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A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 7401765 | Winching and drawing machine A winching and drawing machine comprises a drive shaft for driving a load sheave, a pressure receiving member fitted onto the drive shaft, brake plates installed in contact with the pressure receiving member and fitted onto the drive shaft, a pawl wheel interposed b... | 07/22/2008 |
| 7377485 | Replacement motorized drive unit for boat lifts A three-phase drive motor is utilized to operate a boat lift. In one example, a drive motor arrangement for replacing manual drives on an existing boat lift winch shaft comprises a worm gear box with a worm driven by an integrally mounted motor on the worm gear box.... | 05/27/2008 |
| 7344121 | End surface gear-type overload protection device for manually operated hoists An end surface gear-type overload protection device for manually operated hoists that utilizes a disc-shaped spring to control tension such that when the gears are in a leftward rotation and engagement, operation continues normally. However, during rightward rotatio... | 03/18/2008 |
| 7222700 | Roller disk brake for a winch A brake mechanism having a motor output shaft outputting a driving torque in a power-in and a power-out direction. A camming device operably couples the output shaft to a drive shaft for fixed rotation. A one-way clutch operably couples the drive shaft and a brake d... | 05/29/2007 |
| 7159852 | Manual marine winch internal gearing A manual swivel winch of the present invention includes internal drum gearing. The winch has a pair of spaced side plates, a rotating drum supported between the side plates, an internal drum gear coaxially mounted with the rotating drum, and a pinion drive gear enga... | 01/09/2007 |
| 7128307 | Manual marine winch with compound handle A manual swivel winch includes safe loading mechanism. The winch has a pair of spaced side plates, a rotating drum supported between the side plates, a drum gear coaxially mounted with the rotating drum, a pinion drive gear engaging and rotating the drum gear, and a... | 10/31/2006 |
| 6966545 | Chain block A chain block with a drive motor (2) with a motor shaft (11), which is connected at the take-off side via a slip clutch (50) to a transmission input shaft (14), having a first gear (18a) and mounted in a housing (1) b... | 11/22/2005 |
| 6767004 | Replacement motorized drive unit for boat lifts A drive motor arrangement for replacing manual drives on an existing boat lift winch shaft comprises a worm gear box with a worm driven by an integrally mounted motor on the worm gear box. A worm gear is mounted on a tubular cross shaft extending outwardly on opposi... | 07/27/2004 |
| 6686629 | SOI MOSFETS exhibiting reduced floating-body effects Disadvantages of the floating body of a SOI MOSFET are addressed by providing a pocket halo implant of indium beneath the gate and in the channel region of the semiconductor SOI layer of the MOSFET. Also provided is the method for fabricating the device.... | 02/03/2004 |
| 6659430 | Winch having internal clutch mechanism A winch comprises a drum rotatably mounted on a housing for winding a cable thereupon. A motor is attached to the housing, the motor supplying torque through a motor shaft. A special stage of planetary gears is mounted to the housing for transmitting torq... | 12/09/2003 |
| 5970906 | Motion compensation winch A motion compensation winch has a number of operating modes to launch and recover a boat and take into account wave movement. The winch has a cable drum for winding a cable thereon, a secondary gear reduction to rotate the drum, a primary gear reduction b... | 10/26/1999 |
| 5570872 | Free-rotation control apparatus of hoist and traction machine In a hoist and traction machine including a free rotation control apparatus, a free-rotation spring 19, for urging an operating handle 18 toward a driving member 8 and also urging the driving member 8 in the brake releasing direction, is interposed betwee... | 11/05/1996 |
| 5398911 | Winch assembly A winch assembly (10) includes a first transmission assembly rotatably connecting a motor (11) to a winch drum (20) comprising clutches (12, 16) adapted to rotatably engage an output shaft (13) of the motor (11) to a winch drum shaft (19) of the winch dru... | 03/21/1995 |
| 5002259 | Power winch system A power winch is described which includes drive means with an output shaft, lock means to prevent reverse rotation of the shaft and a drum clutch assembly. The drum can be selectively engaged with or disengaged from the drum shaft. The lock means prevents... | 03/26/1991 |
| 4909482 | Vehicle winch with retractable hitch The invention relates to a winch for a vehicle which is compact enough to be located at the rear of the vehicle without causing due limitation to the cross country ability of the vehicle and yet at the same time, provides a reliable winch for drawing a ve... | 03/20/1990 |
| 4819913 | Lever type hoisting machine A lever type hoisting machine capable of easily and securely pulling down a lower hook in no-load state. An operation wheel is rotatably supported in contact with a drive shaft and a pressure drive wheel, and an inside collision part and an outside collis... | 04/11/1989 |
| 4623124 | Portable hydraulic power unit A hydraulic power unit includes an engine and a pump mounted to a portable frame having an integral fluid reservoir for circulating the hydraulic fluid. Detachably mounted to the frame is a multiple speed winch. The fluid reservoir within the frame compri... | 11/18/1986 |
| 4512555 | Idling device for lever hoist An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave winding-up thereabout a chain or rope for a load, an operating lever roc... | 04/23/1985 |
| 4508318 | Electric hoist An electric hoist includes an electric motor, a driving shaft connected to a rotor shaft of said electric motor, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear ... | 04/02/1985 |
| 4502667 | Electric hoist An electric hoist includes an electric motor, a driving shaft connected to a rotor shaft of said electric motor, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear ... | 03/05/1985 |
| 4496136 | Hoist A hoist includes a shaft driven by external force, a driving shaft connected to the shaft, a reduction gear train for transmitting rotation of the driving shaft to a load sheave, and a mechanical brake assembly in the reduction gear train. According to th... | 01/29/1985 |
| 4483519 | Idling device for lever hoist An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave winding-up thereabout a chain or rope for a load, an operating lever roc... | 11/20/1984 |
| 4479635 | Idling device for lever hoist An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably d... | 10/30/1984 |
| 4474360 | Idling device for lever hoist An idling device is able to bring a lever hoist into an idling condition including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably d... | 10/02/1984 |
| 4471946 | Idling device for lever hoist An idling device is able to bring into an idling condition a lever hoist including a change gear provided on driving member threadedly engaged on a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably d... | 09/18/1984 |
| 4469308 | Lever hoist A lever hoist comprises a change gear provided in a driving shaft for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change ge... | 09/04/1984 |
| 4468005 | Lever hoist A lever hoist comprises a change gear for driving a sheave for winding-up a chain or rope for a load, an operating lever rockably driven by a hand, winding-up and winding-off driving pawls engageable with teeth of the change gear and changeable in respons... | 08/28/1984 |
| 4456227 | Dual-handled winch A dual-handled manual winch has a ratchet wheel meshing constantly with a pawl and which is automatically frictionally locked to a drive pinion for the winch drum when the drum starts to overrun. The drive pinion is threaded into a drive shaft on the ends... | 06/26/1984 |
| 4420144 | Manual hoisting and pulling apparatus A hand hoist or pulling apparatus including a drive clutch assembly, and a drive shaft and transmission gears associated with the assembly for pulling a chain on a load sheave by oscillating a lever. A holding member and a stop lever for preventing the me... | 12/13/1983 |
| 4348011 | Hoist with improved overload protection A hoist having an overload protection device is provided with a locking mechanism between a hoist body and a disc hub at a mechanical brake provided at the hoist body, the locking mechanism utilizing forward screwing of a driving member forming part of th... | 09/07/1982 |
| 4215850 | Winch A winch includes a direct current reversible motor operable to drive a gear train to wind or unwind cable from a drum and also includes first and second clutch mechanisms in the gear train that provide respectively (1) internal loading of the winch to pro... | 08/05/1980 |
| 4187936 | Winch assembly with anti-fallback clutch A winch assembly (11) comprises a rotary input shaft (15) connected to a pair of first and second gears (21,22) for rotating the gears in opposite directions. First and second friction clutches (23,24) are adapted to selectively connect a rotary output sh... | 02/12/1980 |
| 4088306 | Rope or cable winch A winch for coiling rope or wire having a rope or wire-supporting drum mounted for free rotation, an off-drive shaft mounted axially to the drum, a clutch for engaging the drum to the shaft, a driving motor, a driving shaft rotatable by the motor and a ge... | 05/09/1978 |
