Self contained pressure vessel
US4182238A · kind A · utility
Inventors
Key dates
| Filing date | Jan 23, 1978 |
| Grant date | Jan 8, 1980 |
| Priority date | — |
| Expiry date | Jan 23, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C13/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A transparent, generally cylindrical, wide-mouth pressure retaining vessel or container cast of synthetic resin with a surrounding side wall formed by successively downwardly inset, annular wall segments, and externally reinforced by integral vertical ribs with successive annular edges of the inner stepped face providing support ledges adapted to hold removable shelves upon which freshly cast dentures, acrylic hobby items, pressure-curable art objects, etc. as well as fermentable foodstuff and gas-generating chemicals may be placed for exposure to externally applied and/or internally generated fluid pressure (gas or liquid). Necessity for retention clamps is eliminated by a threadedly mounted closure which carries a manually operable, threaded piston stem disposing a piston in an open-bottom chamber of the cover, which chamber projecting into a container full of liquid causes the latter to fill the piston chamber upon the cover being mounted on the container. This forms a hydraulic ram for application of pressure to objects immersed in the contained fluid. Air supplied under pressure through an inlet valve may be substituted in whole or part for liquid. The cover is reinforced by e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.