Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7261190 | Reaction lever for a parking brake A lever for moving first and second brake shoes into engagement with a drum to effect a brake application. The lever has a first end connected to the brake shoes and a second end with a tine fixed thereto to which a cable is connected to apply an input force to effe... | 08/28/2007 |
| 7178642 | Drum brake An adjuster for a strut located between first and second friction members for a drum brake. The strut has a shaft that is free to rotate in a first end member and threaded into the second end member. A lever pivots during a brake application and engages a ratchet wh... | 02/20/2007 |
| 7100746 | Motor vehicle drum brake and related assembling method In order to facilitate assembly and disassembly of a vehicle, the invention provides a method of assembling and disassembly a drum brake (1). In this assembly and disassembly method, the operating spacing of two brake shoes (4 and 5) inside a dr... | 09/05/2006 |
| 7093695 | Park brake cable end assembly for a drum-in-hat disc brake assembly This invention relates to an improved park brake cable end assembly for a drum-in-hat disc brake assembly having a disc service brake and a drum-in-hat parking and emergency brake. The drum-in-hat disc brake assembly includes a backing plate adapted to support a dru... | 08/22/2006 |
| 6742633 | Linkage for joining a lever to a brake cable A linkage for connecting a brake cable to an actuator lever in a drum-in-hat park brake assembly. The linkage is defined by a continuous wire that is shaped into a base with parallel and adjacent first and second legs located in a first plane perpendicular to the ba... | 06/01/2004 |
| 6739434 | Linkage for joining a lever to a brake cable An linkage for connecting a brake cable to an lever in a drum-in-hat park brake assembly. The linkage is defined by a continuous wire that is shaped into a first engagement section that is separated from a second engagement section by a center section. The first eng... | 05/25/2004 |
| 6702071 | Adjuster strut An adjuster strut (10) for use in a drum brake assembly. The adjuster strut (10) has an adjustable elongate extent with first and second engagement means (17,37) disposed at opposite ends thereof for engaging opposed braking members (11,12,35) of a brake ... | 03/09/2004 |
| 6234281 | Attachment of a brake cable with an actuator of a parking brake A parking brake having first and second brake shoes with a first end engaging an anchor post on a backing plate and a second end engaging an adjuster. An actuator located adjacent the anchor post has a first end that engages a first web on the first brake... | 05/22/2001 |
| 5957247 | Actuator for a parking brake A drum-in-hat brake assembly (10) having first (12) and second (14) brake shoes retained on a backing plate (16) by first (18) and second (20) pins connected to the backing plate (16). The first (12) and second (14) brake shoes are aligned on the backing ... | 09/28/1999 |
| 5758750 | Automatic adjustment strut for a drum brake An automatic adjustment strut for a drum brake which is mounted in the vicinity of actuating member and located between a first end of first and second shoes. The first and second shoes are lined with friction pads. The strut has a body with first and sec... | 06/02/1998 |
| 5720367 | Parking and emergency brake operating mechanism for dual mode drum brake assemlby A dual mode drum brake assembly includes a backing plate, a brake drum, and first and second brake shoes supported on the backing plate and movable into frictional engagement with the brake drum. The drum brake assembly further includes a service brake me... | 02/24/1998 |
| 5316115 | Brake actuator A brake actuator has a housing containing tappets operable by a cam to apply brake shoes against a rotary brake drum. The housing defines a cavity to which lubricant is admitted. A flexible element which is not compressed at the maximum positive system lu... | 05/31/1994 |
| 5275260 | Dual mode drum brake assembly A dual mode drum brake assembly having an improved duo-servo parking and emergency brake lever mechanism includes a pivot lever pivotally supported relative to a first brake shoe and operatively coupled to exert an outward force on the first brake shoe wh... | 01/04/1994 |
| 5070968 | Leading/trailing drum brake having servo parking brake A drum brake assembly wherein the hydraulic service brake acts as a leading/trailing brake and the parking or emergency brake acts as a duo-servo brake. A lever member is pivotally mounted on one of a pair of brake shoes and operated by a brake actuating ... | 12/10/1991 |
| 5058713 | Hydraulic drum brake assembly In a hydraulic drum brake and parking brake assembly, when a hydraulic actuator is operated to engage an opposed pair of brake shoes with a brake drum after a predetermined amount of wear had occurred on the friction pads of the brake shoes, a torsion spr... | 10/22/1991 |
| 5038898 | Drum brake The present invention involves an improvement in a conventional drum brake assembly which utilizes a pair of brake shoes separated by an adjustable strut. A parking brake lever is pivotally attached to one of the brake shoes and when it is rotated in a br... | 08/13/1991 |
| 4842104 | Internal shoe drum brake An internal shoe drum brake has a pair of shoes (1, 2) mounted on a backplate (3), and a mechanical shoe-expansion mechanism which includes a lever (9) movable angularly in a plane parallel to the backplate, an abutment device (13) mounted on the shoe (2)... | 06/27/1989 |
| 4782923 | Automatic gap regulator for drum brake A strut type automatic gap regulator for a drum brake in which a pair of brake shoes are mounted opposite each other and adapted to be moved apart in a braking action. Toothed portions of a strut engage similar toothed portions of a latch which engages a ... | 11/08/1988 |
| 4623045 | Automatic brake adjusting mechanism An internal shoe drum brake having a pair of hydraulically actuated brake shoes and an automatic brake adjusting mechanism. The brake adjusting mechanism includes a variable length strut disposed between the two brake shoes and actuated to increase in len... | 11/18/1986 |
| 4518063 | Automatic slack adjuster An automatic slack adjuster having compression force transmitting elements of adjustable length mounted between a key and a pair of brake shoes is provided with a wheel journalled on the key shaft and at one side in tooth engagement with parts of the forc... | 05/21/1985 |
| 4503949 | Drum brake and the spacer for such a brake The brake comprises two shoes lined with friction elements stressed by a clamping mechanism located between two first ends of the shoes, a fixed anchoring block located between the other two ends of the shoes, and a spacer (44) mounted in the vicinity of ... | 03/12/1985 |
| 4228876 | Internal shoe drum brakes The invention relates to internal shoe drum brakes having an automatic adjuster to maintain a substantially constant clearance between the brake shoes and the drum, when the brakes are released. A strut having a variable overall effective length acts betw... | 10/21/1980 |
| 4071123 | Automatic adjusting device for a drum brake A drum brake of the type comprising two brake shoes adapted to be spaced apart by a wheel cylinder. The distance between the ends of the shoes which cooperate with the wheel cylinder is automatically increased to compensate for the wear of the brake linin... | 01/31/1978 |
| 3941217 | Vehicle brake adjuster A vehicle wheel internal shoe drum brake has a pair of opposed brake shoes, an actuator acting between one pair of adjacent ends of the shoes and a two-part adjustable strut for adjusting the positions of the shoes relative to each other to compensate for... | 03/02/1976 |
