Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7090057 | Composite friction disc with structural core and refurbishable lining elements A friction disc assembly having an annular structural core (40) and at least one friction lining disc (30). The annular structural core (40) is made from a strength-optimized carbon carbon composite and the friction lining discs (30) from... | 08/15/2006 |
| 6520301 | Friction lining attachments An attachment between segments (12) of a friction lining material and a brake shoe (11), in which the lining (12) is attached to the brake shoe (11) by a plurality of keying elements (16) attached by screws (17) to the brake shoe (11), and cooperating wit... | 02/18/2003 |
| 6354411 | Drum brake device A drum brake device in which the brake shoe return smoothly when releasing the parking brake on a slope. The points of the circumferential edges of the linings 6, 6 of the brake shoes 2, 3 at the service brake actuator side are located on the normal radia... | 03/12/2002 |
| 6253883 | Brake drum with parallel grooves In the brake drum, a plurality of grooves are formed on the slid surface thereof in such a manner that the grooves respectively extend in parallel to the sliding direction of the brake drum.... | 07/03/2001 |
| 5836428 | Brake shoe assembly having brake lining retainer members A brake shoe assembly including retainer members which aid in retaining the brake shoe lining in position on the brake shoe table. The retaining members include distal flanges which abut beveled distal edges of the brake shoe lining and a central wedge wh... | 11/17/1998 |
| 5630484 | Brake shoe and internal shoe drum brake A brake shoe for an internal shoe drum brake has an arcuate platform carrying a lining of friction material on its outer face. A web extends perpendicularly from the inner face of the platform and provides a shoe tip intended to be supported on an angled ... | 05/20/1997 |
| 5607034 | Cam brake shoe with formed edges An improved brake shoe table includes the edges of the brake shoe table being bent radially inwardly relative to the remainder of the table by between 45 and 90 degrees. The bent edges increase the rigidity of the brake shoe and also reduce localized lini... | 03/04/1997 |
| 5255762 | Brake shoe assembly with fasteners This invention relates to brake components having mechanically detachable friction members. The friction member of the present invention has a plate with a plurality of apertures. This apertured plate has a first surface that abuts a mounting surface on a... | 10/26/1993 |
| 5246093 | Drum brake assembly A drum brake assembly including a brake member comprised of a substantially circular shoe having a radially outer face on which at least one lining is mounted. The shoe is made from a high strength resilient material and is of substantially constant cross... | 09/21/1993 |
| 4782924 | Internal shoe drum brake with two liners on each lining support and means for reduction in wearing-in period At least one brake shoe (14) comprising a lining support member (16) and two lining sections (20) fastened one behind the other in circumferential direction to the support member (16) is arranged in a brake drum (10) which has a circular cylindrical inter... | 11/08/1988 |
| 4773512 | Drum brake shoe with reinforcement flanges or reinforcement plates positioned at irregular intervals for noise reduction A drum brake shoe is provided with a plurality of reinforcements which are arranged at irregular intervals on the inner periphery of a rim.... | 09/27/1988 |
| 4732240 | Drum brake assembly, brake shoes for same, and method A drum brake assembly with the brake shoe lining friction surface subtending over a total effective friction surface arc length between the shoe heel and toe ends of about 49° on the first or primary shoe, symmetrical about the shoe horizontal center lin... | 03/22/1988 |
| 4714142 | Railway car hand brake with release governor In a hand brake mechanism for railway cars in which a chain drum is rotatable by a manually rotatable shaft connected to the chain drum by a gear train, a centrifugal governor or brake connected to an intermediate gear of the gear train reduces the speed ... | 12/22/1987 |
| 4657119 | Device for attaching a component of a strut incorporating an automatic adjustment device for a shoe of a drum brake The attachment device incorporates a bearing zone (78) and a projection (80) formed in the web (16) of a shoe of a drum brake. A portion (68) of the component (46) to be attached to the shoe is retained in a working position between the bearing zone (78) ... | 04/14/1987 |
| 4646885 | Dual drum brake assembly 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 chan... | 03/03/1987 |
| 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 |
| 4387789 | Electrical brake lining wear indicator An indicator for indicating a predetermined amount of wear of a brake lining comprises a brake lining support member operably connected to a brake actuator and supported thereby, a brake lining is fixedly attached to the brake lining support member and wh... | 06/14/1983 |
| 4250980 | Drum brake adjuster A drum brake assembly includes a pair of brake shoes which are movable from a non-braking position to a braking position in engagement with a rotatable member. A hydraulic actuator is engageable with the pair of brake shoes to move the latter to the braki... | 02/17/1981 |
| 3998300 | Drum brake shoe A drum brake shoe has a rim providing a lining support plate, the rim edges being formed with projections and recesses on either side of a center section. The width of the rim is substantially constant throughout the majority of its arcuate length. The ar... | 12/21/1976 |
