular seal is provided between the caliper housing and the outside diameter of the piston provided therein. The seal provides a rollback function which returns the piston to a given running clearance betw...
12/31/1991
5058714Apparatus for a drum brake, in particular for mechanically actuatable self-energizing internal shoe-type drum brakes for automotive vehicles
An apparatus for a drum brake for mechanically actuatable self-energizing internal shoe-type drum brakes for automotive vehicles. A pair of brake shoes (4, 5) is arranged on a brake carrier plate (27) at a thrust member (6) and furnished with tension spri...
10/22/1991
5018434Self-adjusting servo mechanism for actuating a friction band assembly in a planetary gear set
The present invention is directed to a self-adjusting servo mechanism (10). The servo pin (30) presented from the servo mechanism (10) will protract sufficiently to effect operative engagement of a friction band assembly (13) with a rotating member (18) i...
05/28/1991
5002164Push-rod guide for air-operated diaphragm spring brakes
An improvement in a conventional air-operated diaphragm spring brake is provided by a guide (100) being disposed in registry with an aperture (26) in a service brake housing (16). A push-rod (10) extends from a diaphragm (58) within the housing (12) throu...
03/26/1991
4993532Automatic readjusting assembly for an electromagnetic clutch or brake apparatus
An automatic air gap readjusting assembly in a clutch or brake unit is operated by electromagnetic and spring forces. A drive shaft 3 frictionally mounts, by a plurality of O-rings, an adjustment member. The adjustment member is readjusted by a contact or...
02/19/1991
4966255Automatic wear compensator for electromagnetic brake
An electromagnetic motorbrake has three wear compensating studs with threaded portions that receive nuts. The threaded nuts define cylindrical wrap surfaces for spring clutch elements that are coupled between the armature and the pressure plate of the bra...
10/30/1990
4936161Cable length adjuster with push and lock attachment
A cable length adjuster with push and lock attachment for attaching and adjusting the length of a cable with respect to a support member. The cable length adjuster includes a stud having an externally threaded end portion and an intermediate boss formed w...
06/26/1990
4887696Disc brake
A disc brake assembly comprises a caliper member that is rectilinearly movable relative to a support member via a pin member that slidably guides the caliper member while secured to the support member. A second pin member is secured to and movable with th...
12/19/1989
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