Motor locking unit
First Claim
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1. A motor locking unit comprising:
- a locking motor having a shaft;
a locking disc adapted for connection to and movement with the shaft of a motor which is to be locked, said locking disc having;
(a) a hub disposed perpendicular to and centered on the axis of said shaft of said locking motor, and(b) a plurality of alternating spaces and ridges extending radially outward of said hub of said locking disc;
a locking member having;
(a) a hub disposed perpendicular to and centered on the axis of said shaft of said locking motor,(b) a plurality of arms extending radially outward from said hub of said locking member and toward said locking disc, and(c) a plurality of fingers at radially outer ends of said arms engaging said locking disc in said spaces and between said ridges when said locking member is moved longitudinally of the axis of said shaft of said locking motor; and
means for coupling said shaft of said locking motor to said hub of said locking member to impart to said hub of said locking member, in response to rotary movement of said shaft of said locking motor, longitudinal movement along the axis of said shaft of said locking motor in;
(a) a first direction in response to rotary movement of said shaft of said locking motor in a first direction to move said fingers of said locking member into said spaces and between said ridges of said locking disc, and(b) a second direction, opposite to the first direction of longitudinal movement of said hub of said locking member, in response to rotary movement of said shaft of said locking motor in a second direction, opposite to the first direction of rotary movement of said shaft of said locking motor to move said fingers of said locking member out from said spaces and between said ridges of said locking disc.
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Abstract
A locking unit for a motor which is to be locked in which a plurality of fingers at the ends of flexible arms, coupled to a locking motor, move into and out from engagement with a plurality of spaces bounded by ridges in a member which is connected to the shaft of the motor to be locked.
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Citations
13 Claims
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1. A motor locking unit comprising:
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a locking motor having a shaft; a locking disc adapted for connection to and movement with the shaft of a motor which is to be locked, said locking disc having; (a) a hub disposed perpendicular to and centered on the axis of said shaft of said locking motor, and (b) a plurality of alternating spaces and ridges extending radially outward of said hub of said locking disc; a locking member having; (a) a hub disposed perpendicular to and centered on the axis of said shaft of said locking motor, (b) a plurality of arms extending radially outward from said hub of said locking member and toward said locking disc, and (c) a plurality of fingers at radially outer ends of said arms engaging said locking disc in said spaces and between said ridges when said locking member is moved longitudinally of the axis of said shaft of said locking motor; and means for coupling said shaft of said locking motor to said hub of said locking member to impart to said hub of said locking member, in response to rotary movement of said shaft of said locking motor, longitudinal movement along the axis of said shaft of said locking motor in; (a) a first direction in response to rotary movement of said shaft of said locking motor in a first direction to move said fingers of said locking member into said spaces and between said ridges of said locking disc, and (b) a second direction, opposite to the first direction of longitudinal movement of said hub of said locking member, in response to rotary movement of said shaft of said locking motor in a second direction, opposite to the first direction of rotary movement of said shaft of said locking motor to move said fingers of said locking member out from said spaces and between said ridges of said locking disc. - View Dependent Claims (2, 3, 6, 7, 8, 9, 10, 11, 12, 13)
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4. A motor locking unit according to claim wherein said coupling means include:
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(a) an externally threaded member to which rotary movement of said shaft of said locking motor is imparted, (b) an internally threaded member fixed to said hub of said locking member along the axis of said shaft of said locking motor and engaged by said externally threaded member, and (c) means for restraining rotary movement of said locking member. - View Dependent Claims (5)
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Specification