IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0633351
(1984-07-23)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
3 |
초록
▼
A slip-on ratcheting drive assembly for a fastener driver, particularly a screwdriver, is adaptable for use with most common screwdrivers, and is versatile. The ratcheting drive assembly is simply moved into operative association with a conventional screwdriver handle. Typically the ratcheting drive
A slip-on ratcheting drive assembly for a fastener driver, particularly a screwdriver, is adaptable for use with most common screwdrivers, and is versatile. The ratcheting drive assembly is simply moved into operative association with a conventional screwdriver handle. Typically the ratcheting drive assembly includes an outer housing, a socket received within the outer housing and rotatable with respect to it, and a ratchet structure cooperating between the socket and housing to allow ratcheting rotation of the socket with respect to the housing. The socket is held in place within the housing by a releasable locking lever, and at the end of the socket opposite its open end a polygon shaped drive projection is provided. A socket adaptor acting between the ratchet and the socket receives the socket in either of two positions, the first position with the socket open end at the housing open end so that the socket can slip on a conventional screwdriver handle, and the second position wherein the socket drive projection extends outwardly from the housing. The ratchet mechanism preferably comprises a toothed ratchet wheel rotatable about an axis concentric with the socket, and a plurality of two-lobed pawls all mounted for rotation about a common axis of rotation parallel to the axis of rotation of the wheel. A selector knob has a spring attached to it, the spring in contact with pawls. The position of the selector knob determines which of the two lobes of each pawl will be in operative association with the ratchet wheel, so as to control the direction of ratcheting rotation.
대표청구항
▼
1. In combination: a fastener driver having a driver shank integral with an elongated handle; and means for ready removable operative disposition with said handle for effecting ratchet action of said handle, said means comprising: an outer housing; an insert received within said outer housing an
1. In combination: a fastener driver having a driver shank integral with an elongated handle; and means for ready removable operative disposition with said handle for effecting ratchet action of said handle, said means comprising: an outer housing; an insert received within said outer housing and rotatable with respect to said outer housing, said insert dimensioned and shaped to receive said handle so that there is no relative rotation between said insert and said handle when said handle is engaged by said insert; and ratchet means acting between said housing and said insert for effecting rotation of said insert and said housing together in one direction of rotation, but not the other. 2. In a combination as recited in claim 1, further comprising reversing means for acting on said ratchet means to reverse the direction in which said housing and said insert rotate together, and the direction in which they do not rotate together. 3. In a combination as recited in claim 1 wherein said insert comprises a socket having an open end, said socket dimensioned and shaped so that said handle is disposable in said socket open end so that said socket fits over and receives said handle. 4. In a combination as recited in claim 3 wherein said hanlde has generally a Swiss Cross shape in cross-section, and wherein said socket includes interior wall members also having a Swiss Cross cross-section corresponding to that of said handle. 5. In a combination as recited in claim 4 wherein said outer housing adjacent the open end of said socket has a shape of a truncated cone, and at the end thereof opposite the open end of said housing has an enlarged cylindrical form dimensioned to correspond generally to the size and shape of a human hand palm, said cylindrical portion having a diameter much greater than the largest cross-sectional dimension of said handle. 6. In a combination as recited in claim 3 further comprising a socket adaptor disposed between said socket and said ratchet means, and wherein said socket includes at a second end thereof, opposite the open end thereof, a drive projection having a polygonal cross-section; and wherein said socket adaptor includes first and second surface means, said first surface means cooperating with said socket drive projection when said socket open end is remote from said socket adaptor, and second surface means for cooperating with said socket open end when said socket drive projection is remote from said socket adaptor, and extends outwardly of said housing. 7. In a combination as recited in claim 6 wherein said socket adaptor first surface means comprises a bore for receiving said socket drive projection, said bore having substantially the same cross-sectional shape and dimensions as said socket projection; and wherein said second surface means comprises a castellated edge of said socket adaptor for cooperation with a corresponding castellated edge of said socket open end. 8. In a combination as recited in claim 6 further comprising circumferentially continuous groove means formed on said socket, and latch means mounted in said housing for cooperation with said groove means on said socket so that said releasable latching means holds said socket in said housing in either a first position thereof wherein said socket open end is remote from said socket adaptor, or a second position thereof wherein said socket drive projection extends outwardly from the bottom of said housing, yet said latching means allows relative rotation between said socket and said housing. 9. In a combination as recited in claim 1 wherein said outer housing has a significantly out-of-round cross-section to facilitate ready grasping thereof, and torque application therewith. 10. Apparatus as recited in claim 1 wherein said ratchet means comprises a toothed ratchet wheel mounted concentrically with said insert, and pawl means non-concentrically mounted with respect to said insert, and movable with respect to said housing. 11. In a combination as recited in claim 10 wherein said pawl means comprises a pawl pivotally mounted for rotation with respect to said housing about an axis generally parallel to the axis of rotation of said ratchet wheel, said pawl having first and second lobes, each of said lobes having teeth for cooperation with said toothed ratchet wheel; and selector means, including spring means, for biasing one or the other, but not both, of said pawl lobes into contact with said toothed ratchet wheel with said pawl teeth operatively engaging said ratchet wheel teeth, said selector means engaging said pawl and movable with respect to said pawl to effect control of which of said toothed lobes is in operative contact with said ratchet wheel teeth. 12. In a combination as recited in claim 11 further comprising a plurality of pawls mounted for rotation about said axis of rotation with respect to said housing, said pawls spaced from each other along said axis of rotation, and each of said pawls including toothed lobes wherein the teeth of the lobes of each pawl are slightly spaced from the teeth of the corresponding lobe of an adjacent pawl, so as to effectively minimize the amount of rotation between stops effected by said ratchet means. 13. A drive assembly for cooperation with a fastener driver, said drive assembly comprising: an outer housing; an elongated socket received within said outer housing and rotatable with respect to said outer housing, said socket having a first open end thereof, and a substantially closed second end thereof, said socket elongated in a dimension of elongation between said first and second ends, and said socket having formed interiorly thereof, at least adjacent said first open end thereof, peak and valley surface means; and ratchet means acting between said housing and said socket for effecting rotation of said socket and housing together in one direction of rotation, but not the other. 14. A drive assembly as recited in claim 13 wherein said outer housing has a significantly out-of-round cross-section to facilitate ready grasping thereof, and torque application therewith. 15. A drive assembly as recited in claim 13 wherein said peak and valley surface means comprises means defining a generally Swiss-Cross shaped cross-sectional opening. 16. A drive assembly as recited in claim 13 further comprising a socket adaptor disposed between said socket and said ratchet means, and wherein said socket includes at a second end thereof, opposite the open end thereof, a drive projection having a polygonal cross-section; and wherein said socket adaptor includes first and second surface means, said first surface means cooperating with said socket drive projection when said socket open end is remote from said socket adaptor, and second surface means for cooperating with said socket open end when said socket drive projection is remote from said socket adaptor, and extends outwardly of said housing. 17. A drive assembly as recited in claim 16 further comprising circumferentially continuous groove means formed on said socket, and latch means mounted in said housing for cooperation with said groove means on said socket so that said releasable latching means holds said socket in said housing in either a first position thereof wherein said socket open end is remote from said socket adaptor, or a second position thereof wherein said socket drive projection extends outwardly from the bottom of said housing, yet said latching means allows relative rotation between said socket and said housing. 18. A drive assembly as recited in claim 16 wherein said ratchet means comprises a toothed ratchet wheel having a central bore receiving said socket adaptor therein, said socket adaptor removably mounted for rotation together about an axis concentric with said socket and along the dimension of elongation thereof; and wherein said ratchet means further comprises pawl measn comprising at least one pawl having a pair of toothed lobes and mounted for pivotal movement with respect to said housing about an axis generally parallel to the axis of rotation of said ratchet wheel; and selector means, including spring means, for selectively biasing one of said pawl lobes into operative engagement with said ratchet wheel while the other of said ratchet lobes is spaced from operative association with said ratchet wheel. 19. A ratcheting assembly comprising: a toothed ratchet wheel mounted for rotation about an axis of rotation; pawl means comprising a plurality of pawls, each pawl having a pair of toothed lobes, the teeth of said lobes for operative cooperation with the teeth of said ratchet wheel; pivot means for pivotally mounting each of said pawls for pivotal movement about a common axis, said axis being generally parallel to the axis of rotation of said ratchet wheel, and said pawls spaced from each other in a dimension parallel to the axis of rotation of said ratchet wheel; the teeth formed on the lobes of the different pawls being displaced with respect to the teeth of another pawl so as to minimize the amount of rotation between stops of the ratchet wheel; and selector means, including spring means, for operatively engaging said pawls to selectively determine which lobe of each of said pawls will be in operative association with said toothed ratchet wheel, and which lobe of each pawl will be spaced from operative association with said ratchet wheel.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.