Valve service box and method of making
US5327925A · kind A · utility
38Cited by
10References
8Claims
0Family size
Inventor
Key dates
| Filing date | Dec 14, 1993 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Dec 14, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7021
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A kit for forming a valve service box (10). The kit includes a plastic service valve housing (24) and a cover box assembly (22). The cover box assembly includes a plastic cover housing (32). Each of the housings (24 and 32) is provided with a cylindrical smooth wall bore (24.21 or 32.21) which may closely receive one end of a length of polyvinyl chloride pipe (26) of an appropriate uniform diameter. The housings (24 and 32) can be bonded by a conventional solvent welding process to the piece of plastic pipe (26) to form the valve service box, the plastic pipe (26) having been cut in the field to be of a correct length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.