IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0663305
(1984-10-22)
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발명자
/ 주소 |
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대리인 / 주소 |
Fulwider, Patton, Rieber, Lee & Utecht
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인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
▼
An improved wrench includes a rigid band extending between a pair of spaced-apart end plates which are supported directly upon a common threaded shaft. In a preferred form of the invention, the band has a plurality of sequential and incremental flat surfaces extending along one edge between the end
An improved wrench includes a rigid band extending between a pair of spaced-apart end plates which are supported directly upon a common threaded shaft. In a preferred form of the invention, the band has a plurality of sequential and incremental flat surfaces extending along one edge between the end plates, and a file-like inner gripping surface strengthened by a V-shaped ridge forming the remainder of the band. As the shaft is rotated by hand about its longitudinal axis, one end plate remains generally stationary with respect to the shaft while the other end plate moves along the shaft either toward or away from the stationary end plate, depending on the direction of shaft rotation. When placed about a portion of an article such as an oil filter or the like, movement of the end plates toward one another causes the inner surfaces of the band to substantially uniformly grip the article about its circumference. This permits the application of high torque forces to the article without any slippage of the wrench about the article.
대표청구항
▼
1. An adjustable oil filter wrench, comprising: a handle; a threaded shaft securely attached to and extending from said handle, said shaft terminating at an expanded head; a stationary plate having an enlarged aperture through which a portion of said shaft which is generally adjacent said expan
1. An adjustable oil filter wrench, comprising: a handle; a threaded shaft securely attached to and extending from said handle, said shaft terminating at an expanded head; a stationary plate having an enlarged aperture through which a portion of said shaft which is generally adjacent said expanded head freely passes, and an integral retainer strap which forms a retaining space wherein said expanded head is loosely situated; a traveling plate having an aperture through which said shaft extends; means for moving said traveling plate along the length of said shaft in response to rotation of said shaft about its longitudinal axis, said traveling plate moving toward or away from said stationary plate depending on the direction of rotation of said shaft; and a rigid band extending between said stationary plate and said traveling plate, said rigid band including a plurality of sequential and incremental flat surfaces extending generally along one edge thereof, and a file-like inner gripping surface strengthened by a V-shaped ridge forming the remainder of said band. 2. A wrench as set forth in claim 1, wherein said moving means comprises a threaded nut which is securely attached to said traveling plate and aligned with said aperture through which said shaft extends. 3. A wrench as set forth in claim 1, including means for reducing wear between said expanded head and said stationary plate caused by the rotation of said shaft about its longitudinal axis. 4. A wrench as set forth in claim 3, wherein said reducing means comprises a washer. 5. A wrench as set forth in claim 1, wherein said plurality of sequential and incremental flat surfaces is situated in a different cross-sectional plane than said file-like inner gripping surface. 6. A wrench as set forth in claim 1, wherein said file-like inner gripping surface is split into two separate segments which are separated by and integrally connected to said V-shaped ridge. 7. A wrench as set forth in claim 6, wherein a first of said segments is situated between said plurality of flat surfaces and said V-shaped ridge, and extends between said stationary and traveling plates. 8. A wrench as set forth in claim 7, wherein a second of said segments extends along the opposite edge of said band with respect to said plurality of flat surfaces. 9. A wrench as set forth in claim 1, wherein said shaft combines with said band to completely encircle a portion of the circumference of an oil filter, said shaft being positioned tangentially to the nearest portion of the outer surface of the filter when said wrench is properly adjusted for the twisting of the filter. 10. An adjustable wrench, comprising: a rigid band having a plurality of sequential and incremental flat surfaces extending along one edge thereof, and a file-like inner gripping surface extending along the opposite edge, said band being formed to have a curvature generally resembling a portion of a circle; a first end plate rigidly attached to a first end of said band, said first end plate being oriented to extend perpendicularly outwardly from that portion of said band to which it is attached; a second end plate rigidly attached to a second end of said band, said second end plate being oriented to extend perpendicularly outwardly from that portion of said band to which it is attached; a shaft upon which said first and second end plates are directly mounted; and means for moving said end plates toward and away from one another, movement of said end plates toward one another causing said wrench to tighten about an article surrounded by said band and said shaft, and movement of said end plates away from one another causing said wrench to become loosened about an article surrounded by said band and said shaft. 11. A wrench as set forth in claim 10, wherein said plurality of sequential and incremental flat surfaces is situated in a different cross-sectional plane than said file-like inner gripping surface. 12. A wrench as set forth in claim 11, wherein said file-like inner gripping surface is split into two separate segments, each extending the length of said band, said segments being separated by and integrally connected to a V-shaped strengthening ridge. 13. A wrench as set forth in claim 12, wherein a first of said segments is situated between said plurality of flat surfaces and said V-shaped ridge. 14. A wrench as set forth in claim 13, wherein a second of said segments extends along the opposite edge of said band with respect to said plurality of flat surfaces. 15. A wrench as set forth in claim 10, wherein said shaft provides a handle which can be grasped and pulled to apply a torque force to the article through said wrench. 16. A wrench as set forth in claim 10, wherein said shaft includes an expanded head at one end thereof. 17. A wrench as set forth in claim 16, wherein said first end plate includes an enlarged aperture through which a portion of said shaft which is generally adjacent said expanded head freely passes, and an integral retainer strap which forms a retaining space wherein said expanded head is loosely situated. 18. A wrench as set forth in claim 17, wherein said second end plate includes an aperture through which said shaft extends, and a threaded nut which is aligned with said aperture. 19. An adjustable oil filter wrench, comprising: a handle; a threaded shaft securely attached to and extending from said handle, said shaft terminating at an expanded head; a stationary plate having an enlarged aperture through which a portion of said shaft which is generally adjacent said expanded head freely passes, and an integral retainer strap which forms a retaining space wherein said expanded head is loosely situated; means for reducing wear between said expanded head and said stationary plate caused by the rotation of said shaft about its longitudinal axis; a traveling plate having an aperture through which said shaft extends; means for moving said traveling plate the length of said shaft in response to rotation of said shaft about its longitudinal axis, said traveling plate moving toward or away from said stationary plate depending on the direction of rotation of said shaft, said moving means including a threaded nut which is securely attached to said traveling plate and aligned with said aperture through which said shaft extends; and a rigid band extending between said stationary plate and said traveling plate, said rigid band including a plurality of sequential and incremental flat surfaces extending along one edge, and a file-like inner gripping surface strengthened by a V-shaped ridge forming the remainder of said band, said file-like inner gripping surface being split into two separate segments which are separated by and integrally connected to said V-shaped ridge, a first of said segments being situated between said plurality of flat surfaces and said V-shaped ridge, and extending between said stationary and traveling plates, and a second of said segments extending along the opposite edge of said band with respect to said plurality of flat surfaces. 20. An adjustable oil filter wrench as set forth in claim 19, wherein said plurality of sequential and incremental flat surfaces is situated in a different cross-sectional plane than said file-like inner gripping surface. 21. An adjustable oil filter wrench as set forth in claim 19, wherein said shaft combines with said band to completely encircle a portion of the circumference of an oil filter, said shaft being positioned tangentially to the nearest portion of the outer surface of the filter when said wrench is properly adjusted for the twisting of the filter.
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