[미국특허]
Overrunning coupling assembly including clustered pawls and method for controlling the engagement of planar members
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16D-041/16
F16D-041/00
출원번호
US-0226789
(2005-09-14)
등록번호
US-7344010
(2008-03-18)
발명자
/ 주소
Fetting, Jr.,Robert D.
Pawley,Brice A.
출원인 / 주소
Means Industries, Inc.
대리인 / 주소
Brooks Kushman P.C.
인용정보
피인용 횟수 :
42인용 특허 :
21
초록▼
An overrunning coupling assembly and a method of controlling the engagement of planar first and second members are provided wherein the assembly includes clustered pawls and their respective pawl-holding portions. The planar first and second members have inside surfaces extending generally normal to
An overrunning coupling assembly and a method of controlling the engagement of planar first and second members are provided wherein the assembly includes clustered pawls and their respective pawl-holding portions. The planar first and second members have inside surfaces extending generally normal to a first axis. The pawls include a forward set of free-floating pawls and a reverse set of free-floating, clustered pawls. The forward and reverse sets of pawls are movable between a notch-engaging, engaged position and a disengaged position. Because of the clustering, a control element, disposed between the first and second surfaces, need not be fully circular and is controllably rotatable about the first axis between first and second angular positions relative to the first member.
대표청구항▼
What is claimed is: 1. An overrunning coupling assembly comprising: a planar first member having an inside first surface; a planar second member having an inside second surface closely adjacent to the first surface, at least one of the members being mounted for rotation about a first axis; pawl-rec
What is claimed is: 1. An overrunning coupling assembly comprising: a planar first member having an inside first surface; a planar second member having an inside second surface closely adjacent to the first surface, at least one of the members being mounted for rotation about a first axis; pawl-receiving portions and pawl-holding portions formed on the members; a forward set of free-floating pawls and a reverse set of free-floating, clustered pawls, the pawls being received and retained in the pawl-holding portions but not physically secured to the pawl-holding portions, the pawls being movable between engaged and disengaged positions between the pawl-receiving and pawl-holding portions, the reverse pawls preventing rotation between the members in a reverse direction about the first axis in their engaged position and allowing rotation between the members in a forward direction about the first axis in their disengaged position; a first set of biasing members carried by the pawl-holding portions and urging the forward and reverse set of pawls outwardly from their respective pawl-holding portions; and a control element mounted for controlled, shifting movement between the surfaces relative to the pawl-holding portions and operable to control position of the reverse set of clustered pawls, the control element having at least one opening which extends completely therethrough to allow the reverse set of clustered pawls to extend therethrough to their engaged position in a first position of the control element and wherein the control element maintains the reverse set of clustered pawls in their disengaged position in a second position of the control element wherein each of the forward and reverse sets of pawls is clustered or grouped closely together in a curved line or row and wherein the control element is less than fully circular. 2. The assembly as claimed in claim 1, wherein relative rotation between the first member and the second member in the reverse direction about the first axis in the second position of the control element causes the pawl-receiving portions to act against the forward set of pawls to move the forward set of pawls towards their disengaged position against the urging of their biasing members to permit free-wheeling. 3. The assembly as claimed in claim 1, wherein the forward and reverse sets of pawls are received and retained in same member. 4. The assembly as claimed in claim 1, wherein the control element has opposite ends. 5. The assembly as claimed in claim 4, wherein the control element is nested within the member having the pawl-holding portions formed thereon. 6. The assembly as claimed in claim 4, wherein the control element has tabs formed at the opposite ends. 7. The assembly as claimed in claim 6, wherein the member having the pawl-holding portions includes retaining pads for guiding shifting movement of the control element at the tabs. 8. The assembly as claimed in claim 1, further comprising an operating member operatively connected to the control element to selectively shift the control element between its first and second positions. 9. The assembly as claimed in claim 1, wherein the control element comprises a plate-like member. 10. The assembly as claimed in claim 1, the first and second members comprise plate-like members. 11. An overrunning coupling assembly comprising: a planar first member having an inside first surface; a planar second member having an inside second surface closely adjacent to the first surface, at least one of the members being mounted for rotation about a first axis; pawl-receiving portions and pawl-holding portions formed on the members; a forward set of free-floating pawls and a reverse set of free-floating, clustered pawls, the pawls being received and retained in the pawl-holding portions but not physically secured to the pawl-holding portions, the pawls being movable between engaged and disengaged positions between the pawl-receiving and pawl-holding portions, the reverse pawls preventing rotation between the members in a reverse direction about the first axis in their engaged position and allowing rotation between the members in a forward direction about the first axis in their disengaged position; and a control element mounted for controlled rotation about the first axis relative to the pawl-holding portions between first and second angular positions between the surfaces and operable to control position of the reverse set of clustered pawls, the control element having at least one opening which extends completely therethrough to allow the reverse set of clustered pawls to extend therethrough to their engaged position in a first angular position of the control element and wherein the control element maintains the reverse set of clustered pawls in their disengaged position in a second angular position of the control element wherein each of the forward and reverse sets of pawls is clustered or grouped closely together in a curved line or row and wherein the control element is less than fully circular. 12. The assembly as claimed in claim 11, wherein relative rotation between the first member and the second member in the reverse direction about the first axis in the second angular position of the control element causes the pawl-receiving portions to act against the forward set of pawls to move the forward set of pawls towards their disengaged position to permit free-wheeling. 13. The assembly as claimed in claim 11, wherein the forward and reverse sets of pawls are received and retained in the same member. 14. The assembly as claimed in claim 11, wherein the control element has opposite ends. 15. The assembly as claimed in claim 14, wherein the control element is nested within the member having the pawl-holding portions formed thereon. 16. The assembly as claimed in claim 14, wherein the control element has tabs formed at the opposite ends. 17. The assembly as claimed in claim 16, wherein the member having the pawl-holding portions includes retaining pads for guiding angular movement of the control element at the axial tabs. 18. The assembly as claimed in claim 11, further comprising an operating mechanism operatively connected to the control element to selectively shift the control element between its first and second angular positions. 19. The assembly as claimed in claim 11, wherein the control element comprises a plate-like member. 20. The assembly as claimed in claim 11, wherein the first and second members comprise plate-like members. 21. A method of controlling the engagement of first and second members, the first member having an inside first surface, the second member having an inside second surface closely adjacent the inside first surface, at least one of the members being mounted for rotation about a first axis and pawl-receiving portions and pawl-holding portions formed on the members, the method comprising: providing a forward set of free-floating, pawls and a reverse set of free-floating, clustered pawls, the pawls being received and retained in the pawl-holding portions but not physically secured to the pawl-holding portions; urging the forward and reverse sets of pawls outwardly from their respective pawl-holding portions; providing a single control element between the first and second surfaces and being rotatable about the first axis relative to the pawl-holding portions, the control element having at least one opening which extends completely therethrough; and rotating the control element relative to the pawl-holding portions about the first axis, the at least one opening allowing the reverse set of clustered pawls to extend therethrough in an engaged position and be received within the pawl-receiving portions in a first angular position of the control element to prevent rotation between the members in a reverse direction about the first axis wherein the control element maintains the reverse set of clustered pawls in a disengaged position in a second angular position of the control element in which rotation between the members is allowed in a forward direction about the first axis wherein each of the forward and reverse sets of pawls is clustered or grouped closely together in a curved line or row and wherein the control element is less than fully circular. 22. The method as claimed in claim 21, further comprising guiding the control element during the step of rotating.
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