Stepper mechanical drive system

Details Stepper mechanical drive system Stepper mechanical drive system

2007-03-20

2007-03-20

Johnson, Vicky A. (Department: 3682)

Machine element or mechanism

Mechanical movements

Reciprocating to reciprocating

Reexamination Certificate

active

10464222

ABSTRACT:
A stepper mechanical drive system includes a carriage, a support for the carriage that permits the carriage to move bidirectionally along a travel direction, and a follower structure on the carriage, The follower structure has two ramp structures that each extends longitudinally along the travel direction of the carriage and includes a plurality of sawtooth ramp faces. An actuator structure is not on the carriage and is stationary relative to the travel direction of the carriage. The actuator structure has a pair of actuators, and each actuator includes an actuator arm having an actuator element thereon, wherein the actuator arm is movable so that the actuator element may be controllably contacted to at least one of the ramp structures, and a controllable actuator drive operable to move the actuator arm. Each actuator drive may also include a disengageable latch that disengagably retains the actuator arm in a selected position.

REFERENCES:
patent: 5959376 (1999-09-01), Allen
patent: 6307285 (2001-10-01), Delson et al.
patent: 6349605 (2002-02-01), Harju

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