Bizarre Patents
User-operated amusement apparatus for kicking the user's buttocks
An apparatus including a user-operated and controlled apparatus for self-infliction of repetitive blows to the user's buttocks by a plurality of elongated arms bearing flexible extensions that rotate under the user's control.
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| Number | Title | Issue Date |
| 7291079 | Motorized front derailleur assembly with saver arrangement A motorized bicycle front derailleur assembly is provided with an arrangement to protect the motor in the event the chain guide is stuck in one of the shift positions. The motorized bicycle front derailleur assembly has a motor unit, a front derailleur and a motor l... | 11/06/2007 |
| 7101296 | Synchronous rear belt drive system for motorcycles and method of use A synchronous rear belt drive system for belt driven motorcycles and a method of altering the final drive ratio of such motorcycles utilizing the present rear belt drive system is disclosed. The present rear belt drive system provides a plurality of interchangeable ... | 09/05/2006 |
| 7011592 | Sprocket assembly for a bicycle A sprocket comprises a sprocket portion having a plurality of radially extending teeth, a first coupling portion extending from a first side of the sprocket portion and having a first coupling structure disposed on an inner peripheral surface thereof, and a second c... | 03/14/2006 |
| 6488603 | Freewheel for a bicycle A freewheel is provided for mounting a plurality of sprockets on an axle of a bicycle. The freewheel basically includes an inner tubular body, an outer tubular body coaxially mounted on the inner tubular body with a bearing assembly rotatably coupling the... | 12/03/2002 |
| 6319163 | Transport device in a packaging machine A transport device in a packaging machine includes a plurality of circulating transport chains which each travel over at least one chain wheel. In order to be able to adjust the transport device to differing formats for the bulk product and/or the packagi... | 11/20/2001 |
| 6305887 | Structure for mounting motor of planing machine A structure for mounting a motor of a planing machine includes a hollow base, an axle casing fitted in said base and provided with a spindle for connecting with a planing cutter, a first pulley arranged under said spindle so that a belt connects said firs... | 10/23/2001 |
| 6264575 | Freewheel for a bicycle A freewheel is provided for mounting a plurality of sprockets on an axle of a bicycle. The freewheel basically includes an inner tubular body, an outer tubular body coaxially mounted on the inner tubular body with a bearing assembly rotatably coupling the... | 07/24/2001 |
| 5860880 | Low normal bicycle derailleur which allows lateral movement of the chain guide toward the rear wheel in response to a force directed laterally towards the rear wheel A rear derailleur for a bicycle includes a base member for attaching the derailleur to the bicycle, a movable member for supporting a chain guide, a linkage mechanism coupling the base member to the movable member so that the movable member is capable of ... | 01/19/1999 |
| 5772547 | Bicycle crankset A bicycle crankset for mounting a plurality of chainrings includes a crank arm having a first end for mounting a pedal and a second end having a boss for mounting to a crank axle, a chainring retainer for supporting at least one of the plurality of chainr... | 06/30/1998 |
| 5518456 | Bicycle derailleur A bicycle derailleur operable by a control cable to shift a chain between a large gear and a small gear, includes a parallelogram link mechanism having a base member connectable to a bicycle frame, a support member, and a pair of pivotal links extending b... | 05/21/1996 |
| 5480357 | Freewheel assembly for bicycle A freewheel of a bicycle includes a number of sprockets engaged on a sprocket ring. An outer thread is formed in the outer portion of the sprocket ring for engaging with a lock nut. The lock nut includes a number of serrated teeth formed on one side surfa... | 01/02/1996 |
| 5380252 | Bicycle speed change assembly The following technical means is provided to achieve a chain shift operation with a minimum of the guide pulley travel distance, to improve speed change efficiency and operatability, and to prevent the speed change assembly from protruding sideward: At a ... | 01/10/1995 |
| 5378201 | Multi-geared bicycle transmission assembly comprising internal gear sets A transmission assembly for a bicycle which is able to achieve variations in rotational force and velocity through internal gearing mechanisms which require no variation in sprocket diameter. The transmission assembly includes a front and rear transmissio... | 01/03/1995 |
| 5205794 | Shift mechanism for bicycle A shift mechanism for a bicycle and the like wherein a chain is shifted from sprocket to sprocket by an operator controlling a lever to position a camming surface to direct a guide pawl to tilt a segment of one sprocket whereby the tilted segment aligns w... | 04/27/1993 |
| 4571219 | Bicycle transmission An automatic transmission system for a chain-driving vehicle includes a frame having a crank-driven sprocket and a drive axle with a drive wheel supported on the drive axle and a multi-speed sprocket assembly for driving the drive wheel. A continous chain... | 02/18/1986 |
| 4165048 | Positive feed A thread-supply arrangement for use in textile-manufacturing machines includes an accumulating drum which is mounted on a shaft and is to be selectively driven, together with other accumulating drums, when the shaft thereof is driven in rotation by an adv... | 08/21/1979 |
| 4075900 | Two-speed video recorder The specification discloses a video recorder having two recording speeds. The recorder includes a capstan for moving video tape past a recording head. A drive pulley is rotated at a predetermined drive speed. The pulley is movable between retracted and ex... | 02/28/1978 |
| 4062248 | Two-speed video recorder The specification discloses a video recorder having two recording speeds. The recorder includes a capstan pulley for moving video tape past a recording head and a drive pulley rotated at a predetermined drive speed. A speed change assembly is interconnect... | 12/13/1977 |
