(19)
(11) EP 0 124 299 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.12.1986 Bulletin 1986/51

(43) Date of publication A2:
07.11.1984 Bulletin 1984/45

(21) Application number: 84302283

(22) Date of filing: 03.04.1984
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 04.04.1983 US 481972

(71) Applicant: EATON CORPORATION
 ()

(72) Inventor:
  • Wenker, Wayne Bernard
     ()

   


(54) Hydraulic gerotor motor and parking brake for use therein


(57) A lock mechanism is disclosed for use in association with a gerotor displacement mechanism of the type including an internally-toothed ring (23) and an externally-toothed star (27). The lock mechanism includes a lock member (81) and an actuating mechanism (83) including a backup member (85) which engages the lock member and an actuator (89). The actuator is in threaded engagement with a boss portion (71) of the ring whereby rotation results in movement radially inwardly, forcing the lock member into its adjacent volume chamber (29) to engage one of the external teeth of the star and prevent further orbital and rotational movement of the star.






Search report