Class 74/47 - Crank and lever

Subclass of Class 74 - Machine element or mechanism
Definition: Mechanisms, including a crank and lever.
No. of patents: 25
Last issue date: 10/21/2008

Number	Title	Issue Date
7438029	Piston waveform shaping An assembly includes at least one piston, a rotating member, a transition arm, and a mechanism. The transition arm is configured to translate between rotational movement of the rotating member and a first linear motion of the piston. The mechanism is configured to s...	10/21/2008
7162948	Variable stroke assembly balancing An assembly includes a piston and a transition arm coupled to the piston. The position of the transition arm is adjustable to vary a stroke of the piston. A balance member is adjustable relative to the transition arm to counterbalance the transition arm in varying p...	01/16/2007
6913447	Metering pump with varying piston cylinders, and with independently adjustable piston strokes A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cyli...	07/05/2005
6749550	Central drive linkage for cutting and creasing machine This invention concerns an improvement of the central drive linkage for the cutting and creasing machine which comprises at least a plurality of differential gears mounted on the upper part, and a plurality of fine-tuning mechanism evenly distributed on the lower pa...	06/15/2004
6505528	Device for fast taking out and putting in The invention is a device for fast taking out and putting in, especially the device can fast take out a chip from a wafer to put in another chip receptacle, wherein, the invention includes a gear set, which consists of a first big gear, a second big gear ...	01/14/2003
6342042	Adjustable amplitude exerciser with foot cradle The apparatus is a foot exerciser which swings the feet with an electric motor driven rotating cam with holes spaced at different distances from the drive shaft. The cam has a drive link attached at one of the holes and the drive link is also attached to ...	01/29/2002
6282823	Driver courtesy device A driver courtesy device includes a first unit attachable to the dashboard or steering console of an automobile, within reach of the driver of the automobile, and a display unit mounted adjacent the rear window or one of the side windows of the automobile...	09/04/2001
5890256	Screen wiping apparatus for a motor vehicle, having an improved mechanism for orientation of a drive spindle A motor vehicle screen wiper apparatus comprises a screen wiper mounted on the upper end of a drive spindle, the apparatus including means for varying the inclination between the spindle axis and a reference axis which is substantially at right angles to ...	04/06/1999
5652994	Wiper arm especially for cleaning windshields of motor vehicles The invention refers to a wiper arm with a fixing part made from asheet metal, comprising a bore for the non-rotatable fixation on a wiper shaft and which is provided at least around the bore with an upper sheet metal section and a bottom sheet metal sect...	08/05/1997
5570724	Mechanism for controlling the reciprocating movement of griffe frames with connection rod/crank system A mechanism for controlling the reciprocating movement of griffe frames in a weaving loom which includes four crank arms which are mounted offset angularly with respect to one another to a driving shaft associated with the loom. Two short connecting rods ...	11/05/1996
5458462	Swivel mechanism for electrical fan A swivel mechanism for the electrical fan having the motor used to drive the blade of the electrical fan is used to control the swiveling movement. The controlling elements generally includes an U-shape supporting bracket, a positioning post and a connect...	10/17/1995
5363912	Electromagnetic coupling An improved electromagnetic coupling apparatus is advantageously utilized in conjunction with an oil well pump assembly. The electromagnetic coupling apparatus includes rotatable inner and outer shafts. A stationary annular coil assembly is supported on t...	11/15/1994
5186064	Wiper for use in a vehicle A wiper is provided for use in a vehicle for wiping the windshield glass. A holder is fixed to a baseplate of the vehicle body and, against the holder, an inner bearing is supported so as to rotate about its axis. A pivot shaft is inclined relative to the...	02/16/1993
5022157	Transmission mechanism for scroll sawing machine A transmission mechanism for a scroll sawing machine is disclosed. An upper counter weight and a horizontal counter weight are secured to the lower end of a rocker arm, which has its top end secured to the scroll saw blade upper driving arm, and carried t...	06/11/1991
4666173	Foot pedal drive for bicycles A bicycle having pedal bars pivoted on the frame near the rear wheel, with a pedal sprocket positioned above the rear wheel. A connection member couples the rear end of each of the pedal bars to the pedal sprocket and further includes conversion mechanism...	05/19/1987
4531897	Piston pump with a rotating piston A piston pump with a rotating piston is driven by a motor. A crank is provided on the motor shaft and has a first rolling surface on its front side. A further rolling surface engages the first rolling surface, the further rolling surface being provided on...	07/30/1985
4522543	Device for feeding invalids Apparatus for use in feeding physically incapacited persons comprising a spoon supported for orbital and rectilinear movement in a predetermined path, one or more receptacles, and kinematics selectively operable to move a selected receptacle into the path...	06/11/1985
4241717	Oscillating flight control device for a ball projecting machine A device for use with a tennis ball projecting machine to control the flight of the balls projected from the machine through a flexible tube. The device has a pair of adjacent casings supporting the tube. The first casing is pivotably mounted at its rear ...	12/30/1980
4208924	Drive for operating a punching tool A drive for operating a punching tool comprises a toggle-joint lever to one of whose lever members the punching tool is operatively connected. The second lever member of the toggle-joint forms part of a quadrilateral linkage. This linkage consists of the ...	06/24/1980
4173903	Crank drive for a photographic camera The invention relates to a crank drive, particularly to a crank drive for photographic cameras having a crank including a crankpin, and a drawbar pivotable about the crankpin. The drawbar consists of first and second rods connected to one another, and dis...	11/13/1979
4157666	Motion-transmitting arrangement A motion-transmitting arrangement, particularly for windshield wipers, has a drive with a rotary output shaft on which a crank member is mounted for rotation. A crank rod has one end connected to a crank pin which is transversely spaced from the shaft, an...	06/12/1979
4154119	Linkage device for converting a hydraulic vehicular clutch to mechanical operation A mechanical linkage device is provided for replacing the master and slave cylinders and associated parts in a hydraulic vehicular clutch system to convert the system to direct mechanical operation. The linkage device, provided in kit form and installable...	05/15/1979
4144770	Throttle-valve control The invention provides a throttle-valve control arrangement for an engine mounted by vibration dampers on a support structure. The arrangement insures that pivotal movements between the engine and the support structure about a pivot center do not effect t...	03/20/1979
4137783	Device for converting a rotary movement into a reciprocatory movement The invention relates to a device for converting a rotary movement into an oscillating movement frequently employed in agricultural implements, comprising a rotatable driving shaft, a fly-wheel rigidly secured thereto, an oscillatorily driven body adapted...	02/06/1979
4117735	Power wrench A power wrench having at least a partially annular drive head connected at first and second pivots through a first of a pair of telescopic members and to a third member, respectively, the third member being connected by a third pivot to the second member,...	10/03/1978

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Class 74/47 - Crank and lever