IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0956027
(2001-09-20)
|
우선권정보 |
GB-200023849 (2000-09-29) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
3 |
초록
▼
A retaining device comprises a holder for receiving an object and a clamp 4 . The holder comprises a cylindrical sleeve 1 with three longitudinal cut-out slits 3 spaced 120° apart and a base 2 secured at one end. The inner surface of the clamp 4 has three lobes 11,12,13 also spaced 120° ap
A retaining device comprises a holder for receiving an object and a clamp 4 . The holder comprises a cylindrical sleeve 1 with three longitudinal cut-out slits 3 spaced 120° apart and a base 2 secured at one end. The inner surface of the clamp 4 has three lobes 11,12,13 also spaced 120° apart. The portions midway adjacent lobes contact the portions of the sleeve midway adjacent slits 3 , resulting in a symmetrical force being applied to the circumference of the sleeve 1 when the clamp 4 is tightened. The clamp 4 is free from the base 2 of the holder and is not rigidly attached to the sleeve 1 and thus does not apply unequal forces to the holder when the clamp is tightened. Alternatively the sleeve 1 may have a thin continuous wall which deforms when forces are applied to it by the clamp 4 . The object inserted into the sleeve may have a spherically shaped portion to allow is to be angularly adjusted in the sleeve before the clamp is tightened.
대표청구항
▼
1. A retaining device for releasably retaining an object in a fixed position, comprises:a spherically shaped portion connected or connectable to the object;a holder into which the spherically shaped portion is inserted;a clamping device which surrounds the circumference of the holder; anda plurality
1. A retaining device for releasably retaining an object in a fixed position, comprises:a spherically shaped portion connected or connectable to the object;a holder into which the spherically shaped portion is inserted;a clamping device which surrounds the circumference of the holder; anda plurality of recesses provided between the inner surface of the clamping device and the holder, such that when tightened, the clamping device applies forces at symmetrical points around the circumference of the holder which in turn transmits symmetrical clamping forces to the object,wherein the holder is deformable and deforms in shape when the clamping device is tightened, the spherically shaped portion enables the object to be angularly adjusted about at least one axis inside the holder until the clamping device is tightened to fix the object in position,wherein the symmetrical clamping forces hold the object in said position without movement of said object during tightening of the clamping device,wherein the clamping device has an inner surface comprising a plurality of recesses located about the longitudinal axis of the holder, wherein only those portions of the inner surface between adjacent recesses are in contact with the holder, and wherein those portions of the inner surface in contact with the holder are arranged symmetrically about the longitudinal axis of the holder, andwherein after the clamping device is tightened, the recesses between the portions of the inner surface in contact with the holder are filled with sealant. 2. A retaining device for releasably retaining an object in a fixed position, comprises:a spherically shaped portion connected or connectable to the object;a holder into which the spherically shaped portion is inserted;a clamping device which surrounds the circumference of the holder; anda plurality of recesses provided between the inner surface of the clamping device and the holder, such that when tightened, the clamping device applies forces at symmetrical points around the circumference of the holder which in turn transmits symmetrical clamping forces to the object,wherein the holder is deformable and deforms in shape when the clamping device is tightened, the spherically shaped portion enables the object to be angularly adjusted about at least one axis inside the holder until the clamping device is tightened to fix the object in position,wherein the symmetrical clamping forces hold the object in said position without movement of said object during tightening of the clamping device, andwherein said object is the end of an optical fibre. 3. An apparatus for adjusting the position of an optical fibre, comprising:a spherically shaped portion connected or connectable to the optical fibre;a holder into which the spherically shaped portion of the optical fibre is inserted:a clamping device which surrounds the circumference of the holder; anda plurality of recesses provided between the inner surface of the clamping device and the holder, such that when tightened, the clamping device applies forces at symmetrical points around the circumference of the holder which in turn transmits symmetrical clamping forces to the object,wherein the holder is deformable and deforms in shape when the clamping device is tightened; andwherein the spherically shaped portion enables the optical fibre to be angularly adjusted about at least one axis inside the holder until the clamping device is tightened to fix the object in position. 4. The apparatus for adjusting the position of an optical fibre as claimed in claim 3, wherein the recesses are recessed lobes. 5. A retaining device for releasably retaining an at least part spherically shaped portion of a ball bar calibration apparatus in a fixed position comprises:a holder into which the at least part spherically shaped portion is inserted;a clamping device which surrounds the circumference of the holder; anda plurality of recesses provided between the inner surface of the clamping dev ice and the holder, such that when tightened, the clamming device applies forces at symmetrical points around the circumference of the holder which in turn transmits symmetrical clamping forces to the at least part spherically shaped portion,wherein the holder is deformable and deforms in shape when the clamping device is tightened, the at least part spherically shaped portion enables angular adjustment about at least one axis inside the holder until the clamping device is tightened to fix the at least part spherically shaped portion in position, andwherein after the clamping device is tightened, the recesses between the portions of the inner surface in contact with the holder are filled with sealant. 6. A retaining device for releasably retaining an object in a fixed position comprises:a spherically shaped portion connected or connectable to the object;a holder into which the spherically shaped portion is inserted;a clamping device which surrounds the circumference of the holder; anda plurality of recesses provided between the inner surface of the clamping device and the holder, such that when tightened, the clamping device applies forces at symmetrical points around the circumference of the holder which in turn transmits symmetrical clamping forces to the object,wherein the holder is deformable and deforms in shape when the clamping device is tightened, the spherically shaped portion enables the object to be angularly adjusted about at least one axis inside the holder and the holder is shaped to allow linear adjustment of the spherically shaped portion relative to the holder, until the clamping device is tightened to fix the object in position. 7. A retaining device for releasably retaining an object as claimed in claim 6, wherein the holder is cylindrical. 8. A retaining device for releasably retaining an object as claimed in claim 6, wherein the forces applied around the circumference of the holder are perpendicular to the longitudinal axis of the holder. 9. A retaining device for releasably retaining an object as claimed in claim 6, wherein the clamping device is not rigidly attached to the holder. 10. A retaining device for releasably retaining an object as claimed in claim 6, wherein the holder has a plurality of cut-out slits. 11. A retaining device for releasably retaining an object as claimed in claim 6, wherein the holder has three cut-out slits arranged symmetrically about the longitudinal axis of the holder. 12. A retaining device for releasably retaining an object as claimed in claim 6, wherein the clamping device has an inner surface comprising a plurality of recesses located about the longitudinal axis of the holder, wherein only those portions of the inner surface between adjacent recesses are in contact with the holder, and wherein those portions of the inner surface in contact with the holder are arranged symmetrically about the longitudinal axis of the holder. 13. A retaining device for releasably retaining an object as claimed in claim 6, wherein the holder is provided with a plurality of cut-out slits and wherein the clamping device is arranged such that the portions of the inner surface in contact with the holder contact the holder between adjacent slits. 14. A retaining device for releasably retaining an object as claimed in claim 6, wherein after the clamping device is tightened, the recesses between the portions of the inner surface in contact with the holder are filled with sealant. 15. A retaining device for releasably retaining an object as claimed in claim 6, wherein there are three points of contact between the clamping device and the holder. 16. A retaining device for releasably retaining an object as claimed in claim 6, wherein the holder is provided with a magnetic base. 17. A retaining device for releasably retaining an object as claimed in claim 6, wherein the clamping device comprises a U-shaped portion which surrounds the circumference of the holder and wherein the two arms of the U-shape may be pulled together to tighten the clamping device. 18. A retaining device for releasably retaining an object as claimed in claim 6, wherein the clamping device is tightened by a screw with an axis of rotation perpendicular to the longitudinal axis of the holder.
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