Sprocket wheel
First Claim
Patent Images
1. A sprocket wheel for a tracked vehicle comprising:
- a unitary moulded solid urethane body of a generally annular configuration and having means for attachment to a hub member,a plurality of teeth projecting radially from said body, said teeth including;
(i) a urethane base moulded as an integral part of said body; and
(ii) a plurality of individual metal inserts moulded into the urethane body and each providing a grouser bar surface occupying an inter-tooth valley between each adjacent pair of teeth.
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Accused Products
Abstract
A sprocket wheel for a tracked vehicle, the sprocket wheel being in the form of an annular body having teeth integrally moulded of elastomeric material, the teeth including metal inserts moulded therein and providing track engaging surfaces in the inter-tooth valleys about the sprocket wheel.
52 Citations
14 Claims
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1. A sprocket wheel for a tracked vehicle comprising:
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a unitary moulded solid urethane body of a generally annular configuration and having means for attachment to a hub member, a plurality of teeth projecting radially from said body, said teeth including; (i) a urethane base moulded as an integral part of said body; and (ii) a plurality of individual metal inserts moulded into the urethane body and each providing a grouser bar surface occupying an inter-tooth valley between each adjacent pair of teeth. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A sprocket wheel for a tracked vehicle comprising a unitary moulded solid urethane body of a generally annular configuration and having means for attachment to a hub member, a plurality of teeth projecting radially from said body, said teeth including a urethane base moulded as an integral part of said body and metal inserts moulded into the urethane body and providing grouser bar engaging surfaces on said teeth, said sprocket wheel having an inner side surface and an outer side surface, said grouser bar engaging surface extending between said side surfaces, said grouser bar engaging surface being defined by each insert occupying the inter-tooth valley between each adjacent pair of teeth, said sprocket wheel having a tooth profile at the inner side surface thereof larger than the tooth profile at the outer side surface thereof, at least a portion of said grouser bar engaging surface in each inter-tooth valley sloping from the inner to the outer side surface, each insert in transverse cross section having a main body portion sloping from said inner side surface to said outer side surface and providing a concave upper surface, each insert taken on a radial plane being of open V-shape cross-section and having a flange portion extending back under the main body portion away from the edge at the outer side surface, said insert having a central vertical web extending between said main body portion and said flange.
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14. A segment of a sprocket wheel having opposite end surfaces for abutment with end surfaces of other like segments to form a complete sprocket wheel of generally annular configuration for attachment to a hub member of a vehicle, said segment comprising a unitary moulded arcuate shaped elastomer body having teeth formed integrally with the body and projecting radially therefrom, and a plurality of individual metal inserts each being moulded into said body for providing track engaging surfaces between said teeth, each opposite end surface of said segment being on a line cutting midway through one of said inserts.
Specification