Caster Guard Patents (Class 16/18CG)
  • Patent number: 6125504
    Abstract: A universal caster cover that can be used with just about any caster used on furniture such as chairs and tables is made of a flexible material, such as plastic. The cover has an end that may be opened to place the cover around a caster, and then sealed to close the opening. An adhesive tape is mounted on the inside top of the cover and is used to attached the cover to a non-rolling part of the caster. The cover protects objects such as a person's shoes or furniture from being damaged when the cover engages the shoe or furniture when the chair or other object on casters is moved.
    Type: Grant
    Filed: September 21, 1998
    Date of Patent: October 3, 2000
    Inventor: Tammy L. Richards
  • Patent number: 6076641
    Abstract: A wheeled upright luggage case having oversized wheels for improved rolling movement. The luggage case has a pair of wheels that are oversize in proportion to the body of the case. The oversize wheels are rotatably mounted in fender assemblies disposed on the outsides of the body of the case, so that the oversize wheels do not detract from the cargo capacity of the case. The wheels are mounted to protrude a specified relational distance from the bottom, or the back and the bottom, of the case to permit the case to be rolled while tilted at a wide variety of angles and to easily be pulled up stairs or curbs.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: June 20, 2000
    Assignee: Samsonite Corporation
    Inventors: Paul Kinzer, Amy Wolf, William L. King, Ryan Sullivan, Peter Twarog, Peter Ward
  • Patent number: 5924165
    Abstract: A caster foot assembly for use with an appliance such as a wet/dry vacuum is disclosed. The caster foot assembly comprises a body; at least one vacuum accessory securing post in the body; and a caster receptacle in the body, wherein the securing post and the caster receptacle vertically overlap within the body to lower the center of gravity of the appliance. Furthermore, a portion of the top surface of the securing post is angled to facilitate the securing of accessories to the caster foot assembly.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: July 20, 1999
    Assignee: Emerson Electric Co.
    Inventors: Joseph T. Gierer, John F. Moody, Kiyoshi Hoshino, Stuart V. Holsten
  • Patent number: 5873144
    Abstract: A one-piece roll guard (10) having two half segments (12, 14) connected by an integral hinge (16) for protecting a caster (100) wheel by clearing obstacles away from its rolling path. The two segments of the roll guard (10) are closed and secured together around the caster wheel with a locking tab (18a) and matching locking slot (18b) integrally formed in the two segments. The roll guard is formed with a weighted lower lip (26) to improve stability by lowering the center of gravity of the roll guard (10).
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 23, 1999
    Assignee: Innovative Research Labs, Inc.
    Inventors: Bradley J. Tupper, James Benson
  • Patent number: 5702117
    Abstract: A trolley intended for a medical apparatus and comprising wheels for displacement on a floor surface. In order to push aside cables running on the floor of the working environment, the wheels are provided with a cable pusher having a pushing edge. The plate constituting the cable pusher is provided with approximately triangular cut-outs which receive stationary cams. If no external forces act on the plate, it is pressed onto the cams by springs in such a manner that the apex of the triangular cut-outs bears on the cams. The springs are proportioned so that an obstructing cable is pushed aside by the plate; however, when this plate comes into contact with a fixed obstacle, for example a threshold, the plate is pushed upwards. Damaging of the cable pusher is thus avoided and the risk of overturning of the trolley is reduced.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: December 30, 1997
    Assignee: U.S. Philips Corporation
    Inventor: Frans E. N. Geelhoed
  • Patent number: 5655259
    Abstract: An improved caster assembly for moving heavy loads upon a caster platform. This caster assembly is less prone to breakage than conventional caster assemblies, and additionally incorporates a safety lid for reducing the risk if injury to workers. This caster assembly is comprised of a box frame member within which a caster wheel is rotatably mounted. The box frame member is coupled in an offset position to a rotatable platform, which allows the caster assembly to rotate with the direction of force applied to a load moving across a caster platform in which it is mounted. This caster assembly is designed to couple into cavities present in existing caster platforms. The safety lid serves to close any gaps present in these platform cavities, thereby reducing the likelihood of a worker's foot or hand becoming caught in the cavity and injured by an approaching heavy load.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: August 12, 1997
    Inventor: Dick J. Look
  • Patent number: 5615450
    Abstract: A skirt system for caster wheels to prevent a rolling caster from colliding with floor debris. A skirt assembly is fastened to a caster having a swiveling housing in which is mounted a caster wheel on an axle. The skirt thus swivels with the caster. The skirt assembly includes a circular skirt housing fastenable to a caster housing and having a central opening through which the caster wheel extends. Skirt material, such as brush fibers, is secured in a split ring which is removably held to the skirt housing by ring spring tension. The skirt may extend entirely around the caster or a segment may be portioned in front of the caster wheel.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: April 1, 1997
    Inventor: Robert Butler
  • Patent number: 5603140
    Abstract: A device for protecting the leg or corner of a piece of furniture from damage is disclosed. The device includes an elongate shield member that encompasses at least the lower front portion of the leg or corner of a piece of furniture. A foot member, for positioning under the leg or corner of the furniture, is attached to the lower end of the elongate shield member forming a generally right angle therewith. The elongate shield member includes a series of breakaway or cutaway lines that comprise linear zones of structural weakness such that portions of the shield member can be readily broken off to enable the shape of the device to be altered thereby accommodating the shape of the leg or corner of the furniture to which it is applied.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: February 18, 1997
    Inventor: Stephen Pryce
  • Patent number: 5371920
    Abstract: A safety system of roll guards protecting an anesthesia machine's wheel assemblies from being obstructed or snagged by objects lying upon a floor surface or dangling above the floor surface that are in the path of movement. Each roll guard is loosely connected to part of the wheel assembly or anesthesia machine, and has a vertically upstanding cylindrical portion whose bottom rests upon the floor surface. The cylindrical portion surrounds and freely receives therein the wheel assembly, and has a top portion closed by a cap.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 13, 1994
    Inventor: Donald Rainville
  • Patent number: 5323887
    Abstract: A luggage case has a bottom wall supported on four swivel wheels that permit the luggage case to be turned in any direction about a vertical axis. Two of the swivel wheels are part of a leading wheel assembly, and two of the swivel wheels are part of a trailing wheel assembly. Each wheel assembly has a one-piece molded plastic base including an elongated plate extending transversely of the bottom wall of the luggage case and attached thereto, and a pair of downwardly open protective cups surrounding respective swivel wheels. A retractable handle system includes a fixed portion mounted on the top wall of the case, and a movable portion having a handle that may be extended and tilted upwardly for pulling the case along the ground.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: June 28, 1994
    Assignee: York Partners, L.P.
    Inventors: Paul V. Scicluna, Marvin Schwartzstein
  • Patent number: 5303449
    Abstract: A single leg caster assembly is disclosed. The assembly includes a wheel retaining hub and axle which support a bearing and wheel. A portion of the axle and a portion of the wheel retaining hub act as thread guards to inhibit thread from becoming tangled on the axle and in the bearing.
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: April 19, 1994
    Assignee: Albion Industries, Inc.
    Inventor: Dale A. Gray
  • Patent number: 5274879
    Abstract: 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 parts axially delimiting a space wholly containing the body and an upright pivot pin having a lower end projecting into the body offset from the shaft axis along a pivot axis. Bearings generally level with and closely juxtaposed with the shaft axis in the body supporting the pivot pin in the body for rotation therein about the pivot axis. A shield ring generally centered on the shaft axis wholly surrounds the body radially relative to the shaft axis, has axially opposite end edges closely juxtaposed with the respective wheels, and is formed with a hole traversed by the pivot pin.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: January 4, 1994
    Inventor: Berthold Haussels
  • Patent number: 5173990
    Abstract: Furniture, or bed support and caster protector device, consisting of a sleeve or cylindrical body constructed of a generally resilient material having a hollow center and adapted to circumvallate the bed support and the supporting caster thereof, a radially disposed cut in the sleeve extending along at least one radius thereof to provide accessing of the sleeve around the bed support and caster, and also to facilitate its removal therefrom, and the sleeve having a longitudinal dimension being slightly grater in distance than an overall distance between a bed rail, disposed at an upper extremity of the bed support, and a support plane or floor for support of the caster, to effect a slight compression of the sleeve due to its resilient characterization and tending to retain the sleeve in locus between the bed rail and the support plane or floor; the sleeve has a lower section with a larger diameter at the lower section and has an upper section with a smaller diameter to provide more distribution of the slight c
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: December 29, 1992
    Inventor: Raymond Owen
  • Patent number: 5170528
    Abstract: An obstacle moving device for a caster wheel is made of an electrically insulating material and is of two identical halves. The device is assembled without moving, stabilizing or disassembling the caster wheel by placing the halves on opposite sides of the caster wheel and then securing them together. A pair of roller assemblies inside the device abut the caster wheel so that rolling motion of the caster wheel pushes the device across the floor. Any obstacle encountered by the device is pushed along the path of movement of the wheel.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: December 15, 1992
    Inventors: John J. Navar, Thomas R. Navar
  • Patent number: 5163539
    Abstract: An easily detachable and/or assembleable and/or longstandingly endurable luggage roller is provided. The roller includes a top plate mounting, or rotatably mounting, thereunder a hollow mounting medium having two dovetail-shaped wings having a lower width larger than an upper width, a shaft passing through the two wings for rotatably mounting a rolling medium in the hollow mounting medium, and two decorating pieces respectively engaging with two wings.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: November 17, 1992
    Inventor: Fu-Hsiung Yang
  • Patent number: 5134753
    Abstract: A roller assembly or caster for an article of luggage has a casing or housing set into the bottom wall of the article and a stirrup affixed to an upper wall of that housing in which a roller is rotatable. The roller projects through an opening in a generally spherical convex cover and projects in part beyond this cover so that the cover will limit impact of obstructions against the stirrup and roller and will shield the interior of the housing from the incursion of foreign materials. The convex cover is affixed to the stirrup and, when the latter can swivel, swivels together therewith.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: August 4, 1992
    Assignee: Firma Sudhaus Schloss- und Beschlagtechnik GmbH & Co.
    Inventor: Richard J. Rekuc
  • Patent number: 5123143
    Abstract: A flexible tubular material to cover a castor. This castor cover has base edges (8) for resting against the floor, a hole (2) diametrically opposite base edges (8) to allow castor stem to pass through to furniture attachment, a slit (4) cut through invention's convex side from hole (2) to one base edge (8) for installation.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: June 23, 1992
    Inventor: David W. Carmack
  • Patent number: 5001808
    Abstract: A castor, which can efficiently absorb shock and the ball wheel of which can be alternatively received in or protruding beyond a cup-like shield thereof for positioning or moving. The caster comprises a sleeve which is secured to a hoop on the frame of a baby-walker for receiving a spring and a central shaft which comprises a ball wheel on the bottom. The sleeve comprises a Z-shaped track on its wall surface for the sliding and positioning therein of a lateral guide which is inserted therethrough and secured to the central shaft. A cup-like shield is secured to the bottom end of the sleeve to protect the ball wheel.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: March 26, 1991
    Inventor: Chin-Fu Chung
  • Patent number: 4800617
    Abstract: This invention relates to a castor positioning device and in particular to one including a positioning shell generally conical in shape and having a hole at the top and an open end at the bottom, an actuating member formed at the center with a threaded through hole and a hexagonal contour from which extends downwardly an engaging portion having a thin stopper at the bottom end thereof and a castor having on the top a vertical screw extending upwardly through the hole of the positioning shell and then engaged with the threaded through hole of the actuating member, whereby the invention is applicable to be mounted on machines with or without transverse rods at the bottom frame thereof.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: January 31, 1989
    Inventor: Tsuang H. Yeh
  • Patent number: 4759097
    Abstract: A wheel bracket assembly includes two separate, platelike bracket parts which each have a noncircular opening therein and are disposed on opposite sides of a wheel in angular alignment. The ends of the axle for the wheel extend through the noncircular openings and the bracket parts are fixed against axial and rotational movement with respect to the axle. A method of making the wheel bracket assembly includes the steps of stamping out from at least one metal plate the two bracket parts which are substantially mirror images of each other and have the noncircular opening therethrough, placing the bracket parts in angular alignment on opposite sides of the wheel so that the ends of the axle extend through the noncircular openings, and upsetting each end of the axle to retain the bracket parts in place and so that the material of the axle flows to fill the noncircular openings in the bracket parts and thereby prevent relative rotation of the bracket parts.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: July 26, 1988
    Assignee: Standex International Corporation
    Inventor: John W. Black
  • Patent number: 4752986
    Abstract: According to the preferred form of the invention, a pair of thin wheels is rotatably mounted in the bottom of the body of a caster or other load supporting wheeled device in a bilaterally symmetrical array. Each of the wheels has a downwardly facing outer terrain-engaging surface in the general form of a frustocone, and an upwardly facing inner annular bearing surface which is opposed by a complementary annular bearing surface on the bottom of the body. Preferably one or more antifriction washers are interposed between the wheel and body bearing surfaces. This arrangement provides large bearing surface areas which are located directly above the lowermost apex of the frustoconical terrain-engaging surface so that direct vertical loading is applied through the bearing surfaces to the terrain-engaging footprint of each wheel, thereby avoiding cantilever action, avoiding any need for rollable bearings, and permitting the wheels to be very thin and of extremely low profile.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: June 28, 1988
    Inventors: Bernard W. Rivkin, Wesley P. Yenerich
  • Patent number: 4700430
    Abstract: A support for an article of furniture is readily interchangeable between having a glide exposed to the ground and a caster exposed to the ground with the glide being stored within a shroud. The furniture remains level in either embodiment since the total length of the support will stay the same. Minor adjustments in the length of the support are made by rotating the shroud.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: October 20, 1987
    Inventor: William Raftery
  • Patent number: 4653710
    Abstract: A support trolley comprises a central leg pillar and at least three legs radiating therefrom, each supported at its outer end by a respective castor wheel assembly. The inner end of each leg joins the lower end of the leg pillar by a sliding engagement of complementary splined surfaces, so that assembly or disassembly is easily effected. The outer end of each leg has a downwardly facing recess which receives the upwardly directed pintle of a respective castor wheel assembly, that pintle being tubular and of resilient material.
    Type: Grant
    Filed: June 20, 1985
    Date of Patent: March 31, 1987
    Assignee: F. F. Seeley Nominees Pty. Ltd.
    Inventor: Maxwell Dickison
  • Patent number: 4649595
    Abstract: A resiliently mounted dual wheel caster is provided which includes an outer body including a hub with a transverse aperture, and an inner body member pivotally mounted to the outer body and mountable to an article to be supported by the caster. A resilient shock absorbing member is disposed between the inner body and the hub of the outer body. An axle is disposed through the aperture in the hub and resilient wheels are mounted one each end of the axle. The resilient wheels and the resilient member act in series to effectively absorb shock encountered by irregularities in travelled terrain and prevent such shock from reaching the supported article.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: March 17, 1987
    Assignee: Shepherd Products U.S. Inc.
    Inventor: Robert M. Shane
  • Patent number: 4621849
    Abstract: A bumper for the wheel well of a dolly or cart consists of a single element molded of flexible plastic material to include a cap, a lock and a hinge connecting the cap to the lock. The wheel well is adapted to receive a swivel shaft that extends through an aligned aperture in the cap to limit movement of the bumper. Further, movement of the bumper is also restricted by cooperation of the lock and the mounting bracket of which the wheel well is a part. The hinge permits the lock to be reversely bent from a first position in which the bumper is molded to a second position where the lock is captured between the wheel well and ears of the bracket that mounts the wheel well to the cart.
    Type: Grant
    Filed: November 13, 1984
    Date of Patent: November 11, 1986
    Assignee: Shop-Vac Corporation
    Inventor: Robert C. Berfield
  • Patent number: 4555123
    Abstract: A cart having a basket and wheeled frame with a pair of flared protective flanges. The protective flanges attach to the lower section of the wheeled frame and extend rearwardly, downwardly and laterally outwardly to prevent the rear wheel castors of the cart from inadvertently causing damage to adjacent objects during routine use and to shield the rear wheel castors of the cart from lateral and upwardly directed impacts.
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: November 26, 1985
    Inventor: Houston Rehrig
  • Patent number: 4457045
    Abstract: 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 arrangement gives improved support capacity and swivellability.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: July 3, 1984
    Inventor: Jack P. Kegg
  • Patent number: 4168558
    Abstract: A wheel mount adapted to be used on the bottom side of a suitcase to permit wheeling the latter. The mount is formed so as to minimize the likelihood of damage to the mount and to the wheel which it supports. The mount is elongated in a longitudinal direction and its sidewalls are slantingly disposed relative to the wheel in order to minimize damage when struck by another object. One form of the invention is made from a block of plastic or the like and other forms are made of formed sheet metal.
    Type: Grant
    Filed: March 13, 1978
    Date of Patent: September 25, 1979
    Inventor: Brooks Walker
  • Patent number: 4025099
    Abstract: A cable protecting device is attached to the wheel yoke of a cart equipped with swivel wheels. The device has a fender strap located forwardly of the cart wheel with same being connected to the wheel yoke at its upper end and further supported by a pair of braces at its lower end. A cable lifting plate is hinged to the lower end of the fender and extends to the floor level so that its leading end may receive and lift a cable encountered by the cart.
    Type: Grant
    Filed: January 2, 1976
    Date of Patent: May 24, 1977
    Inventor: Herbert H. Virden
  • Patent number: 3964124
    Abstract: A caster utilizing mounting structure, leg structure rotatably mounted on the mounting structure, and a wheel rotatably mounted upon the legs wherein the relatively movable parts of the caster are sealed against the entrance of foreign matter by means of a resilient synthetic material cover. In the method of constructing a caster in accord with the invention components thereof are coated with the coating material, such as by dipping, and the coating material, after curing, is severed at the desired locations to form sealing edges between relatively movable components. In a preferred method of forming the caster, mandrels having a configuration similar to the final caster components may be employed, however, it is within the scope of the invention to use the caster components themselves for molding purposes wherein the sealing material is later severed at the desired locations.
    Type: Grant
    Filed: December 30, 1974
    Date of Patent: June 22, 1976
    Assignee: Midwest-Precision Corporation
    Inventor: Thomas A. Crawford