Class 74/127 - Screw and nut devices

Subclass of Class 74 - Machine element or mechanism
Definition: Mechanisms, in which the parts include relatively movable
No. of patents: 31
Last issue date: 09/25/2007

Number	Title	Issue Date
7273026	Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i...	09/25/2007
7182002	Screwdriver handle structure A screwdriver handle structure includes a handle having a storage compartment. The compartment comprises a number recesses to store screw heads therein. The handle is provided with a locator having a trough to receive an engaging device therein. The handle further c...	02/27/2007
7102245	Integral generator/pinion assembly for axle power generation A vehicular axle assembly includes an electrical generator for generating electricity to supply power to one or more electrical components therein during operation. The axle assembly includes a hollow housing that rotatably supports a differential mechanism therein....	09/05/2006
7080582	Screwdriver tool A screwdriver tool has a driving body and a tool shank mounted in the driving body so it can rotate about its axis. A device for transmitting a torque from the driving body to the tool shank interrupts the torque transmission if a predefined limiting torque is excee...	07/25/2006
7044479	Steel retainer for rock drill A simple and positive drill steel retainer comprises a retainer and a latch. The retainer cannot be opened until the latch is disengaged. The latch is held in the engaged position by a spring. The retainer and latch can be easily operated with one hand. ...	05/16/2006
6322336	Lubricating device for a plurality of lubricating stations In a lubricating device for a plurality of lubricating stations, in particular for supplying lubricant to knitting machines, a pump device is provided that serves at the same time as a distributor device. To that end, the pump device has a piston which is...	11/27/2001
6308586	Gear transmission with stepless adjustable translation The invention relates to a gear transmission with a steplessly adjustable translation ratio for converting of rotary speeds and of torques of shafts. The uniform rotary motion of a drive shaft is transferred to a driven shaft with the aid of time staggere...	10/30/2001
6223612	Flywheel motor transmission Motion of an apparatus having reciprocal linear motion of an input member is converted into alternating rotary motion of a drive member such as a drive shaft or a drive gear. Additionally, a system is taught which uses linear motion, oscillating motion an...	05/01/2001
6182535	Fuse insertion device A semi-automatic fuse and cap insertion tool includes a socket mounted on a rotatable shaft, which shaft is mounted in a gun-like holder structure. A resilient means between the shaft and the holder keeps the shaft in a first position. With a fuse and cap...	02/06/2001
5787953	Cordless apparatus for operating blinds and shades Apparatus for cordless operation of blinds and shades. A pair of actuators are in spiral engagement with a spiral wand coupled to a rail mechanism from which the blinds or shades depend. Each actuator is biased into driving engagement with the wand, one o...	08/04/1998
5765405	Agitator for a clothes washer having a vertically reciprocable rod for preventing entanglement of clothes A clothes washing machine includes a washing basket and an oscillating agitator disposed at a bottom of the washing basket. The agitator includes a plate having radial blades, and an upward guide fixed at a center of the plate. A reciprocable member is mo...	06/16/1998
5588221	Drive drive shaft for a paint brush and roller cover cleaning machine An improved drive shaft assembly (11) for a paint brush and roller cover cleaning machine (10) providing a blank clutch disk (40) having an opening (41) which does not substantially increase in size with use of the paint brush or roller cover cleaning mac...	12/31/1996
5577412	Apparatus for converting a reciprocating motion into unidirectional rotation The apparatus has the form of a non-self-braking helical mechanism located inside casing (24) and having a driving member (2) and a driven member (1) connected to the driving member (2) through rolling bodies (3). The driving member (2) is connected to un...	11/26/1996
5560402	Reversible direction wire twisting pliers A reversible wire twisting plier tool is provided, which includes a pair of plier arms each having a jaw portion and a handle portion and which are pivotally interconnected and movable between an open position and a closed position. A plier rotating mecha...	10/01/1996
5024565	Hand tool A hand tool can remove burrs from an aperture in a workpiece. The tool has a hollow handle and a shaft rotatably mounted in the handle to reciprocate axially therein. The tool has a thruster for urging the shaft to extend axially. A rider is mounted in th...	06/18/1991
4942936	Electrohydraulic/air bike A bicycle or motocycle that can be driven either by compressed air or pressurized hydraulics in which either an electric motor operated from a battery source drives a pump or the rider manually provides pedal power for driving the pump in compressing eith...	07/24/1990
4912995	Thrust to torque converter, particularly for coupling a reciprocating shaft to a rotary electrical generator or the like A rotary-to-linear mechanical motion converter has a housing attachable to a drive engine, an input shaft reciprocable to the housing and coupled directly or through a gear arrangement to a reciprocating output shaft of the drive engine, a first drive tra...	04/03/1990
4865152	Electrohydraulic vehicle drive system A power drive system highly adaptable for non stationary vehicle drive in which a battery powered electric motor is mechanically coupled to a hydraulic pump for pressurizing hydraulic fluid that is fed to a cylinder motor that is operably connected to one...	09/12/1989
4829841	Rotary driving device This invention relates to a rotary driving device, wherein a rotation and an axial movement of an input shaft are imparted to intermediate members as a rotary movement through a torsional connection, whereby the rotary movement of the intermediate members...	05/16/1989
4753124	Screw and nut device for taking up clearance Device comprising a screw (6) and a nut (8) subjected to an axial force which alternates in opposite directions, the thread (7) of the screw having a given helix angle and a given pressure angle which are so chosen that, in a first direction, termed rever...	06/28/1988
4577522	Torsional thrust tool A rotary hand tool driven by reciprocal thrusts of a handle in which reciprocal motion is caused by extensions from a rotating shaft assembly engaged with elongated, axially spaced helical slots in a housing coaxial with the shaft and fixed to the handle....	03/25/1986
4574881	Split nut in blowout preventer An improved split nut for use in blowout preventers temporarily installed on oil or gas wells is formed by fastening a base and a cap together. Fastening bolts are inserted through holes in the cap and in packing inserts in the base, and threaded into fas...	03/11/1986
4573427	Bird scaring device A device for scaring birds thereby aiding in the prevention of crop destruction due to the birds feeding thereon comprises in combination an actuator, such as an air gun which ejects at increased velocity a gaseous stream in a predetermined path, a frame ...	03/04/1986
4494025	Linear drive device with two motors The linear feed device is suitable for extremely slow feed rates or extremely small feed steps. It works with two motors (M1, M2) which drive a nut (16) and a screw spindle (2) via an intermediate drive (12-15; 22-25). The intermedia...	01/15/1985
4462345	Energy transfer device utilizing driveshaft having continuously variable inclined track An energy transfer device includes a rotatable driveshaft supported within a cylinder and including first and second pistons slidably mounted within the cylinder. The driveshaft has first and second generally helical tracks formed thereupon and extending ...	07/31/1984
4436294	One hand clamping device A one hand clamping device which is flexible and reversible in operation, comprises a hand held main unit having mounted thereon a C-shaped clamping structure which is also changeable in relative position with the main unit, an actuating grip together wit...	03/13/1984
4306599	Change-over mechanism for operating screwdriver in automatic or latched state A screwdriver main body supports a shank which is axially slidable and rotatable with respect thereto. A change-over ring supports a latch pawl which is turnable by its engagement with the ring mechanism. The pawl, when turned inward, locks the shank and ...	12/22/1981
4263825	Reciprocating stroke length adjustment device and method The adjustment screw that regulates the stroke length of the piston that drives a diaphragm pump is rotated by means of a clutch and "diamond-back" screw structure. By selectively engaging either of two oppositely oriented one-way clutches, one of two res...	04/28/1981
4238002	Suspension device Apparatus for suspending a mass and using the weight of said mass to slowly rotate it. The apparatus includes a housing and a shaft within the housing coupled to said housing by means of a spiral cam so that longitudinal movement of the shaft causes the s...	12/09/1980
4231405	Pencil driven mechanical pencil sharpener A mechanical pencil sharpener including a housing with a cutter assembly adapted to receive the end of a pencil along its longitudinal axis. The manual force associated with inserting a pencil into the cutter assembly causes the cutter assembly to slidabl...	11/04/1980
4039013	Hand tool with helical drive A hand tool providing for helical drive of tool bits is fabricated from a handle providing a coaxial bore with an abutment shoulder at one end, and a guide member having a helical rib along a bore extending therethrough is firmly seated in the open end of...	08/02/1977

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Class 74/127 - Screw and nut devices