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US 4,802,387 AGranted
Reversible unidirectional transmission
OwnerThomas A. Williams, IIIinventor
Life of this patent
Estimating the term…
Abstract
A transmission is provided which has unidirectional output rotation in response to multidirectional input rotation. A reversing member is provided for changing the direction of rotation of the output member. A first mechansim rotates the output member in a first direction in response to a first direction of rotation of the input member, and this first mechanism does not drive the output member in response to a second direction of rotation of the input member. A second mechanism rotates said output member in the first direction in response to the second direction of rotation of the input member, and this mechanism does not drive the output member in response to the first direction of rotation of the input member. The axis of rotation of the input member and the axis of rotation of the output member are coaxial.
Claims27
A transmission comprising:
- an output member;
- first means rotating in a first direction for driving said output member in a first direction in response to a first direction of rotation of said input member, said first means rotating in a second direction and not driving said output member in response to a second direction of rotation of said input member;
- second means rotating in a first direction for driving said output member in said first direction in response to the second direction of rotation of said input member, said second means rotating in a second direction and not driving said output member in response to the first direction of rotation of said input member;
- third means for changing the rotation of said output member to a second direction by changing said first means to rotate in said second direction for driving said output member in said second direction in response to said second direction of rotation of said input member and said first means to rotate in said first direction and not driving said output member in response to the first direction of rotation of said input member, and by changing said second means to rotate in said second direction for driving said output member in said second direction in response to said first direction of rotation of said input member and said second means to rotate in said first direction and not driving said output member in response to the second direction of rotation of said input member;
- intermediate means for rotating said first means in said first direction and rotating said second means in said second direction in response to said first direction of rotation of said input member, and for rotating said first means in said second direction and said second means in said first direction in response to said second direction of rotation of said input member;
- and
- holding means for enabling said intermediate means to cause said second means to be rotated by said input member in the opposite rotational direction of said input member and for disabling said intermediate means thereby not causing said second means to be rotated by said input member in the opposite rotational direction of said input member.
4 more elements
A transmission comprising:
- an input member;
- an output member;
- a first concentric member concentric to said output member and attached to said input member;
- a second concentric member concentric to said output member spaced from and in a parallel plane to said first concentric member;
- at least one pinion engaging said first concentric member and said second concentric member;
- a first pawl disposed on said output member, said first pawl being associated with said first concentric member;
- a second pawl disposed on said output member, said second pawl being associated with said second concentric member;
- and
- reversing means having a first position for engaging each of said pawls with said concentric members in response to a first direction of rotation of said concentric members and for is engaging each of said pawls from said concentric members in response to a second direction of rotation of said concentric members and having a second position for engaging each of said pawls with said concentric members in response to a second direction of rotation of said concentric members and for disengaging each of said pawls from said concentric members in response to a first direction of rotation of said concentric members, wherein said output member rotates in the direction in which the engaged concentric members rotate thereby rotating said output member in a single direction irrespective of the rotation of said input member.
6 more elements
A transmission comprising:
- an input member;
- an output member;
- first rotatable means attached to said input member;
- second rotatable means freely rotatable with respect to said first rotatable means;
- intermediate means for rotating said first means in a first direction and rotating said second means in a second direction in response to said first direction of rotation of said input member, and for rotating said first means in said second direction and said second means in said first direction in response to a second direction of rotation of said input member;
- engaging means for directly engaging between one of said first means and said output member and between said second means and said output member depending on the direction of rotation of said first means an said second means thereby transferring rotation of said first means and said second means to said output member;
- reversing means providing a first position of said engaging means such that said engaging means transfers rotation of said input member in both said first and said second direction to rotate said output member in said first direction and providing a second position of said engaging means such that said engaging means transfers rotation of said input member in both said first and said second direction to rotate said output member in said second direction;
- and
- holding means for enabling said intermediate means to cause said second means to be rotated by said input member in the opposite rotational direction of said input member and for disabling said intermediate means thereby not causing said second means to be rotated by said input members in the opposite rotational direction of said input member thereby providing only direct engagement between said first means and said engaging means.
6 more elements
A transmission comprising:
- an input member;
- an output member;
- a first concentric member concentric to said output member and attached to said input member;
- a second concentric member concentric to said output member spaced from and in a parallel plane to said first concentric member;
- at least one pinion engaging said first concentric member and said second concentric member;
- a first pawl disposed on said output member, said first pawl being associated with said first concentric member;
- a second pawl disposed on said output member, said second pawl being associated with said second concentric member;
- reversing means having a first position for engaging each of said pawls with said concentric members in response to a first direction of rotation of said concentric members and for disengaging each of said pawls from said concentric members in response to a second direction of rotation of said concentric members and having a second position for engaging each of said pawls with said concentric members in response to a second direction of rotation of said concentric members and for disengaging each of said pawls from said concentric members in response to as first direction of rotation of said concentric members in response to a first direction of rotation of said concentric members, wherein said output member rotates in the direction in which the engaged concentric members rotate thereby rotating said output member in a signal direction irrespective of the rotation of said input members;
- and
- a holding means connected to said pinion when activated for preventing said pinion from being rotated in the rotational plane of the concentric members such that said second connecting member is caused to rotate in the opposite rotational direction of said input member and when deactivated for permitting said pinion to be rotated in the rotational plane of the concentric members thereby not causing said second means to be rotated in the opposite rotational direction of said input member.
7 more elements
Dependencies are inferred from the claim text.