B - Operations – Transporting – 63 – B
Patent
B - Operations, Transporting
63
B
B63B 21/20 (2006.01) A01K 87/00 (2006.01) A63B 59/14 (2006.01) B60D 1/155 (2006.01) F16M 11/20 (2006.01) F16M 11/40 (2006.01)
Patent
CA 2069205
ABSTRACT A collapsible member comprising a tensioning means, resilient means to be tensioned, said resilient means being of a first predetermined length and being engaged with the tensioning means, rigidifying means being of a second collective predetermined length shorter than the first predetermined length located with said resilient means, and anchoring means to anchor an end of the resilient means to be tensioned, wherein moving said tensioning means to a first position provides sufficient tension of the resilient means wherein the rigidifying means and the resilient means result in an overall length of said collapsible member substantially equal to the second collective predetermined length, wherein moving said tensioning means to a second position provides sufficient relief of tension of the resilient means wherein the rigidifying means is untensioned resulting in an overall length of said collapsible member substantially equal to the first predetermined length wherein in the tensioned position, the member cannot be manually bent or untensioned without moving said tensioning means to a second position.
Heenan Blaikie Llp
Whitehead Nelson John
LandOfFree
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