Multi-injection head for windshield chip and crack repair
US6500366B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Dec 31, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/3052
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Despite the disadvantage of reflexing a windshield, and consuming a multiple of the time taken with a single viscosity resin repair; it is generally accepted that most windshield repairs should utilize multiple viscosity resins. The multiple injection head not only eliminates the disadvantages associated with using resins of different viscosities, but additionally produces a smoother and stronger repair. The multiple injection head for injection of resins having different viscosities into a chip/crack comprises: a) a plunger housing having two upright cylindrical openings therethrough, each opening having an upper internally threaded portion and a lower chamber portion; and, b) two generally cylindrical plungers each having an upper portion adapted to be hand turned, and an intermediate portion matingly threaded with the openings. When the resins having different viscosities respectively fill the chamber portions, the plungers can be turned into the threaded portions of the openings controllably and selectively forcing the resins through the openings into a crack/chip therebelow on the windshield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.