Compact vacuum pump

Details Compact vacuum pump Compact vacuum pump

1985-02-19

1986-12-23

Croyle, Carlton R.

Pumps

Ambulant, body supported, or with carrying handle

417360, 137855, 418270, F04C 2502, F04C 2908

Patent

active

046310061

ABSTRACT:
The invention pertains to a lightweight and concise vaccum pump particularly suitable for servicing refrigeration systems. One end of a cylindrical electric motor casing is enclosed by a substantially cylindrical adapter upon which a pump assembly is mounted. The motor armature shaft extends through the adapter and the pump rotor is directly mounted thereon. A hollow shell affixed to the adapter encompasses the pump assembly defining a chamber thereabout which includes a lubrication sump. A synthetic plastic handle assembly attaches to the motor casing and includes a capacitor housing and a base is affixed to the lower side of the casing. Except for the handle and base the pump is of a substantially cylindrical configuration of a diameter similar to that of the motor casing, and the pump assembly includes lubrication and exhaust features which provide improved pumping conditions.

REFERENCES:
patent: 2739537 (1956-03-01), Sadler et al.
patent: 3117419 (1964-01-01), Brolund
patent: 3314599 (1967-04-01), Rollinger et al.
patent: 3838950 (1974-10-01), Andriulis
patent: 4088428 (1978-05-01), Bannistes et al.
patent: 4123201 (1978-10-01), Andriulis

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