Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7360911 | Oscillating belt and pulley drive system for high performance light emitting diode warning light assembly A plurality of support casings for light emitting diode warning lights are driven in synchronous arc movements by a belt and pulley drive system having a compact construction with four belt segments. ... | 04/22/2008 |
| 7350827 | Cam expansion ring assembly An expansion ring assembly and method for sealingly installing a gasket within an opening in a wall of a structure. The expansion ring assembly includes an expansion ring having first and second adjacent end portions, and first and second cam members are rotatably c... | 04/01/2008 |
| 7341542 | Exercise machine An exercise device providing a fore and aft horizontal component of striding motion that is dynamically user-defined, while providing a vertical component of the motion that is maintained on a predetermined vertically reciprocating path in some embodiments. The exer... | 03/11/2008 |
| 7258202 | Creation of temporary safety spaces for elevators The invention provides an elevator having a car movable along guide rails mounted in a shaft. The elevator comprises an inspection control station mounted on top of the car and accessible via a movable control station cover, blocking means for selectively preventing... | 08/21/2007 |
| 7146948 | Valve lifting arrangement A valve actuating assembly for opening and closing a valve includes a cam mounted on a camshaft and enclosed by a pair of rotary cam guides each of which includes a roller channel having an outer race for receiving opposed ends of a roller that extends transversely ... | 12/12/2006 |
| 7140871 | Cam-type guiding device and molding installation using same A cam-operated guiding device for controlling a related movement of a member which is moreover continuously displaced, the device including two mutually transversely offset parallel cams with which co-operate respectively two coaxial rollers for bilaterally guiding ... | 11/28/2006 |
| 7033293 | Expandable pulley An expandable pulley. The expandable pulley comprises a plurality of belt blocks arranged about an axis of rotation. Each belt block bears upon a radial surface extending normally to the axis of rotation. Another surface of each belt block bears upon a conical membe... | 04/25/2006 |
| 7022385 | Laminated imaged recording media The present invention provides a method for manufacturing an identification document that can contain both common information and unique information describing the specific document holder. The information is in the form of indicia applied by digital imaging means. ... | 04/04/2006 |
| 6990935 | Pivoting lifter control system using spool valve and check valve to recirculate oil An internal combustion engine that has a camshaft having a plurality of cam lobes, a plurality of valves where each of the valves are actuated by a lifter actuated by the camshaft with a cam lobe. The lifter comprises a lifter body having an upper surface and a lowe... | 01/31/2006 |
| 6935205 | Switch actuator A switch actuator is provided with a rotor in a housing and a third class lever having a cam follower operatively engaged against a cam surface of the rotor. A fulcrum of the lever is provided at a location relative to the rotor, which location is adjustable relativ... | 08/30/2005 |
| 6840170 | Device for torque compensation in a sheet-processing machine and reversing drum having a torque compensation device A device for torque compensation in a sheet-processing machine includes a cam-controlled compensating mechanism having an energy storage device for exerting a force, a cam disk, and a cam follower to be thrown onto the cam disk by action of the force from the energy... | 01/11/2005 |
| 6837198 | Variable valve distributor for load-controlling a spark-ignited internal combustion engine The invention proposes a variable valve train (1) for throttle-free load control of an internal combustion engine. Each cylinder of the internal combustion engine is provided with two inlet valves (9). According to the invention, each inlet valve (9... | 01/04/2005 |
| 6779498 | Internal combustion engine operating on spark-ignitable fuel An internal combustion engine operating on spark-ignitable fuel, which features at least one operating mode with homogeneous charge and self-ignition, and which includes at least one intake valve and at least one exhaust valve per cylinder, which can be coupled via ... | 08/24/2004 |
| 6745638 | Device mounted onto a slider crank for generating a displacement of a part mounted onto the slide in relation to the latter A device on a slider crank for generating a motion relative to the a slider (press ram 5) of a part (ejecting spring pin 6) mounted on the slider, wherein such motion is taken off a crankpin (1) upon rotation of the crankpin around a crankshaft ... | 06/08/2004 |
| 6692331 | Vibration mechanism for motion toy The present invention is to provide an improved vibration mechanism for a motion toy, which comprises a seat disposed on a top surface of a frame, two decorative member formed of a flexible bundle of plastic optical fibers and disposed in a pair of roller... | 02/17/2004 |
| 6684723 | Device for producing a lifting and lowering movement An apparatus for producing a lifting and lowering movement for lifting and lowering transverse transporting tongs of a forming machine includes a rotatable control shaft on which a control cam, a counter cam and a spring element cam are fitted. A pivotabl... | 02/03/2004 |
| 6615777 | Electrically rotatable shaft The invention concerns an electrically rotatable shaft, and more particularly, an adjusting shaft (1) of a fully variable mechanical valve train of an internal combustion engine, said shaft comprising an adjusting cam (2). The rapid and exact rotation of ... | 09/09/2003 |
| 6394437 | Clamping apparatus When clamping, compressed air within a second chamber (22) of a pneumatic cylinder (12) is discharged and fresh compressed air is supplied to a first chamber (21). Then a pressure of the compressed air within the first chamber (21) and an urging force of ... | 05/28/2002 |
| 6185849 | Crystal ball with assembled motive die set A crystal ball has an assembled motive die set. The crystal ball includes a music box and a driving base, wherein the driving base has a plurality of driven gears which are driven by a center motive gear installed on the base of the driving base. Assemble... | 02/13/2001 |
| 6101888 | Transmission device A driving member (15) of piston type has an upper side, on which an annular holder (28), upper and lower cams (31), (32), and a transmission sleeve (33) are arranged in order. An annular wedge space (35) is defined between the upper and lower cams (31) an... | 08/15/2000 |
| 6098478 | Linear pick and place drive with adjustable stroke ranges A linear pick-and-place drive mechanism for relocating articles with finite adjustable maximum translation stroke range and finite adjustable lift stroke range, using selective placement of a translation cam follower into one of several spaced adjustment ... | 08/08/2000 |
| 6032922 | Fluid flow control valve and actuating mechanism A fluid flow control valve is provided comprising a valve seat inside a housing for defining a passage opening in the housing and a valve seal positioned against the valve seat for closing off fluid flow. A push rod extends from the valve seal and through... | 03/07/2000 |
| 5931672 | Drive mechanism for oscillatory dental tool A dental tool assembly having a driving mechanism with interengaging camming surfaces shaped for continuous contact during use. The mechanism includes a drive shaft having a drive surface and a driven shaft having a driven surface. The cam surfaces are sh... | 08/03/1999 |
| 5904065 | Walking beam drive apparatus A fully enclosed cam-actuated drive device for providing both lift and translational movements, incorporating protection against damage in either horizontal or vertical overload situations, achieved by providing optional spring protection along the vertic... | 05/18/1999 |
| 5842296 | Crystal ball with assembled motive die set A crystal ball having an assembled motive die set. The crystal ball includes a music box and a driving base, wherein the driving base has a plurality of driven gears which are driven by the center motive gear installed on the base of the driving substrate... | 12/01/1998 |
| 5697237 | Electric motor driven operating device An electric motor operated actuating device for a blocking button of a door lock for central locking and unlocking of doors of a motor vehicle comprises an electric motor actuatable by a door key and provided with a driven shaft, a turning lever connectab... | 12/16/1997 |
| 5544546 | Transmission arrangement A transmission arrangement includes a plurality of transmission linkages, of which at least one performs an oscillating movement which is repeated during each period. A control cam is formed on a first transmission linkage and a feeler roller is rotatably... | 08/13/1996 |
| 5516075 | Controller A controller comprises a valve body having a valve element and a valve seat defining a fluid cannel openable and closable with a reciprocating upward and downward movement of a valve stem, a casing fixed to an upper portion of the valve body, an operating... | 05/14/1996 |
| 5488769 | Method of making torque compensated cam assembly A cam assembly and method for providing a substantially constant load to a motor that drives the cam assembly. A torque compensated cam assembly (142,300) includes a plurality of tracks (140,150,152/310,312,314) that are profiled with a surface that varie... | 02/06/1996 |
| 5385062 | Signal light oscillating mechanism An oscillating signal light mechanism producing substantially constant angular velocity oscillation cycles of a single light is comprised of at least one signal light assembly mounted on a base for rotation of the light assembly relative to the base, a so... | 01/31/1995 |
| 5357827 | Torque compensated cam assembly and method A cam assembly and method for providing a substantially constant load to a motor that drives the cam assembly. A torque compensated cam assembly (142,300) includes a plurality of tracks (140,150,152/310,312,314) that are profiled with a surface that varie... | 10/25/1994 |
| 5351723 | Three dimensional cam drive for gripper loom belt wheel An apparatus for driving a gripper belt in a rapier loom comprises a three-dimensional cam drive (1) for converting a rotational movement into a pivotal movement. The cam drive includes a rotatable cam carrier with a guide surface defining a closed curve ... | 10/04/1994 |
| 5343773 | Device for generating and decoupling different movements in cleaning and sealing stations in ink printers A motor-driven cam disk having a radially projecting, eccentrically arranged crank pin which generates a first movement, for example the pumping movement of a bellows pump. A running wheel which is pressed by a spring force against the cam disk in a resil... | 09/06/1994 |
| 5328443 | Massage apparatus The massage apparatus includes a casing having a bottom and a top with an elongated opening formed through it. An elongated support is provided on the top of the casing in the direction of the elongated opening. A pair of spaced upright rods is pivotally ... | 07/12/1994 |
| 5259877 | Apparatus with changeover grooves for forming phosphor layer in cathode-ray tube An apparatus for forming phosphor layers in cathode-ray tubes includes a table having a plurality of operating positions for processing panels for cathode-ray tubes to coat phosphor layers thereon. A plurality of angularly spaced clamp heads for holding t... | 11/09/1993 |
| 5142925 | Device for animating movable parts A disk driven rotationally by an electric motor includes a cam-shaped groove and a shaft orthogonal to the plane of the disk. One end of the shaft bears a radial arm connected rotationally to the shaft, and fitted with a pin designed to engage the groove.... | 09/01/1992 |
| 5063972 | Projectile accelerator for a loom A projectile accelerator has a coupling transmission articulated between a cam follower lever and a picking lever which has two end positions. The projectile accelerator also has an eccentric rocker on the drive shaft which cooperates with a tensioning lu... | 11/12/1991 |
| 5059393 | Analysis slide positioning apparatus and method for a chemical analyzer A chemical analyzer providing an analysis slide positioning apparatus and method for properly aligning a test slide relative to a sample dispenser of the chemical analyzer. The slide positioning apparatus is capable of moving the slide in three different ... | 10/22/1991 |
| 5055001 | Volumetric pump with spring-biased cracking valves A volumetric pump and method for displacing a predetermined quantity of fluid at a predefined cracking pressure, independent of supply and output pressures. The volumetric pump (30) includes an inlet cracking valve (46), an outlet cracking valve (52), and... | 10/08/1991 |
| 5029836 | Sheet register control for printing machines An improved mechanism for feeding paper sheets from a stack by suction includes a manifold provided with a plurality of spaced sheet pick up devices carried by the manifold and in fluid communication therewith. The improved mechanism also includes motion ... | 07/09/1991 |
