Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7228945 | Techniques for employing electric brakes to control movement of rotatable components A brake assembly includes a mounting plate, pressure members disposed in a substantially coplanar manner relative to the mounting plate, and electric actuators mounted to the mounting plate. The electric actuators are configured to selectively move the pressure memb... | 06/12/2007 |
| 7150343 | Shoe brake assembly, in particular for rail vehicles A shoe brake assembly for a rail vehicle including a bogie connected with the rail vehicle. The assembly also includes a wheel having a wheel web and radially inward-facing surfaces on opposite sides of the wheel web. Also included are at least two brake pads adjace... | 12/19/2006 |
| 4895227 | Spring brake unit and its application to a braking system Braking unit for vehicle, of the type comprising an axial actuating helical spring maintained in release position, against its elastic reaction force, through a screw-nut system rotatively driven by an electric motor, the spring acting upon the brake thro... | 01/23/1990 |
| 4573553 | Disc brake Disc brake for rail vehicles having a brake clamp (7) located in one plane and having two brake levers (4) having their central portions connected by a pull rod (5). The latter is formed with a rotatable threaded spindle (9) as a stay, which spindle is ro... | 03/04/1986 |
| 4480725 | Spot type brake with floating caliper A spot type brake having a disc or preferably ring brake member comprises a pair of brake pads on opposite sides of the brake member and a caliper with a hydraulic actuating unit for clamping the brake pads into engagement the brake member along a braking... | 11/06/1984 |
| 4237791 | Radial axle railway truck disc brakes A railway truck has a pair of radial axles with journal bearings at their ends and an adaptor mounted on each journal bearing and arranged to support the truck framing for steering movements of the respective axles with respect thereto, rigid links connec... | 12/09/1980 |
| 4238006 | Radial axle truck disc brakes A radial axle railway truck is provided with a disc brake system compatible with the radial axles comprising a single disc at the center of each axle adapted to be frictionally engaged by opposing shoes of a disc brake mechanism, the disc brake mechanism ... | 12/09/1980 |
