Shock absorber for oil well pumping unit
A shock absorber for use to interconnect the polish rod of an oil well with the pumping unit in which the pumping unit includes a hanger bar having an opening therein receiving the polish rod is described. The shock absorber employs a tubular body axially to receive the polish rod. This tubular body is supported on the hanger bar and includes a number of disc of elastomeric material. Each disc has an opening therein and includes a top plate secured to the polish rod with a polish rod clamp so that on up stroke of the pumping unit the elastomeric members are pressed and the openings therein form an air cushion to assist in alleviating shock transition from the polish rod to the pumping unit. 2 claims.
- Assignee:
- K-Shox, Inc.
- Patent Number(s):
- US 4176714
- OSTI ID:
- 5494626
- Country of Publication:
- United States
- Language:
- English
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