Roller Belleville spring damper

Details Roller Belleville spring damper Roller Belleville spring damper

1979-05-14

1981-07-07

Pate, III, William F.

Boring or penetrating the earth

With tool shaft detail

Axially telescoping shaft section

64 23, 267160, 267162, E21B 1700

Patent

active

042769477

ABSTRACT:
A double acting damper for use in rotary drilling includes a splined tubular telescopic joint and employs plural paralleled stacks of double acting series stacked roller Belleville spring washers in an annular pocket between the inner and outer tubular members of the joint. The springs, spline and telescopic bearings are in an oil filled volume sealed from the outside by a pressure seal at the lower end of the damper and a floating seal at the upper end. Electric and magnetic means are provided to check on the condition and quantity of the lubricant.

REFERENCES:
patent: 1641059 (1927-08-01), Tausch
patent: 2675225 (1954-04-01), Migney
patent: 4133516 (1979-01-01), Jurgens
patent: 4139994 (1979-02-01), Alther

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