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Patent Searching and Data


Title:
ASYMMETRIC DRAG FORCE BEARINGS FOR USE WITH PUSH-CABLE STORAGE DRUMS
Document Type and Number:
WIPO Patent Application WO/2012/024660
Kind Code:
A3
Abstract:
A pipe inspection system (100) may include a cable storage drum (110) and a length of resilient flexible push-cable. An asymmetric bearing device (350) supports the cable storage drum for rotation about the rotational axis in a pay-out direction and an opposite pay- in direction. In one embodiment, the asymmetric bearing device automatically decreases, without the for manual adjustment, an amount of friction exerted against rotation of the cable storage drum upon reversal of the direction of rotation of the cable storage drum from the pay-out direction to the pay-in direction.

Inventors:
KLEYN JAMES F (US)
CHAPMAN ERIC M (US)
OLSSON MARK
TURGEON MICHAEL E (US)
Application Number:
PCT/US2011/048534
Publication Date:
April 12, 2012
Filing Date:
August 21, 2011
Export Citation:
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Assignee:
SEEKTECH INC (US)
KLEYN JAMES F (US)
CHAPMAN ERIC M (US)
OLSSON MARK
TURGEON MICHAEL E (US)
International Classes:
F16C41/00; B65H75/44
Foreign References:
US20020134974A12002-09-26
US20030010591A12003-01-16
EP0403671A11990-12-27
Attorney, Agent or Firm:
TIETSWORTH, Steven C. (San Diego, California, US)
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