Pneumatically powered elastic ring expander

Details Pneumatically powered elastic ring expander Pneumatically powered elastic ring expander

1979-03-07

1981-04-14

Jones, Jr., James L.

Metal working

Means to assemble or disassemble

To apply or remove a resilient article

B23P 1902

Patent

active

042610893

ABSTRACT:
The invention relates to a pneumatically powered tool for expanding elastic rings. The expander includes four prongs which in use are passed through a ring and forced apart by a pneumatic ram to stretch the ring into a square by a reverse cam action of a pneumatic ram thereby opening two jaws which each carry one prong. The second pair of prongs are carried by two arms each linked to a jaw so as to open and close with the jaws. The arms are also directly coupled to the ram so that when it acts to open the jaws it also slides the arms longitudinally along the jaws so that the arm prongs are forced longitudinally apart from the corresponding jaw prongs.
When a double acting pneumatic ram is used a tool mounted two-section two-way rocker valve directs compressed air to the appropriate side of the ram piston and allows air to be exhausted from the opposite side.

REFERENCES:
patent: 2561286 (1951-07-01), Montgomery
patent: 2582640 (1952-01-01), Maddox

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