Patent ID: 7195464

Claim:
A hydraulic axial piston pump, comprising: fluid delivery and intake; a cylinder body; pistons; a corresponding head that closes at a first side said block; a containment casing that flanges at a second, opposite side of said block; a plate contained in said casing for actuating said pistons of the pump; an electric motor coupled to said casing that is functionally coupled to said plate; a microswitch electrically connected to said electric motor; a high-pressure bypass valve inserted in a corresponding seat of said cylinder body and functionally connected to the delivery and the intake of said pump; reversible locking means for locking said high-pressure bypass valve that is kinematically connected to said microswitch; a corresponding kinematic system for connection of the microswitch to said bypass valve; and cables for electrical connection to said electric motor; and wherein said reversible locking means comprises a retention element that is transversely insertable with respect to said seat of the cylinder body, in a corresponding receptacle formed in said cylinder body without structure discontinuity of said bypass valve, said bypass valve having a head that is integrated in a shell external with respect to said cylinder body and which encloses said microswitch and said kinematic system, said electrical connection cables further exiting from the inside of said shell.