Electric actuator

Details Electric actuator Electric actuator

1995-12-28

1996-12-17

Marmor, Charles A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

70277, 74 99A, 292144, 292201, 292DIG23, E05B 6520

Patent

active

055842062

ABSTRACT:
An actuator is disclosed, which comprises a drive motor, a rotary member to be rotated by the drive motor, and a plunger for reciprocating in its axial direction. The plunger has a first and second guide portions formed thereon. The actuator further comprises a guiding member held in the rotary member. The guiding member includes a first spiral guide surface for guiding the first guide portion therealong to move the plunger in a direction to protrude it, a second spiral guide surface for guiding the second guide portion therealong to move the plunger in a direction to retract it, a first position regulating surface for regulating the retraction of the plunger when it contacts with the first guide portion, and a second position regulating surface for regulating the protrusion of the plunger when it contacts with the second guide portion.

REFERENCES:
patent: 4518181 (1985-05-01), Yamada
patent: 4669283 (1987-06-01), Ingenhoven
patent: 4723454 (1988-02-01), Periou et al.
patent: 4941694 (1990-07-01), Bartel et al.
patent: 4978155 (1990-12-01), Kobayashi

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