Hydraulic riveter

Details Hydraulic riveter Hydraulic riveter

1979-09-10

1981-04-28

Moon, Charlie T.

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

60479, 72391, 81301, B21J 1534

Patent

active

042638011

ABSTRACT:
A hydraulic tool comprising a cylinder which is open at one end with a piston extending partially therein, but having a substantial portion extending outside. A lateral bore through the extending portion accommodates intake and exhaust check valves, but the bore is sealed off between them, forming an inlet chamber. Surrounding the inlet and exhaust ports and sealed at its opposite ends to the piston and cylinder, respectively, is a flexible, extendable sleeve forming an annular reservoir. A transfer duct extends from the inlet chamber to a pressure chamber formed between two seals around the piston, and a longitudinal bore opens into the inlet chamber from the extending end of the piston to slidably accommodate a manually-operated pump plunger.

REFERENCES:
patent: 2714250 (1955-08-01), Twedt
patent: 3329000 (1967-07-01), Schwab
patent: 3996784 (1976-12-01), Champoux
patent: 4086802 (1978-05-01), Ewig

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