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US 5,658,419 AGranted
Curing envelope spreader for use in a tire retreading process
OwnerThomas F. Herron, George Jeffrey Harrisinventors
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Abstract
A curing envelope spreader used to encase a tire during a tire retreading process. The curing envelope spreader includes a frame and a plurality of a curing envelope engaging means mounted to the frame. Each of the curing envelope engaging means is movable in an generally radially outward path to spread the curing envelope. An associated method of retreading a tire is also provided.
Claims25
An apparatus for spreading a curing envelope used to encase a tire during a tire retreading process, said apparatus comprising:
- a frame;
- a plurality of curing envelope engaging means mounted to said frame, each of said curing envelope engaging means movable in a generally radially outward path to spread said curing envelope;
- and
- each of said curing envelope engaging means includes (i) an arm having a frame engaging portion pivotably mounted to said frame and hand engaging portion opposite said frame engaging portion;
- (ii) a hand having an arm engaging portion pivotably mounted to said hand engaging portion of said arm and a curing envelope engaging portion opposite said arm engaging portion and (iii) a pantograph rod having a first end portion pivotably mounted to said frame and a second end portion pivotably mounted to said hand, said pantograph rod is constructed and arranged to remain generally parallel to said arm during movement of said curing envelope engaging means so that said hand moves along said generally radially outward path.
2 more elements
Dependencies are inferred from the claim text.