Cushion cylinders

Details Cushion cylinders Cushion cylinders

1981-11-17

1984-09-18

Garrett, Robert E.

Expansible chamber devices

Relatively movable working members

First working member moves second coaxial working member...

92 65, 92 66, 92 85B, 92107, 92117A, 92143, 72347, 267119, F01B 700

Patent

active

044716877

ABSTRACT:
The disclosure describes a new type of pressure cylinder to provide clamping force while fabricating deep drawn metal parts. The piston is a hollow cylinder connected to the clamping pad. The drawing tools are connected to the draw ram by a rod passing through the hollow piston. This arrangement provides a smaller overall press height and an axisymmetric clamping force. In addition, the symmetry of the parts described means that the wear parts can be reversed to double their useful lives.

REFERENCES:
patent: 3793871 (1974-02-01), Kinghorn
patent: 3902718 (1975-09-01), Avon
patent: 4006666 (1977-02-01), Murray
patent: 4111030 (1978-09-01), Shepard et al.
patent: 4365499 (1982-12-01), Hirota et al.

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