Coupling structure for plastic pipe or tubing
US4480855A · kind A · utility
28Cited by
16References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Mar 11, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S285/921
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plurality of internal couplers (A, B, C. D) are integrally connected end to end in a single tubing construction of indeterminant length. Between each coupler is an annular, frangible region (14, 24) of thin plastic. In the field, the individual couplers are readily broken manually from the tubing construction. Each coupler includes a plurality of cleats (40) which are partially surrounded by a region (50) of relatively thin plastic material. The couplers are manufactured by continuously blow molding a sleeve of softened plastic into the tubing construction of indeterminent length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.