IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0332054
(2001-07-02)
|
우선권정보 |
IT-0000181 (2000-07-14) |
국제출원번호 |
PCT//EP01/07527
(2003-01-03)
|
§371/§102 date |
20030103
(20030103)
|
국제공개번호 |
WO02//06721
(2002-01-24)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Lino Manfrotto &
- Co. S.p.A.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
20 인용 특허 :
14 |
초록
▼
A telescopic stand is described and comprises at least two legs (2) and, for each leg, at least two elements (5, 6, 7) which are slidable telescopically relative to one another, locking means (12) on each leg (2), the locking means (12) being switchable between a locking condition and a release cond
A telescopic stand is described and comprises at least two legs (2) and, for each leg, at least two elements (5, 6, 7) which are slidable telescopically relative to one another, locking means (12) on each leg (2), the locking means (12) being switchable between a locking condition and a release condition in which relative sliding between the elements of the respective leg (2) is prevented at least in one direction, or is unrestricted, respectively, and the locking means being switched to the release condition in at least one predetermined condition of relative positioning of the legs (2). The locking means comprises respective facing and opposed appendages (24b) which project towards one another from the respective legs (2) and, when pressed against one another, can interact with one another in the release condition when the legs (2) are gathered together.
대표청구항
▼
1. A telescopic stand for optical or photographic apparatus, comprising at least two legs (2) connected to a spider at their first end and, for each leg, at least two elements (5,6,7) which are slidable telescopically relative to one another, locking means (12) on each leg, the locking means (12) be
1. A telescopic stand for optical or photographic apparatus, comprising at least two legs (2) connected to a spider at their first end and, for each leg, at least two elements (5,6,7) which are slidable telescopically relative to one another, locking means (12) on each leg, the locking means (12) being switchable between a locking condition and a release condition in which relative sliding between the elements of the respective leg (2) is prevented at least in one direction while in the locking condition, or is unrestricted in the release condition, respectively, all the locking means being simultaneously switched to the release condition in at least one predetermined condition of relative positioning of the legs (2), characterized in that the locking means comprise respective facing and opposed appendages (24b) which project towards one another from the respective legs (2) and, when pressed against one another, interact with one another in the release condition to simultaneously unlock all of the locking means (12) when the legs (2) are gathered together in the predetermined condition of relative positioning thereby simultaneously releasing one of said elements of each of said legs.2. The telescopic stand according to claim 1 in which the appendages (24b) are resilient with resilience (25) tending to urge them away from the respective legs(2), towards the locking position.3. The telescopic stand according to claim 1 in which the locking means comprises a collar element (13) having an opening (18), a pad movable radially in the opening, and a level control device (20) for pushing the pad (19) into restraining contact with the corresponding telescopic element (5, 6, 7).4. The telescopic stand according to claim 3 in which the level control device (20) comprises means (26) for adjusting the restraining load applied by the resilience (25).5. The telescopic stand according to claim 4 in which the means (26) for adjusting the restraining load comprises a cylindrical element (23) interposed between a level (24) of the control device and the pad (19), the cylindrical element (23) being housed in a groove (29) of adjustable width in the lever (24).6. The telescopic stand according to claim 5 in which the cylindrical element(23) is housed in the pad (19) in a track terminating at least one of its ends in a tab element (22) in order to bring about a unidirectional restraining effect.7. The telescopic stand according to claim 1 in which the locking means (12) has a unidirectional effect and is active in the direction in which the telescopic elements (5, 6, 7) return into one another.8. The telescopic stand according to claim 1 in which a restraining means (11) is provided for restraining each leg (2) in the retracted position in the absence of an initial extension stress thereon.9. The telescopic stand according to claim 8 in which the restraining means comprises a restraining plug (11) active on the innermost element (8) of each leg (2).
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