Expansible chamber devices – Convertible – or changeable by assembly or disassembly
Patent
1998-04-23
1999-11-16
Denion, Thomas E.
Expansible chamber devices
Convertible, or changeable by assembly or disassembly
92128, 92146, 92161, F01B 2904
Patent
active
059837799
ABSTRACT:
A positive displacement type pump used for applications such as pressurizing beverage dispensing containers, filling fire extinguishers, and pressuring welding tanks. CO.sub.2 or similar fluids are drawn into and discharged through the pump by a reciprocating piston driven by a rotating eccentric main bearing mounted on a bearing frame. The bearing frame comprises an open, unsealed pair of structural plates connected by tie rods, the main bearing itself being sealed by one of two seal arrangements to make it easily convertible between oil-lubricated and oil-free operation. For oil-lubricated operation, the main bearing is supplied with a surrounding sealed bearing sleeve compressed between the plates of the bearing frame. For oil-free operation, the main bearing is internally sealed. The main bearing is driven by a shaft supported on bearings in the plates, the bearings also being changeable between sealed and unsealed bearings for oil-free and oil-lubricated operations, respectively.
REFERENCES:
patent: 1695721 (1928-12-01), Smith
patent: 3185042 (1965-05-01), Hastings
patent: 4534272 (1985-08-01), Irwin
patent: 4621566 (1986-11-01), Johnson et al.
Special Services, CO.sub.2 Pump Schematic, c.1981.
CS&P Cryogenics, Inc. Pump Brochure, Houston, Texas c. 1989.
Hydro-Test Products, Inc., Engineered Service Equipment, "Model SC-5 Carbon Dioxide--Nitrous Oxide--Liquid Halon Transfer Unit" brocures, 1987 Stow, Massachusetts.
Woodland Cryogenics Inc., Instruction Manual W50 CO.sub.2 /N.sub.2 O Pump, Philadelphia, Pennsylvania, 1989.
CARDOX, Operation and Service Manual Carbon Dioxide Cylinder Filling Unit, S/N 1-042-0050, pp. 1-16, c. 1980's.
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