Presses – With alarm – signal – indicator – or test means
Patent
1978-01-23
1980-01-08
Wilhite, Billy J.
Presses
With alarm, signal, indicator, or test means
100269R, 100289, 264 17, 425170, 425177, B30B 1500
Patent
active
041822382
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 external spoke-like ribs and is recessed to form a catch basin to retain liquid spill from piston chamber bleed lines upon initial mounting of the cover.
REFERENCES:
patent: 2864125 (1958-12-01), Kelley
patent: 2887946 (1959-05-01), Barnes et al.
patent: 3450039 (1969-06-01), Ashbrook
Lawler, deceased John K.
Lawler, executrix by Doris G.
Mitchell, Sr. John W.
Oyama Kenneth H.
Johnson Howard L.
Wilhite Billy J.
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