1991-07-03
1993-04-27
Bertsch, Richard A.
Pumps
Miscellaneous
417440, F04B 2300, F04B 2100
Patent
active
052057267
ABSTRACT:
There is disclosed herein a small and compact vacuum pump which serves as a portable vacuum source. The pump basically includes a cylinder coupled with a handle, and a piston in the cylinder with another handle, along with a suitable valving assembly for allowing a vacuum to be drawn at an inlet of the pump. More particularly, there is also disclosed a tubing remover which can be attached to or form an integral part of the pump. The tubing remover comprises a lever and a fulcrum positioned in proximity to the vacuum port of the pump. One arm of the lever has an opening which is large enough to encircle the vacuum port, but smaller than the outside diameter of the tubing, such that the arm can be juxtaposed between the proximal end of the tubing and the pump. When the other arm of the lever is drawn towards the pump by a finger of the operator's hand, the arm proximating the tubing pushes the tubing away from the vacuum port. The above described motion of the lever is stabilized with the aid of a fork which embraces a portion of the pump.
REFERENCES:
patent: 3061915 (1962-11-01), Puryear
patent: 3612722 (1971-10-01), Neward
patent: 3715794 (1973-02-01), McCollum et al.
patent: 4806084 (1989-02-01), Neward
Basichas Alfred
Bertsch Richard A.
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