Title:
PROVIDING A COUNTER TORQUE FORCE WITHIN A FASTENING
Document Type and Number:
WIPO Patent Application WO/2010/129698
Kind Code:
A3
Abstract:
A washer body 6 bearing hardened balls in apertures 16 in the washer body 6 provides a counter-torque resistance in a fastening 2. The hardened balls form projections 10 that indent the underside of a fastener head 3 and an adjacent fastening joint surface 8 during tightening of the fastening 2 to prevent rotation of the fastener head 3 while a nut 7 is driven to tighten or loosen the fastening 2. A reservoir portion 17 of the apertures 16 in the washer 6 around the balls receives the material displaced during indention to allow full contact of the washer 6 with the fastener head 3 and joint surface 8. The hardened balls provide point loads for ready indentation upon minimal loading to prevent rotation of the fastener, obviating the need for a counter-torque wrench.
Inventors:
CLARKE RONALD C (US)
Application Number:
PCT/US2010/033763
Publication Date:
March 31, 2011
Filing Date:
May 05, 2010
Export Citation:
Assignee:
VALLEY FORGE & BOLT MFG CO (US)
CLARKE RONALD C (US)
CLARKE RONALD C (US)
International Classes:
F16B43/00; F16B31/02; F16B39/24
Foreign References:
| US20030031526A1 | 2003-02-13 | |||
| US20040234358A1 | 2004-11-25 | |||
| US20090103998A1 | 2009-04-23 | |||
| US20040086354A1 | 2004-05-06 |
Other References:
See also references of EP 2427664A4
Attorney, Agent or Firm:
DORIUS, Kirk et al. (7600B N. Capital of TX Hwy. Suite 35, Austin Texas, US)
Download PDF:
Previous Patent: EXPANDABLE SPINAL IMPLANT APPARATUS AND METHOD OF USE
Next Patent: MONITORING FASTENING LOADING
Next Patent: MONITORING FASTENING LOADING