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| Number | Title | Issue Date |
| 7308730 | Base member for swivel caster A base member for swivel caster comprises a fixed base, a rotation base and a hollow staff. The fixed base includes a ring member, and a plurality of first raceways lathed in an inward surface of the ring member. A support cavity is defined through a center of the r... | 12/18/2007 |
| 7228594 | Fluid levitating caster integrating load lifting device A fluid levitating caster lifts a heavy load “(17)” off a floor “(18)” with near friction-less-ness for transport has integrated a load lifting device. This extra rise height “(ER)” lifting feature accommodates moving loads “(17)... | 06/12/2007 |
| 7156769 | Annular member and drive device comprising the annular member An annular member intended to form a part of a bearing unit includes a first portion which radially externally forms a race for receiving at least one row of balls and radially internally is provided with teeth and forms a gear rim. The first portion is provided wit... | 01/02/2007 |
| 7146683 | Articulated caster An apparatus for supporting an object includes a base assembly and at least three wheels pivotally attached to the base assembly. A pivot arm includes a flange plate at an upper end for attachment to the object. An opposite lower end of the pivot arm includes a univ... | 12/12/2006 |
| 7077369 | Stable tripod for telescope The present invention provides a stable tripod stand for sensitive optical devices such as telescopes and the like. The tripod may be moved around on wheels which are coupled to casters and when positioned may be secured to the ground to provide an adjustable and hi... | 07/18/2006 |
| 7017228 | Pneumatic locking swivel caster A pneumatic locking swivel caster comprises a swivel caster and a locking device which may be activated by fluid pressure. The swivel caster may be a dual wheel swivel caster. An improved theatrical prop or scenery element comprises a pneumatic locking swivel caster... | 03/28/2006 |
| 6880203 | Independently rotatable, split tread, single wheel assembly An independently rotating, split tread wheel assembly includes a pair of disks each having an outer tread formed of rubber or polyurethane compounds and supported on the periphery thereof. Each disk includes a central opening that receives a ball bearing assembly. A... | 04/19/2005 |
| 6698060 | Caster structure A caster structure comprises a small wheel, a mounting plate, a roller bearing, a wheel frame, and a locating member. The wheel is fastened pivotally with the wheel frame which is fastened with the underside of the mounting plate by the locating member in... | 03/02/2004 |
| 6604258 | Caster roller for cargo handling system A cargo handling system for a narrow body freighter aircraft employs caster rollers. The cargo handling system includes a horizontal panel disposed along a deck surface of the aircraft, and a plurality of caster rollers having a narrow body roller plane h... | 08/12/2003 |
| 6550101 | Hydraulic constant force caster A caster system wherein a constant force is applied to the caster for load support purposes. A plurality of casters are interconnected by a fluid conduit system and each caster includes an expansible chamber motor for adjusting the vertical position of th... | 04/22/2003 |
| 6431566 | Safety driving equipment for toddler's scooter The invention herein relating to a safety driving equipment for a toddler's scooter is mainly comprised of a driving triangular base with a long extended wheel arm at the end opposite to the driving wheels. A universal auxiliary wheel is mounted at the en... | 08/13/2002 |
| 5274879 | Two-wheel caster with shield ring A two-wheel furniture caster has a body, a shaft projecting horizontally through the body along a shaft axis and having opposite ends projecting axially oppositely from the body, respective wheels rotatable on the ends of the shaft and having outer tread ... | 01/04/1994 |
| 5103530 | Hub and wheel assembly with shock absorber A hub and wheel assembly for light load vehicle including baby carriages, infant strollers, wheelchairs and the like, the assembly having tandem wheels and a shock absorbing member in a trailing link suspension configuration. The assembly includes a wheel... | 04/14/1992 |
| 5097565 | Cargo caster bearing assembly A caster bearing assembly attachable to a surface for facilitating the movement of a body along a roller plane located above the surface. The caster bearing assembly (10) includes a base part (16) mounted to the surface, a top part (18), bearings (20), an... | 03/24/1992 |
| 4779304 | Caster having a rotary yoke locking mechanism A caster, for example for mounting the wheels of a baby carriage has a fixed bracket (14), a rotary yoke (15) rotatably supported by the fixed bracket (14), and a wheel (17) rotatably supported by the rotary yoke (15) with the aid of an axle (16). The rot... | 10/25/1988 |
| 4765021 | Heavy duty caster A heavy duty caster for use on machines, heavy conveyances and the like has a plate the underside of which has a circular socket for a disc-shaped first thrust bearing element which is rotatably held in the socket against appreciable axial movement by a r... | 08/23/1988 |
| 4726596 | Shopping cart An improved shopping cart having a pivoted platform mounting a pair of spaced caster assemblies. The platform has a pivot to permit each caster assembly to pivot independent of the other assembly to substantially continuously engage a supporting surface t... | 02/23/1988 |
| 4669146 | Caster A caster includes a mechanism that allows a wheel axle to shift rearward through a distance corresponding to the previous lag of the axis of rotation of the wheel behind the wheel bearing axis when the caster reverses its direction of advance. In a first ... | 06/02/1987 |
| 4624028 | Omnidirectional rolling support having castering induced by rotational resistance A rolling support system has a pair of wheels mounted for rotation about a first axis with bearings that have a first resistance to rotation of the wheels. A stem assembly includes a portion to which the first axis is attached and further includes a thrus... | 11/25/1986 |
| 4457045 | Castor having inwardly cambered wheels and a retainer plate A swivel castor comprises a pair of wheels (17) inclined inwardly to the upstanding swivel axis (11), such that the bottom of the wheels are spaced apart further than the tops. The swivel axis is offset forwardly of the wheel rotational axes. The arrangem... | 07/03/1984 |
| 4107817 | Swivel assembly An improved swivel assembly for a shopping cart, stroller or the like. The swivel assembly comprises a yoke having a vertically extending opening therethrough into which an end of a cart leg or the like is journaled for rotation of the swivel assembly aro... | 08/22/1978 |
| 4076266 | Brake assembly for skateboard The invention is a manually operated brake for a skateboard which is connected by means of a tether cable to either the front or rear truck, there being two or more alternative means by which the braking of the wheels may be implemented, and the braking c... | 02/28/1978 |
| 3967342 | Suspended swivel wheel arrangement for baby carriages and the like Tandem wheels mounted on a common axle are connected to a movable vehicle such as a baby carriage, stroller, wheelchair or the like in a configuration which permits maximum stability and freedom of motion. The axis of the wheels is pivotally attached and ... | 07/06/1976 |
