Multidirectional shock absorbing device

Details Multidirectional shock absorbing device Multidirectional shock absorbing device

1975-02-18

1976-12-21

Cherry, Johnny D.

Spring devices

Fluid

Expansible-contractible chamber device

64 23, 175322, E21B 1700, F16D 312

Patent

active

039984435

ABSTRACT:
A housing with a mandrel therein is adapted to be connected in a rotary drill string. The housing and mandrel are constructed and arranged to support the work load of the rotary drill string as well as dissipate both longitudinal and radial impact or shock loads that the drill string may encounter. The construction also includes means whereby radial impacts applied to the drilling assembly are connected or translated into longitudinal components of force so that various combinations of longitudinal and/or radial impact or shock loading of the drill string may be dissipated in a manner to inhibit damage to the drill string and its components.

REFERENCES:
patent: 2754086 (1956-07-01), Summers
patent: 2795398 (1957-06-01), Ragland
patent: 3230740 (1966-01-01), Fox
patent: 3301009 (1967-01-01), Coulter
patent: 3339380 (1967-09-01), Fox
patent: 3350900 (1967-11-01), Harrison

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