Engine driven vacuum pump

Details Engine driven vacuum pump Engine driven vacuum pump

F - Mech Eng,Light,Heat,Weapons

02

B

123/257

F02B 39/02 (2006.01)

Patent

CA 1098401

Abstract of the Disclosure An engine driven vacuum pump combining a two-stage, low noise demountable pump assembly with a camshaft driven eccentric drive arrangement having internal oil distribution and pumping means for lubricating the drive and pump pushrod elements. A check valve in the cover of the pump assembly defines a second stage pumping chamber which increases pump efficiency while at the same time cyclically closing the pump outlet to reduce external noise attributable to gas dis- charge from the primary pumping chamber.

353614

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