Substantially balanced bidirectionally pivoted valve operating a

Details Substantially balanced bidirectionally pivoted valve operating a Substantially balanced bidirectionally pivoted valve operating a

1996-11-05

1998-09-22

Ferensic, Denise L.

Fluid handling

With casing, support, protector or static constructional...

Vehicle

251 59, 251291, A01G 2509

Patent

active

058100512

ABSTRACT:
The valve operating apparatus cycles valves between open and closed positions. The valve operating apparatus includes a trailer for use in towing behind other vehicles, for instance, behind a pickup truck. The trailer includes an engine, pump, battery, reservoir and a bidirectionally oriented motor which is suspended from a telescoping extension bar. The operation of the valve operating apparatus is substantially balanced and requires very little effort by the operator to operate. Specifically, the operator does not have to push down or lift the apparatus as it is substantially balanced.

REFERENCES:
patent: 4502505 (1985-03-01), Moller
patent: 4687719 (1987-08-01), Smith
patent: 5101862 (1992-04-01), Leete
patent: 5257771 (1993-11-01), Portis et al.
patent: 5340078 (1994-08-01), Dean
patent: 5381996 (1995-01-01), Arnemann et al.

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