US 12,215,619 B2
Hybrid pump apparatus
Paul Shepherd, Hampton in Arden (GB); and Sreekanth Gopinathan Nair, Glenfield (GB)
Assigned to CONCENTRIC BIRMINGHAM LIMITED, Birmingham (GB)
Filed by CONCENTRIC BIRMINGHAM LIMITED, Birmingham (GB)
Filed on Jan. 4, 2022, as Appl. No. 17/568,536.
Claims priority of application No. 2100078 (GB), filed on Jan. 5, 2021.
Prior Publication US 2022/0213833 A1, Jul. 7, 2022
Int. Cl. F01P 5/12 (2006.01); F04D 13/02 (2006.01); F04D 13/06 (2006.01)
CPC F01P 5/12 (2013.01) [F04D 13/021 (2013.01); F04D 13/06 (2013.01); F01P 2005/125 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A vehicle hybrid pump apparatus comprising:
a pump subassembly;
an electrical drive arranged to selectively drive the pump subassembly;
a mechanical drive comprising a driven member configured to receive a drive torque; and
a clutch in a load path between the driven member and the pump subassembly, the clutch being movable between a first condition in which the driven member drives the pump subassembly and a second condition in which the driven member can rotate freely relative to the pump subassembly;
in which the clutch is a dog clutch;
wherein the clutch is biased to move to the first condition upon interruption of electrical power to the electrical drive.