Tire spreader
US5044607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Dec 20, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C25/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.