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Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 4327541 | Universal lawn spreader attachment for lawn mowers A universal spreader comprising a hopper; a cable by which the speading of fertilizer/chemical/seed/pesticide/etc., in the hopper may be inititated or terminated; a rotatable, driven agitator which distributes and controls the amount of the fertilizer; an... | 05/04/1982 |
| 4323136 | Movement stopping safety device for agricultural machine An agricultural machine has at least one movable tool, such as a cultivating rotor, mower or raking member, spreader disc, or other driven member such as a tractor wheel or freely rotatable roller, which parts are interrupted in movement by a protective m... | 04/06/1982 |
| 4300781 | Roller skate braking system A variable, easily actuated braking system for roller skates. A fixture carrying a hinged brake pad support is mounted on a conventional roller skate with the pads movable between a spring-assisted disengaged position and a sleeve and cable actuated engag... | 11/17/1981 |
| 4276962 | Caster brake for stretcher or the like An improved system for actuating wheel engaging ring brakes for a hospital stretcher, bed, or the like. The brake includes an elongated rotational member extending longitudinally along the stretcher to actuate pivot arms adjacent one front wheel and one r... | 07/07/1981 |
| 4275895 | Roller skate brake An improved roller skate braking apparatus for applying frictional braking action to the rear wheels of modern roller skates. Insertable brake linings are held in a brakeshoe that is forced against the rear surface of the rear roller skate wheels by means... | 06/30/1981 |
| 4271933 | Wheelchair brake attachment A wheelchair with two large rear wheels, two swiveling front wheels and an open front has handgrips located vertically above the two rear wheels. A connecting rod pivoted to a handle attached to each of the handgrips extends downward to a plunger slidably... | 06/09/1981 |
| 4258831 | Brake mechanism for a hand operated lift truck A brake mechanism for hand operated lift trucks in which two brake shoes are pivotally mounted on the lower end of the handle assembly so that contact between one or the other shoe and the brake drum is accomplished by either upward or downward movement o... | 03/31/1981 |
| 4246984 | Safety apparatus for wheelchairs A safety apparatus that holds wheelchairs in place as they are being transported in a motorized vehicle such as a van. The apparatus includes a rigid shaft that extends from the floor of the vehicle to several inches above one wheel of the wheelchair. A f... | 01/27/1981 |
| 4216996 | Stabilizer for dumping vehicles A stabilizer system for a rear dumping vehicle, which system includes an independently operable stabilizing member mounted on each side of the vehicle chassis. Each stabilizing member is urged downward by the ram of a hydraulic cylinder against the tires ... | 08/12/1980 |
| 4179134 | Removable trainer handle and brake for skateboard A trainer handle and brake for removable attachment to a skateboard comprises a handle strut, a handle bar fastened to one end of the strut, a clamp secured at the other end of the strut for clamping the strut to the front end of a skateboard in upstandin... | 12/18/1979 |
| 4166519 | Skateboard brake The present invention is a brake for free-wheeling ground engaging vehicles, in particular skateboards. The brake includes a bracket which can be easily mounted to the bottom surface of the skateboard. Pivotally mounted to the bracket is a lever to which ... | 09/04/1979 |
| 4134599 | Runnerless roller sled An improved runnerless roller sled comprises a bed; a longitudinal, laterally flexible support member discontinuously attached to the bed beneath the bed center line; a front pair and a rear pair of roller wheels attached to the front and rear sections, r... | 01/16/1979 |
| 4128144 | Brake and wheel lock A brake for locking a dolly caster wheel against rotation in either direction; the brake including a pair of parallel, spaced apart jam rollers each of which is carried on a frame, the frame being movable by means of a single push button so to move both r... | 12/05/1978 |
| 4127282 | Skate board vehicle A skate board vehicle comprising a platform for supporting the user of the vehicle, and including front and rear wheel-and-axle supports in which at least one of the wheel-and-axle supports includes a supporting bearing block reciprocatingly supporting a ... | 11/28/1978 |
| 4094524 | Skate board braking and steering system A skate board including a body and a pair of trucks located fore and aft with a friction brake pivotally mounted with respect to the board body to bring a pair of brake shoes into engagement with each of two rear wheels of the rear truck. An operator arm ... | 06/13/1978 |
| 4088334 | Skateboard brake A brake is provided which is completely separate from the ground wheels of the skateboard. A ground engaging brake wheel is swingably supported relative to the skateboard so that it may be swung into rolling engagement with the ground and with the braking... | 05/09/1978 |
| 4084831 | Skateboard with control unit A skateboard having front and rear wheel assemblies and a control unit coupled with one of the assemblies for applying braking forces to the wheels of said one assembly. The control unit includes a frame having a pair of spaced sides, and means pivotally ... | 04/18/1978 |
| 4037852 | Skateboard braking method and apparatus This invention is a method, and apparatus for performing the method, for safety braking of skateboards wherein the method is practiced by the activation of a friction device to one pair of wheels of a skateboard in such manner that one using such a skateb... | 07/26/1977 |
| 4033433 | Body motion bicycle seat brake A body motion actuated, bicycle seat brake comprises a seat resiliently mounted on the seat tube of a bicycle such that at least the forward end of the mounting member may be deflected downwardly by the action of a rider shifting his weight forwardly rela... | 07/05/1977 |
| 4029311 | Invalid walker with brakes An invalid walker comprises a lightweight, rigid frame having improved steerability derived from a combination of uniquely steerable front casters having upwardly and forwardly slanted swivel shafts together with non-swiveling rear wheels that are indepen... | 06/14/1977 |
| 4027890 | Skateboard with brake A pair of upright post-like brake shoes extend down through apertures in a skateboard body member in slidable relation directly over a pair of the wheels, and the shoes are secured at their upper ends to a top cross plate arranged to be pushed downwardly ... | 06/07/1977 |
| 4018449 | Automatic braking device for nesting cart A cart having a spring biased wheel lock, handle actuated release means for the lock, automatic lock release means actuated by a nested cart, and an intercart coupling means.... | 04/19/1977 |
| 4003582 | Skate board wheel brake assembly A skate board wheel brake assembly is shown having a foot activated, resilient brake arm secured near the rear end of a skate board with the arm having a first portion having brake shoes thereon and formed to be in close proximity to the rear wheels of th... | 01/18/1977 |
| 3963258 | Material handling vehicle A material handling vehicle having a deadman brake resiliently suspended from a load receiving receptacle of the vehicle. Brake shoes of the brake normally frictionally engage center wheels of the vehicle and restrain the vehicle from movement. Grasping o... | 06/15/1976 |
| 3950005 | Brake apparatus for a manually propelled material handling vehicle A manually propelled material handling vehicle comprising a vehicle frame, at least one wheel carried by and supporting the frame, and an elongate, rearwardly extending handle bar carried by the frame remote from the wheel and adapted to be gripped by an ... | 04/13/1976 |
