Seal construction for a mold structure for encapsulating glass with a gasket
US4732553A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 6, 1987 |
| Grant date | Mar 22, 1988 |
| Priority date | — |
| Expiry date | Jul 6, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C33/0044
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A unique dynamic seal assembly is used in a mold structure for encapsulating a glass window assembly with a gasket. The seal assembly resiliently supports the window assembly and cooperates with the mold structure for defining a gasket forming cavity. The mold structure typically includes two cooperating mold sections, each of which can be provided with a groove for receiving a separate dynamic seal assembly. Each seal assembly includes a sealing body having a sealing surface which faces and is adapted to sealingly contact the window assembly. The seal assembly also includes a first fluid filled bladder positioned between the sealing body and a bottom of the groove in the mold section. When increased pressure is applied to a local area of the seal as a result of a contour difference between the seal and the window assembly, the bladder deforms to automatically transfer at least a portion of the applied pressure to adjacent areas of the seal. A second fluid filled bladder is positioned between the sealing body and a side wall of the groove to force the sealing body against the opposite side wall of the groove. The sealing body can be provided with a strip of Teflon material for seal…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.