Polished rod clamp

Details Polished rod clamp Polished rod clamp

1998-07-16

2000-10-24

Browne, Lynne H.

Joints and connections

Interfitted members

Clamped members

403310, 166 7751, 74586, E21B 1200

Patent

active

061356700

ABSTRACT:
In an oil well pump, a rod liner is clamped onto a polished rod using an external clamp with an upper clamp section that clamps onto the polished rod, a lower clamp section that clamps onto the liner below the liner head and a yoke section bridging the upper and lower clamp section. In the preferred embodiment, the clamp has a main body extending across the liner head and upper and lower clamping blocks for clamping the rod and the liner respectively to the main body on opposite sides of the liner head.

REFERENCES:
patent: D310471 (1990-09-01), Kuykendall
patent: 1417490 (1922-05-01), Brandon
patent: 1664709 (1928-04-01), Severns et al.
patent: 2259020 (1941-10-01), Wineman
patent: 2779815 (1957-01-01), Sokol
patent: 3251310 (1966-05-01), Wittwer et al.
patent: 3475798 (1969-11-01), Crickmer
patent: 4286656 (1981-09-01), Felder
patent: 4296678 (1981-10-01), Felder
patent: 4498845 (1985-02-01), Pittman et al.
patent: 4534746 (1985-08-01), Hausinger
patent: 4574881 (1986-03-01), Bednarz
patent: 5058454 (1991-10-01), Head
patent: 5394939 (1995-03-01), Walker
patent: 5441108 (1995-08-01), Jenkins et al.

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