Hydraulic cylinder with concentrically maintained piston and rod

Details Hydraulic cylinder with concentrically maintained piston and rod Hydraulic cylinder with concentrically maintained piston and rod

1977-01-24

1978-02-07

Shedd, Wayne L.

Joints and connections

Rod end to transverse side of member

Rod received in recessed side, e.g., socket or tapered...

403253, 403343, F16B 900

Patent

active

040724344

ABSTRACT:
A piston rod has a shoulder longitudinally spaced from one end thereof so as to form a stem of reduced cross section for engagement into a piston within a hydraulic cylinder. The stem includes a threaded shank extending from its free end to a male cylindrical pilot spaced from the shoulder by an annular stress-relieving groove. A piston has a threaded central bore portion and counterbore portions at each end, wherein one counterbore portion functions as a female pilot for receiving therein the male pilot in an interference fit relationship, and the other counterbore receives therein a plastic sealing ring which engages the threaded shank of the stem in sealing and centering relationship.

REFERENCES:
patent: 3040796 (1962-02-01), Gouverneur
patent: 3187645 (1965-07-01), Cope
patent: 3522830 (1970-08-01), Blizard
patent: 3652111 (1972-03-01), Dent
patent: 3885461 (1975-05-01), Crisp et al.
patent: 3914067 (1975-10-01), Leto

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