Patent ID: 11965383
Assignee: STABIL DRILL SPECIALTIES, L.L.C.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 7:
8. The multi-axis shock absorbing sub of claim 1, further comprising:
(d) a torsional shock absorbing assembly positioned within the sub housing and comprising:
(i) a first helix sleeve configured to rotate with the main stem, the first helix sleeve having a first helical cam surface formed on an end surface of the sleeve;
(ii) a second helix sleeve configured to translate relative to the main stem, the second helix sleeve having a second helical cam surface formed on an end surface of the sleeve and engaging the first helical cam surface;
(iii) a spring system positioned to resist movement of the first and second helix sleeves away from one another; and

(e) whereby rotational movement of the main stem causes the first and second helical cam surfaces to move (i) the first and second helix sleeves apart, and (ii) at least one of the first or second helix sleeves into engagement with the spring system.