Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7077249 | Drum 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 |
| 6672432 | Two piece stamped brake shoe A brake shoe assembly includes the first and second sections defining a lining surface and a mounting tab. The mounting tab extends perpendicular from the lining surface and includes a series of notches allowing the formation of the lining surface into an... | 01/06/2004 |
| 5599603 | Manufacture of carbon fibre preform In a method of making a carbon fibre preform such as for use in the manufacture of a friction disc a compressible body of carbon fibre or carbon fibre precursor material is acted upon by compressing means to compress the body to a required thickness and t... | 02/04/1997 |
| 5546880 | Annular filamentary structures and methods of making Fibrous substrates for the production of carbon and/or ceramic (including mixtures of these) fiber reinforced carbon and/or ceramic (including mixtures of these) composites and to methods of manufacture of same. A multilayered annular shaped fibrous struc... | 08/20/1996 |
| 5429215 | Quick change brake shoe with removable brake shoe pads A brake shoe assembly with a removable brake shoe pad. A brake shoe assembly includes a brake shoe plate. A brake shoe pad and a pair of connector plates are provided. The brake shoe pad is adjustably received on the bottom of the brake shoe plate. The co... | 07/04/1995 |
| 5328003 | Brake spring retention system for a cast brake shoe A brake return spring retention system for a cast brake shoe where a slot is located on the inside rib of the brake shoe having a width which exceeds that of a spring hook formed on one end of a brake return spring where the spring hook passes into the sl... | 07/12/1994 |
| 5255763 | Brake cam roller follower bracket A roller follower (12) and bracket (20) combination for use in a rotary cam type brake shoe assembly (100) is provided in which bracket (20) is supported on a web (2) of a brake shoe in such a manner that, when a free-end (27) of bracket (20) is inserted ... | 10/26/1993 |
| 5242746 | Friction elements of composite carbon-carbon material and of differential texture A multi-layer friction element is disclosed consisting of carbon-carbon composite material comprising a structure layer of so-called "coarse" texture comprising segments of rovings and at least one friction layer of so-called "fine" texture comprising fib... | 09/07/1993 |
| 4987979 | Anti-squeak bumpers for brakes A spacer (10) is used to prevent a vibratory noise created by two inelastic parts of a drum brake assembly (12) from contacting each other; the two inelastic parts being the backing plate (18) and the brake shoe (28). The spacer (10) is fabricated from an... | 01/29/1991 |
| 4936426 | Brake assembly A brake assembly, for a vehicle axle having a beam, including a spider mounted on the beam, a camshaft mounted on one end of the spider, a pair of anchor pins mounted on an opposite end of the spider, and a pair of brake shoes. Each of the brake shoes has... | 06/26/1990 |
| 4807729 | Brake roller retainer An "H" shaped retainer (60) is provided for retaining trunnions (42) of a brake cam follower roller (18) in open-sided bearing surfaces (20) at the end of spaced-apart webs (34) extending from a brake shoe (8). Retainer (60) features a bridging portion (2... | 02/28/1989 |
| 4771870 | Brake shoe assembly A brake shoe assembly for a vehicle includes a generally arcuate platform, to which a pad of friction lining is attached, and which is selectively connectable to a pair of supporting webs. Each web has a plurality of radially extending peripheral projecti... | 09/20/1988 |
| 4624348 | Roller retainer for brake assembly A roller retainer for a cam actuated vehicle brake assembly comprising a member preferably formed from spring wire to provide two substantially parallel legs with a tang at the end of each leg and a manual grip intermediate the legs. The tangs are seated ... | 11/25/1986 |
| 4573557 | Drum brake A drum brake assembly with a center guide backing plate, channeled web brake shoe assemblies slidably received on the center guide braking plate. A wheel cylinder assembly mounted in a notch on the center guide braking plate and engaged by a first set of ... | 03/04/1986 |
| 4573249 | Method of manufacturing brake shoe assembly The disclosed method involves making a brake shoe from symmetrical halves by placing a formed lining segment in position on laterally spaced brake shoe half sections with forces applied thereto to engage serrations in the shoe web half sections, forcing t... | 03/04/1986 |
| 4546862 | Drum brake A drum brake assembly with a center guide backing plate, channeled web brake shoe assemblies slidably received on the center guide braking plate. A wheel cylinder assembly mounted in a notch on the center guide braking plate and engaged by a first set of ... | 10/15/1985 |
| 4471859 | Drum brake An improved expanding shoe drum brake (10) is provided. The brake includes a shaft-like mounting structure (42) for retaining the hook ends (40) of a heavy duty brake return spring (28). The retaining assembly includes a fixed portion (44) and an axially ... | 09/18/1984 |
| 4372430 | Drum brake and retaining spring An improved drum brake (10) is provided with an improved retaining spring (28) which passes over or close to the axis of the brake anchor structure (18). The improved retaining spring is a one-piece coil tension spring comprising a coil portion (46) and a... | 02/08/1983 |
| 4360959 | Method for manufacturing a drum brake shoe A method for manufacturing a drum brake shoe comprises the steps of providing a strip of material, forming a plurality of connected blanks with the strip, bending each blank to form an arcuate surface with adjoining sides, cutting one of the blanks by ser... | 11/30/1982 |
| 4337851 | Brake support assembly A brake support assembly to be mounted on a vehicle axle housing for supporting a brake shoe assembly and an actuator therefor comprising a backing plate adapted to be fixedly mounted on a vehicle axle housing and two anchoring plates removably attached t... | 07/06/1982 |
| 4200174 | Cam and anchor pin spacer arrangement for a brake assembly A brake assembly for a vehicle includes a stamped spider member, an air chamber mounting bracket attached to one end of the stamped spider member, a cam shaft supported in the air chamber mounting bracket having an S-cam member affixed to one end thereof,... | 04/29/1980 |
| 4180149 | Drum brake and mounting means therefor A drum brake is provided with a pair of brake shoes having axially inner and outer webs for supporting friction linings. A backing plate mounts the pair of brake shoes by providing radially outwardly extending lugs which are disposed between the inner and... | 12/25/1979 |
