Molded plastic pressure tank
US4579242A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1985 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Jul 29, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7156
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The improved tank construction includes two injection molded thermoplastic sections having overlapping male and female circumferential wall portions. The male wall portion includes a crowned bonding surface that diverges inwardly towards the central axis of the tank. The bonding surface extends from an external surface of the male tank section and terminates at a radial face that defines the innermost edge of the tank section. The female wall portion defined by the female tank section includes a uniform diameter segment which cooperates with the external surface of the male tank section to facilitate alignment during the spin welding process. A complementally shaped bonding surface forms part of the female wall portion which coacts with the crowned bonding surface of the male wall portion. Contact between the bonding surfaces at the commencement of the spin welding process occurs at a narrow intermediate region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.