Safety hand pump

Details Safety hand pump Safety hand pump

1990-09-26

1992-10-20

Bertsch, Richard A.

Pumps

Miscellaneous

222385, 222189, 285357, 285341, 285336, F04B 2108

Patent

active

051565366

ABSTRACT:
This invention is a small hand piston type pump design to pump small quanity of flammable liquids safely from a drum. The pump has a grounding clip, and a bonding clip attached and a metal bung adapter to ensure that static build up during the pumping process is adequately grounded from not only the pump but the vessel into which the liquid is being pumped and the drum. The pump also contains a flame arrestor in the spout and a check ball and a strainer in the pickup tube to ensure that a fire within the pump will not extend into the drum and a strainer in the pickup tube to further arrest any flames. The pump is made out of carbon steel, glass and teflon so that the parts have good chemical resitance and are long lasting. The pump has a sealing device design for longjevity. This sealing device has a packing gland whose edges are beveled. It fits into a conically channel between the packing head and packing nut and when the packing nut is tighten the packing gland is forced towards the shaft.

REFERENCES:
patent: 629332 (1899-07-01), Bouhon
patent: 987583 (1911-03-01), Long
patent: 2336989 (1943-12-01), Kelleher et al.
patent: 3462539 (1969-08-01), Winston
patent: 3473479 (1969-10-01), Sundholm
patent: 3635669 (1972-01-01), Rubin
patent: 3743448 (1973-07-01), Dorn
patent: 3820800 (1974-06-01), Dorn
patent: 4265375 (1981-05-01), Flider
patent: 4275860 (1981-06-01), Brabazon
patent: 4403926 (1983-09-01), Stamper
patent: 4593940 (1986-06-01), Wilder
patent: 4717473 (1988-01-01), Burge et al.

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