In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7926624 | Cylinder block brake A cylinder block brake for a hydrostatic transmission or transaxle is provided. A pawl and return spring are located in a housing adjacent to a motor cylinder block. The pawl has a first, biased position where it is not engaged to the motor cylinder block and a seco... | 04/19/2011 |
| 7261378 | Cam lock for vehicle seating A locking apparatus for a moveable component of an aircraft seat. The locking apparatus includes a housing for being slidably received in a track, a first pair of opposed cams pivotally mounted in the housing, and a release member. The cams are moved between a lock ... | 08/28/2007 |
| 6726226 | Wheel stop device of a golf cart A wheel stop device of a golf cart includes a fixing seat, a connecting rod, a spring, a fixing ring, and a drive member. The fixing seat includes a main body, an outer jacket, and two opposite lugs. The connecting rod has a shank having a first end formed with a st... | 04/27/2004 |
| 6644443 | Transportation device, especially a wheelchair, with a braking system The invention relates to a device for transporting human beings, comprising a frame, at least one tire extending in a peripheral direction around a wheel with a certain amount of elasticity, and a braking system. The braking power of the braking system is... | 11/11/2003 |
| 6595332 | Brake A brake for retaining a mobile carriage on which storage facilities are constructed and having a slidable actuating assembly with a claw which engages a slotted member when the actuating assembly is depressed. The mobile carriage is mounted on a platform ... | 07/22/2003 |
| 6336528 | Braking device for a linear drive A brake device for a linear guide comprising a carrier body (1) which is movable on a guide rail (2) and incorporates brake shoes (10) which act on the guide rail (2), and a brake piston (8) which is arranged for displacement by a pressure medium in a bra... | 01/08/2002 |
| 6164420 | Multi-directional locking arrangement for a vehicle A locking arrangement for a vehicle in which a first locking element is non-rotatably connected with a vehicle wheel, and a triggerable second locking element is releasably engaged with the first locking element. The first locking element is a brake disk ... | 12/26/2000 |
| 5180036 | Cam operated rail clamping device This invention is a cam operated rail clamping device for preventing movement of a structure on a rail comprising a base, a vertically disposed post secured to and projecting upwardly from the base, a tube rotatably and slidably mounted on the post, an ai... | 01/19/1993 |
| 4452342 | Shaft braking mechanism utilizing non-permanent deforming brake shoe A braking mechanism for a rotating shaft includes a corrugated wheel keyed to the shaft. A polyurethane pad mounted on a spring-biased plunger contacts the wheel corrugations creating non-permanent mating formations in the pad. Thus, upon contact between ... | 06/05/1984 |
| 4296867 | Device for locking slewing portion of cargo crane A device for locking a slewing portion of a cargo crane relative to a stationary portion thereof, comprising stops arranged respectively on these portions of the crane, and appliances for holding these stops in contact with each other at locking. The stop... | 10/27/1981 |
| 3986458 | Power and free conveyor A train comprises a towing car and at least one free car connected to the towing car and having a car body. At least one of the free cars is a load-carrying free car, which comprises two pairs of guide rollers and carries a load suspended from the car bod... | 10/19/1976 |