1989-12-20
1991-09-03
Watson, Robert C.
B66F 324
Patent
active
050446070
ABSTRACT:
An apparatus for spreading the bead of a pneumatic tire from a rim has a double acting piston and cylinder assembly that moves to an extended spread position and a retracted position. The piston and cylinder assembly has a cylinder, a piston slideably disposed in the cylinder and a piston rod connected to the cylinder. A first jaw connected to the piston rod is adapted to engage the rim supporting the tire. A second jaw is secured to the cylinder for engagement with the bead of the tire. A rod and tube guide structure connected to the first jaw in the cylinder maintains the jaws in longitudinal alignment during the extension and contraction of the piston and cylinder assembly. A control valve mounted on the cylinder has a pair of valving members interconnected with a pivoted beam so that the valving members function together to selectively move the jaws to an expanded spreading position and a retracted position.
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The tire spreaders brochure, "Tire Spreaders", p. 112, Akron, Ohio.
Haugen Ronald F.
Murphy David T.
Vix Design Products, Inc.
Watson Robert C.
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