B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 27/10 (2006.01)
Patent
CA 2645483
Self-tightening snow chain for attachment to a vehicle wheel to provide traction. The preferred self-tightening snow chain includes a traction cable and a tensioning device including a housing having a top including a set of housing teeth, a bottom and at least one aperture; a lever interconnected to the housing; a ratchet spool within the housing having a set of ratchet teeth that mate with the housing teeth and a channel between upper and under surfaces to receive a cord that is interconnected with the ratchet spool; a tension spring that places a bias on the ratchet spool toward a wind-up direction; and a wave spring. A preferred tensioning device includes a cord sub-unit having two knobs, one on each end, and a grommet encircling the cord. A method of assembling the tensioning device is also disclosed.
La présente invention concerne des chaînes anti-dérapantes à serrage automatique à attacher aux roues d'un véhicule pour permettre la traction. L'option préférée de ces chaînes anti-dérapantes comprend un câble de traction et un dispositif de tension qui comprend un boîtier à couvercle comprenant un jeu de dents de boîtier, un fond et au moins une ouverture ; un levier connecté au boîtier, une bobine à rochet dans le boîtier à jeu de dents de rochets qui correspondent aux dents de boîtier et un canal enter les surfaces supérieures et inférieures afin de recevoir un cordon interconnecté à la bobine à rochet, un ressort de tension qui place le biais sur la bobine à rochet dans un sens d'enroulement et un ressort ondulé. Un dispositif de tension favori comprend un sous-système de cordon à deux poignées, l'une de chaque côté et un AEillet encerclant le cordon. Un procédé d'assemblage du dispositif de tension est également décrit.
Mccauley John J.
Stener Lester
Macrae & Co.
Peerless Chain Company
LandOfFree
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