Auxiliary Shaft having a ball-shaped end releasably mounted in a two-part sleeve, for hand tools
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A01B-001/22
B25G-003/38
출원번호
US-0326340
(1994-10-20)
발명자
/ 주소
Gauthier Serge (9150 Louis Lumire Rivire Des Prairies
Qc. CAX H1E 4E3)
인용정보
피인용 횟수 :
14인용 특허 :
0
초록▼
A three-part auxiliary shaft assembly to be mounted along a hand-tool shaft, comprises a two-part sleeve and an auxiliary shaft which is ball-shaped at one end. The sleeve has a top, a bottom and a symmetrical axis running from top to bottom, and is cut in half along the symmetrical axis to define t
A three-part auxiliary shaft assembly to be mounted along a hand-tool shaft, comprises a two-part sleeve and an auxiliary shaft which is ball-shaped at one end. The sleeve has a top, a bottom and a symmetrical axis running from top to bottom, and is cut in half along the symmetrical axis to define the two parts of the two-part sleeve. Each part has an inner hemi-housing parallel to the symmetrical axis of the sleeve, and running from the top to the bottom of the sleeve for tight-fitting half the cross-section of a portion of a hand-tool shaft. Near the top away from the inner hemi-housing, a second inner hemi-housing for half the ball-shaped end of the auxiliary shaft has an opening at the top, shorter than the diameter of the ball-shaped end of the auxiliary shaft. When the two parts of the sleeve are assembled, a housing is provided for the ball-shaped end of the auxiliary shaft, as well as a housing for the portion of a hand-tool shaft. These two parts are held with bolts positioned away from the opening at the top, so that over a certain pulling tension of the auxiliary shaft, it is releasable from its housing.
대표청구항▼
A three-part, auxiliary, back-saving safety shaft assembly to be mounted along a hand-tool shaft having a tool, and for said shaft assembly to be mounted near said tool, on said hand-tool shaft, comprising: an auxiliary shaft, and a two-part sleeve, said auxiliary shaft having one end and another en
A three-part, auxiliary, back-saving safety shaft assembly to be mounted along a hand-tool shaft having a tool, and for said shaft assembly to be mounted near said tool, on said hand-tool shaft, comprising: an auxiliary shaft, and a two-part sleeve, said auxiliary shaft having one end and another end, said one end of said auxiliary shaft being ball-shaped, said ball-shaped end having a diameter, and a center, said sleeve having a top, a bottom, and a symmetrical axis running from said top to said bottom, and said sleeve being cut in half along said symmetrical axis to define the two parts of said two-part sleeve, each part of said two-part sleeve, defining: an inner hemi-housing parallel to said symmetrical axis of said sleeve, and running from said top to said bottom of said sleeve, for tight fitting of half the cross-section of a portion of a hand-tool shaft having a tool, and said portion of a hand-tool shaft being near said tool, and each part of said two-part sleeve further defining an inner hemi-housing for receiving half of said ball-shaped end of said auxiliary shaft, said hemi-housing for receiving half of said ball-shaped end of said auxiliary shaft being adjacent to said top of said sleeve, and spaced from said inner hemi-housing for said tight fitting of half the cross-section of a portion of a hand-tool shaft, and said inner hemi-housing for said ball-shaped end having an opening at said top of said sleeve enabling a spherical portion of said ball-shaped end to be displaceable outside of said hemi-housing, the angle subtended by an arc of said spherical portion on said ball-shaped end, at the center of said ball-shaped end being from 105°to 135°, and said two parts of said sleeve being releasably fastened together with bolt means, pulling together said two parts of said sleeve, said bolt means being absent along said opening as defined in said hemi-housing for said ball-shaped end, and along said hemi-housing for said ball-shaped end adjacent to said opening, said two parts of said sleeve, when assembled, thus defining: a) an inner housing for said ball-shaped end, said opening, in each of said hemi-housings for said ball-shaped end, cooperating to define a common opening, in order: i) to hold the ball-shaped end, within said inner housing for said ball-shaped end, when the tension exerted on the auxiliary shaft is below a given pulling tension, for allowing rotation of said ball-shaped end within said inner housing for said ball-shaped end, and for enabling a spherical portion of said ball-shaped end to move out of said common opening, the angle subtended by an arc of said spherical portion on said ball-shaped end, at the center of said ball-shaped end being from 105°to 135°, ii) to allow sliding of said ball-shaped end from said inner housing for said ball-shaped end, through said common opening, when said pulling tension exerted on said auxiliary shaft is greater than said given pulling tension, said ball-shaped end exerting a force against said two parts of said sleeve at said common opening, such as to enlarge said common opening, and to instantaneously release said auxiliary shaft from said sleeve, and b) said inner hemi-housings for said tight fitting of half the cross-section of a portion of a hand- tool shaft, parallel to said symmetrical axis acting as a pair of jaws, in order to clamp said portion of a hand-tool shaft.
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