Manual adjustment device for adjusting a setting member

Details Manual adjustment device for adjusting a setting member Manual adjustment device for adjusting a setting member

1992-09-11

1993-11-16

Miller, Carl S.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

74625, F02D 3100, F16H 3300

Patent

active

052613720

ABSTRACT:
A manual adjustment device permits emergency operation of a vehicle if a stepping motor that normally adjusts the position of a setting member between two limit positions becomes inoperative due to an electrical malfunction. The rotor shaft (19) of the stepping motor (3) is provided with teeth (29). A pinion (31) can be brought into engagement with the teeth (29) against the force of a coil spring (35). The pinion (31) is disposed inside the stepping motor housing (17) and is mounted on an adjustment shaft (33) that extends through an opening in the housing (17). A manual adjustment element (51; 105) is disposed outside of the housing (17) and is connected to the adjustment shaft (33). The manual adjustment element (51; 105) can be manipulated to press the pinion (31) into engagement with the teeth (29) and to then rotate the rotor shaft (19).

REFERENCES:
patent: Re30135 (1979-11-01), Fitzwater
patent: 2096251 (1937-10-01), Knight
patent: 2324211 (1943-07-01), Hodgson
patent: 2327980 (1943-08-01), Bryant
patent: 4665872 (1987-05-01), Eheim
patent: 4745900 (1988-05-01), Thudt
patent: 4873959 (1989-10-01), Law
patent: 4966266 (1990-10-01), Yamada
patent: 5003702 (1991-04-01), Han

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