Abstract: 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 an arm which is connected fixedly to the pump piston. In one preferred embodiment, the crank is coupled with the piston in such a manner that a projection on a part connected fixedly with the piston engages a recess in the crank. An arrangement is provided for maintaining the contact between the rolling surfaces during the suction stroke of the pump. The piston controls an inlet opening and an outlet opening to the chamber in which it is movably supported. The transmission of forces during the discharge stroke through surfaces which roll on one another results in a long lifetime of the pump and quiet running.

Abstract: The machine translates linear reciprocating motion to rotating motion by placing two wedge cams on opposite sides of an opening in a reciprocating piston. The cams operate on a rotating follower within the opening, moving it in a complete rotation when the piston moves through a complete reciprocation or cycle. The wedges and the rotating follower surfaces are such that a line connecting the point of contact between them and the axis of rotation of the rotating follower will always be perpendicular to the direction of motion of the reciprocating member. The surfaces are also chosen so that there is no sliding motion between them during the cycle; that is the contact between the parts is pure rolling contact. This machine is suitable for the power take off from a free piston or other reciprocating engine.

Abstract: A pump driving mechanism of this applications is formed by supporting a piston body 3 provided with a piston rod 9 and an elastic arm 18 movable in directions vertical to reciprocally moving directions of the piston body, between respective free ends of a pair of elastic leg pieces 16 and 17 fixed at one end and freed at the other end, and connecting an eccentric shaft 23 driven to be rotated by a motor 22 to a shaft bearing 21 formed at a free end of the elastic arm 18, whereby a low noise reciprocating movement within a cylinder 14 is provided to a piston rod 9 by rotations of the eccentric shaft 23.

Abstract: A percussive tool has a percussion mechanism driven by a linkage that combines the simplicity of a connecting rod drive with the compactness of more complex drives. A first member, which may be a crank, drives a second member, which may be a cylinder, mounted for sliding and pivotal movement in a guide. A piston is mounted for reciprocating movement in the cylinder. Rotation of the crank reciprocates the piston causing blows to be imparted to a tool piece. The tool piece is rotated as well as being subjected to percussion.

Abstract: A device for converting the rotary motion of a crank mechanism into the linear motion of a slide block. In order to enable the slide block to make a constant velocity motion in an angular range required by the crank pin and extending from the crank pin in opposite directions, the device is designed to control the angular velocity of the crank mechanism along the ideal angular velocity variation curve.

Abstract: The invention relates to a reciprocating driving device for a movable member such as a movable hair shearing blade assembly in reciprocal type electrical shaver. A reciprocally driven mounting member is coupled to an eccentric shaft of a motor and comprises a carrier which carries the movable blade. Resilient legs support the plate part for movement only in the direction of reciprocation and are fixed at the other end. Each leg includes at least two parts joined intermediate their ends by a rigid member disposed parallel to the carrier. A driven arm extends from the carrier to flex only in directions perpendicular to the direction of reciprocation.

Abstract: Apparatus for shaking fish free from gillnets, longlines and similar fish capturing means as such fish capturing means are hauled aboard a fishing vessel so as to disentangle fish individually snared on such fish capturing means and to permit such freed fish to fall into the hold of the fishing vessel or into other suitable fish collecting and/or processing means.

Abstract: The motion translation mechanism of the invention includes a crankshaft having a crank arm with an integral eccentric pin. A circular linkpiece is provided which has an opening positioned eccentric to the center axis of the circular linkpiece and positioned within the circular linkpiece eccentric opening. A displacement member with flat bearing surfaces is mounted for reciprocating motion and has a circular opening. A first thrust converting means secured to the circular linkpiece, as well as, second and third thrust converting means that come into consecutive contact with the first thrust converting means. The circular linkpiece is positioned within the circular opening of the displacement member, whereby reciprocating motion transmitted to the displacement member is converted to rotary motion of the crankshaft via the apparatus just enumerated.

Abstract: A modified hypocycloid gear arrangement is incorporated as a transmission converting rotary motion into linear motion or vice versa in any form of prime mover, such as a gas engine, internal combustion engine, or any form of pump or other energy converter, in place of a conventional crank-connecting rod transmission element; specific embodiments are disclosed, relating to single, twin, flat-four, vee-8 and other single and multi-cylinder piston engines and motors and their adaptions, e.g. to vibration-free surgical power saws and torpedo propulsion units, due to the improved mechanical efficiency and precise engine balancing allowed by transmission arrangemenets according to the invention disclosed.

Abstract: The motion translation mechanism of the invention includes a crankshaft having a crank arm with an integral eccentric pin. A circular linkpiece is provided which has an opening positioned eccentric to the center axis of the circular linkpiece and positioned within the circular linkpiece eccentric opening. A displacement member with flat bearing surfaces is mounted for reciprocating motion and has a circular opening. The circular linkpiece is positioned within the circular opening of the displacement member, whereby reciprocating motion transmitted to the displacement member is converted to rotary motion of the crankshaft via the apparatus just enumerated.

Abstract: A vibratory drive assembly for use with an electric motor driven apparatus comprising a plate driven in reciprocating vibratory movement and mounted on a frame via integral hinge strips which are arranged with their longitudinal directions transverse to the direction of vibratory movement and transverse to the longitudinal direction of an associated pin-shaped drive element.

Abstract: Apparatus is disclosed for translating rotary motion into reciprocating motion, of the type utilized in piston operated pumps. The apparatus includes a crank shaft having one or more axially offset diameter segments, each segment having a block bearing partially encircling it, and the block bearing having a raised shoulder for mating with a piston surface groove. The piston is spring biased so as to hold the assembly comprising the piston, block bearing, and offset diameter segment together in a unitary assembly, so that rotation of the shaft causes the piston to reciprocate.