초록 ▼

A pair (20) of unidirection actuators are opposingly disposed coaxially about an elongated member (1) for controllably imparting a series of stepwise rotary movements thereto. An outer race (5) disposed within a housing (2) is rotationally reciprocated as a result of the axial reciprocation of a coa

A pair (20) of unidirection actuators are opposingly disposed coaxially about an elongated member (1) for controllably imparting a series of stepwise rotary movements thereto. An outer race (5) disposed within a housing (2) is rotationally reciprocated as a result of the axial reciprocation of a coaxial drive member (3) under the influence of reciprocation means (12, 15, 9). An overrunning clutch (6) converts the reciprocal rotary motion of the outer race (5) into a series of uniform unidirectional stepwise angular movements.

대표청구항 ▼

An actuator for imparting unidirectional stepwise rotary motion to an elongated member about a central axis, comprising: a housing, surrounding a portion of the elongated member and secured against rotary motion; an outer race, disposed within the housing and rotatably supported therewithin; an over

An actuator for imparting unidirectional stepwise rotary motion to an elongated member about a central axis, comprising: a housing, surrounding a portion of the elongated member and secured against rotary motion; an outer race, disposed within the housing and rotatably supported therewithin; an overrunning clutch, said clutch engageable between the outer race and the elongated member upon attempted relative rotation therebetween in the clockwise direction, and slippable between the outer race and the elongated member upon relative rotation therebetween in the counterclockwise direction; a drive member, axially reciprocable from and to a rest position and coaxial with the elongated member; means, operable only upon displacement of the drive member from the rest position, for engaging the drive member and the outer race for establishing a predetermined relative rotational orientation between the drive member and the outer race during the engagement thereof; means for reciprocating the drive member from and to the rest position; and means, operable upon engagement of the drive member and the outer race, for imparting a clockwise rotary motion to the outer race upon displacement of the drive member from the rest position, and a counterclockwise rotary motion to the outer race upon return of the drive member to the rest position.