초록 ▼

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 th

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.

대표청구항 ▼

An hydraulically actuated apparatus comprising: (a) a hollow body having internal walls defining a piston chamber, said body being provided with at least one groove in the exterior thereof; (b) a cylindrically shaped piston reciprocally movable within said piston chamber, said piston being provided

An hydraulically actuated apparatus comprising: (a) a hollow body having internal walls defining a piston chamber, said body being provided with at least one groove in the exterior thereof; (b) a cylindrically shaped piston reciprocally movable within said piston chamber, said piston being provided with an annular groove and including: (i) a first surface extending beyond said hollow body; and (ii) a second, spaced apart opposing surface having an area which is in even multiples of one square inch and defining, in cooperation with said internal walls of said hollow body, a pressure chamber; (c) an elastomeric ring receivable in said annular groove; (d) an hydraulic pressure sensing means connected to said hollow body for sensing hydraulic pressure within said pressure chamber and for displaying said pressure in pounds per square inch; (e) hydraulic means connected to said hollow body for introducing fluid under pressure into said pressure chamber to move said piston in a first direction; (f) a substantially U-shaped member removably affixed to said hollow body, said member having spaced apart arms interconnected by a bight portion said arms having inturned end portions adapted to be removably received in said groove provided in said body; and (g) a cutter element operably associated with said piston whereby movement of said piston in a first direction will cause said cutter element to move toward said bight portion of said U-shaped member.