Apparatus for grooving tires
US4081017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1976 |
| Grant date | Mar 28, 1978 |
| Priority date | — |
| Expiry date | Sep 27, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/68
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A machine used in the renewal of large earthmover type tires, wherein the worn lugs are completely removed from the tire casing and replaced with convolutions of unvulcanized rubber material. The machine is provided with a heated knife blade which is utilized to cut a series of grooves in the unvulcanized rubber material of the tread in accordance with a pattern mounted on the machine. The pattern consists of a cam with a curved outer periphery which is monitored as the cam rotates on the machine. The depth to which the knife cuts into the unvulcanized rubber material as it moves transversely across the tread, is varied in accordance with the periphery of the cam being monitored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.