| 摘要 |
A traction device (5), e.g. an elastomer shroud or casing, having moulded treads or ribs (20). The device (5) encapsulates a wheel or tyre (110) of a vehicle and is fixed in place by metal locking hooks (125 a, 125b) mounted on hinge pin (130a) and engageable with pin (130b). Tension and grip is applied to the traction device (5) by inflating a bladder (131) positioned between the device (5) and wheel/tyre (110). Air is introduced via an air valve (80) through a communication duct (60). The traction device (5) essentially becomes an integral member with the vehicle wheel or tyre, enhancing the traction of the drive wheels.
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