Cutlery – Cutting tools – Plural cooperating blades
Patent
1979-09-04
1981-08-25
Cohen, Irwin C.
Cutlery
Cutting tools
Plural cooperating blades
30182, 60328, 60477, 60481, 285278, 285281, B26B 1700, F15B 1518
Patent
active
042851262
ABSTRACT:
A multipurpose, hydraulically actuated apparatus comprising a piston movable in response to fluid under pressure within walls defining a piston chamber. Actuating fluid is supplied to the piston chamber by a uniquely constructed hand operated fluid pump. The area of the fluid impinging surface of the piston is in multiples of one inch. Accordingly, when the apparatus is used as a hydraulic scale the weight being lifted by the piston can be read directly on a pressure gauge which is calibrated in pounds per square inch and which is connected to the piston chamber below the piston.
The apparatus can readily be converted to function as a cutting device by connecting a U-shaped member to the walls of the unit and by connecting a cutting element to the outer face of the piston. The U-shaped member includes spaced apart arms and a bight portion defining a closed space adapted to encircle the nut which is to be cut. Pressure exerted on the piston will cause the cutting element to move toward the bight portion of the U-shaped member and into pressural engagement with the nut.
A unique pressure tight swivel coupling is provided in the conduit interconnecting the hand pump and the piston chamber so that the latter can swivel freely relative to the hand pump.
A further novel feature of the apparatus of the invention comprises an air tight, fluid carrying collapsible liner which is housed within the hollow body of the hand pump.
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Brunton James E.
Cohen Irwin C.
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