Pump drive head backspin retarder

Details Pump drive head backspin retarder Pump drive head backspin retarder

1997-10-09

2000-10-24

Freay, Charles G.

Rotary expansible chamber devices

With frangible drive connection or clutch

166 68, F01C 2100, F04C 2900

Patent

active

061357405

ABSTRACT:
A pump drive head backspin retarder includes a vane pump having an impeller with a plurality of spring loaded vanes and a pawl clutch centrally disposed in the impeller and having a hub and a plurality of pawls. Each pawl is pivotally attached to the hub for movement between first and second positions. The impeller includes a plurality of pawl receiving recesses, whereby, for a first direction of rotation, pawls of the pawl clutch pivot to the first position corresponding to a disengaged state for providing no mechanical contact with the impeller and, for a second direction of rotation opposite the first, pawls of the pawl clutch pivot to the second position due to inertia corresponding to an engaged state thereby engaging corresponding pawl receiving recesses.

REFERENCES:
patent: 127009 (1872-03-01), Feite
patent: 3463279 (1969-08-01), Breisch et al.
patent: 3511348 (1970-05-01), Jonsson et al.
patent: 5503541 (1996-04-01), Barito et al.
patent: 5551510 (1996-09-01), Mills
Design Engineers Handbook, Bulletin 0224-B1, pp. i-12 to i-13, 1979.

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