Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7267639 | Compound bicycle exercising device A compound bicycle exercising device includes two foot pedals rotatably attached to a base, for being operated by users, two handle stems pivotally attached to the base, for being rotated by the users, and two rotary members secured to each handle stem. A spindle is... | 09/11/2007 |
| 7246550 | Pressure differential-driven engine A pressure differential-driven engine (10) includes an outer pressurizable enclosure (12). A pressure barrier plate (14) is disposed within the outer pressurizable enclosure and an actuator enclosure (16) is disposed adjacent the pressure... | 07/24/2007 |
| 7197968 | Screwdriver with adjustable device to limit transmitted torque A screwing tool with a device to adjust transmitted torque comprises a handle to introduce a torque to the device, which is borne in the hollow of the handle and a drive shaft as an output element of the torque. On the drive shaft inside the handle, two separate cou... | 04/03/2007 |
| 7105939 | Electrical generator having an oscillator containing a freely moving internal element to improve generator effectiveness An apparatus and method for providing electrical energy to an electrical device by deriving the electrical energy from motion of the device. In one embodiment, the inventive apparatus includes a novel kinetic electrical power generator (KEPG) consisting of an invent... | 09/12/2006 |
| 6769323 | Spring motor for generating electrical energy An engine (10) which can deliver mechanical work for an extended duration in comparison to the duration of energy input into the engine. The engine (10) includes a drive shaft (11) through which it delivers mechanical work. The drive shaft (1... | 08/03/2004 |
| 6361479 | Recumbent total body exerciser A recumbent apparatus for exercise and physical therapy providing a lower body workout, an upper body workout and cardiovascular conditioning, the apparatus comprising a frame having a forward end and a rearward end, the frame generally defining a longitu... | 03/26/2002 |
| 6349605 | Reciprocatable axial-to-rotor motor An axial-to-rotary motor includes a double acting pneumatic motor of piston-cylinder type. An endless drive belt extends over a first pulley, which is fixed mounted in relation to the pneumatic motor, and over a second pulley mounted spaced from the pisto... | 02/26/2002 |
| 6069420 | Specialized actuators driven by oscillatory transducers Actuators for power driven accessories for moving objects, such as vehicle power windows, windshield wipers, vehicle power antennas, power side view mirrors, catheter drivers, curtain moving machines, bi-directional rotary motors, thruster mechanisms that... | 05/30/2000 |
| 5701784 | Mechanism to convert angular reciprocal movements into intermittent unidirectional rotary movement There is provided in combination a first member and a second member movable in a reciprocal angular movement, and an articulation between the first member and the second member. The articulation comprises a shaft and a mechanism to convert the angular rec... | 12/30/1997 |
| 5620232 | Mechanism to convert angular reciprocal movements into intermittent undirectional rotary movement There is provided in combination a first member and a second member movable in a reciprocal angular movement, and an articulation between the first member and the second member. The articulation comprises a shaft and a mechanism to convert the angular rec... | 04/15/1997 |
| 5562010 | Reversing drive A shaft is provided with a low speed oscillating progressive drive by means of hydraulic cylinders which operate a lever mechanism which may be clutched to and declutched from, the shaft. A pneumatic control system senses the position of the pistons of th... | 10/08/1996 |
| 5558193 | Ball-type auger ratchet mechanism for agitator/auger systems A novel ball-type auger ratchet mechanism which may be used with washer agitators and augers. More particularly this mechanism comprises a top cap, a simplified cam, and a plurality of balls. The structures described have fewer parts than conventional aug... | 09/24/1996 |
| 5297454 | Indexing device of machine tool A device for rotationally indexing an indexing table by utilizing a synchronized tap function of a machine tool main spindle. The rotation and the axial feeding displacement of the main spindle are in a specific synchronized relation. When the main spindl... | 03/29/1994 |
| 5267479 | Force actuator arrangement A force actuator arrangement comprises a force generating member performing an oscillating movement, preferably a rod (7) of magnetostrictive material, force transmitting means-in a disc brake arrangement a caliper (4,5)-, and a device (8,9) for transform... | 12/07/1993 |
| 5261287 | Positive engagement clutch for a submersible cleaning device A drive mechanism for converting a reciprocating angular movement into one directional angular movement is disclosed for driving a shaft in a submersible cleaning device. In particular, a positive engagement clutch converts an alternating pivotal or angul... | 11/16/1993 |
| 5259258 | Friction clutch drive for a submersible cleaning device A friction clutch drive is used to translate the oscillating angular movement of the oscillator in a submersible pool cleaner into a unidirectional periodic angular movement. A disc element affixed to a drive shaft of the oscillator is urged into contact ... | 11/09/1993 |
| 5096009 | Method and arrangement for displacing forces In a method for displacing forces, particularly loads (P), either a force (P) acting on a guide surface (23) is reduced by an opposing force and simultaneously displaced, or a pressing force (P) is caused to act on a guide surface (23) in order to produce... | 03/17/1992 |
| 4999979 | Machine for continuously packing in particular food or pharmaceutical products in plastic material containers A machine is provided for continuously packing food or pharmaceutical products in thermoformed plastic material containers, comprising a station for receiving and unwinding reels of plastic material film, heating stations, a thermoforming station, a dosin... | 03/19/1991 |
| 4856303 | Agitator thrust spacer for automatic washer A thrust spacer having resilient, upwardly angled tabs is provided to act as a variable spacer within a two-piece agitator, between an upper agitator portion and a lower agitator portion to prevent relative vertical movement between the two portions while... | 08/15/1989 |
| 4777846 | Hydrokinetic energy converter and velocity and torque multiplier A hydrokinetic energy converter transforms the rotary output of a prime mover into hydrokinetic energy, which is blocked in an energy circuit including fluid coupled flywheels. The converter comprises a lighter flywheel mounted to rotate within and in flu... | 10/18/1988 |
| 4766772 | Hub mechanism for self-propelling type light vehicle A hub mechanism according to this invention for the self-propelling type light vehicle is provided with: a hub shaft secured to the main body of the vehicle; a pair of right and left drivers rotatably carried by the hub shaft and rotatable in the directio... | 08/30/1988 |
| 4719769 | One way clutch for dual action agitator A dual action agitator for use in a washing machine utilizes a one-way dog clutch having a plurality of dogs made of elastomeric material and pivotally mounted in a cam. The dogs pivot outward to engage an inner surface of an upper agitator barrel to driv... | 01/19/1988 |
| 4667779 | Unidirectional high gain brake stop This invention relates to a unidirectional high gain brake arrangement that includes in combination a shaft mounted for rotation within a housing. The shaft is rotatable in either direction. A brake is selectively releasably coupled to the housing and to ... | 05/26/1987 |
| 4615258 | Drive device operated by a pressure fluid In a drive device operated by pressure fluid a progressive linear or swinging or rotary movement of a driven element is produced by means of at least one lifting element. Between the lifting element and the driven element there is arranged at least one we... | 10/07/1986 |
| 4611630 | Single hydraulic line choke valve system A choke valve with a power system operated via a single hydraulic line. The sleeve of the choke valve is operated by a carrier mounted through an eccentric pin and guide track arrangement to open and close the valve with the rotation of a valve drive shaf... | 09/16/1986 |
| 4572027 | Motion converter Apparatus for converting multi-directional input to uni-directional output having a plurality of drivers rotated by the input and moveable to alternate positions with respect to opposed surfaces on the output driven member for frictional drive of the driv... | 02/25/1986 |
| 4567781 | Steady power A reciprocating input rod lifts a heavy ball up an inclined circular track that provides a path for the ball to roll down by gravity. The ball's speed of rotation causes the track itself to rotate and this rotation provides useful output energy of rotatio... | 02/04/1986 |
| 4520638 | Triple action agitator for automatic washers An agitator thruster is provided for an automatic washer for increasing the rollover of clothes during the agitation portion of a washing cycle wherein the thruster moves in a vertical reciprocating motion by action of a pin carried by the thruster engagi... | 06/04/1985 |
| 4419905 | Bicycle transmission A collar on the drive shaft of a bicycle pedal hub is mounted with means to displace the collar longitudinally along the shaft. The displacement is accomplished by a limited reverse rotation of the pedals and shaft. The direction of the displacement may b... | 12/13/1983 |
| 4415270 | Paint mixer container clamping device with inertially driven can rotating function A device for mixing paint and similar thick liquids within a container in which the container is held between the jaws of a clamp and rocked back and forth by a source of power. The clamp jaws are freely mounted so that they can rotate with the container ... | 11/15/1983 |
| 4349287 | Intermittent paper feed mechanism An intermittent paper feed mechanism comprises a driving wheel rotationally driven in an intermittent manner, a driven wheel disposed opposite to and rotated by the driving wheel, a stopper means for restricting the angle of rotation of the driving wheel ... | 09/14/1982 |
| 4325264 | Supersonic vibration driven motor device A supersonic vibration driven motor comprising a supersonic oscillator and a mass rotationally driven thereby. The oscillator is provided with a vibration disc secured thereto on an end face thereof opposite to the mass to be driven. The mass is integrall... | 04/20/1982 |
| 4295381 | Crankless reciprocating engine and gyroscopic power transmission system A constant torque power transmission consisting of a rotating mass, or gyroscope, rotating around a first axis and supported by a frame or enclosure in turn pivotally supported about a second axis at right angle to the first axis by a gimbal, the gimbal b... | 10/20/1981 |
| 4281987 | Ultrasonically driven low-speed rotary motor A device using longitudinal ultrasonic vibrations for rotating a shaft at relatively low rotational speeds is particularly useful for rotating a brush-type tooth polisher on an insert for an ultrasonic dental prophylaxis unit. The device has a sleeve whic... | 08/04/1981 |
| 4270637 | Adjustable spring clutch This invention relates to a spring clutch having a slot circumferentially about its surface to provide for a predetermined amount of rotation of its input clutch drum relative to the output clutch drum before effecting rotation of its output clutch drum. ... | 06/02/1981 |
| 4254577 | Model vehicle A model vehicle of the steerable road racing type for confined movement along a trough type roadway or track of plural land width including a dirigible wheeled chassis carrying a drive motor, a clutch mechanism operative to drive the wheeled running gear ... | 03/10/1981 |
| 4129064 | Fluid operated stepping motor A fluid operated stepping motor comprising a cylinder housing having one or more fluid cylinders to alternately displace at least two cam engaging members when pressure from a pressure source is applied to one of the cylinders. The cam engaging members ar... | 12/12/1978 |
| 4116315 | Landing gear actuator A pneumatic landing gear actuator is provided for use with an extendible and retractable landing gear assembly having an input member the rotation of which extends or retracts the landing gear foot in dependence upon the direction of rotation. The landing... | 09/26/1978 |
| 4096761 | Apparatus and method for incrementally rotating a shaft An apparatus and method for incrementally advancing a shaft by a selected rotational amount. The apparatus includes a belt trained about a pair of space driven pulleys, the belt forming both first and second runs between the pulleys. Each pulley is associ... | 06/27/1978 |
| 4068503 | Combined oscillating and unidirectional agitator for automatic washer Improved agitation means for use in a clothes washing machine of the type in which an agitator is oscillated by means of a drive mechanism to secure agitation of the clothes placed within the washing machine. The present invention provides a first agitato... | 01/17/1978 |
