IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0070118
(1979-08-27)
|
우선권정보 |
GB-0034695 (1978-08-25) |
발명자
/ 주소 |
- Hawkes Peter C. (Rugby GB2)
|
출원인 / 주소 |
- Andrews MacLaren Limited (Long Buckby GB2 03)
|
인용정보 |
피인용 횟수 :
16 인용 특허 :
1 |
초록
▼
First and second legs (4 and 5) of a collapsible tripod (1) are pivoted to a third leg (6) and interconnected by two interpivoted bracing links (15 and 16). To swing the first and second legs (4 and 5) towards and away from the third leg (6), first and second tie members (24 and 25) extend, respecti
First and second legs (4 and 5) of a collapsible tripod (1) are pivoted to a third leg (6) and interconnected by two interpivoted bracing links (15 and 16). To swing the first and second legs (4 and 5) towards and away from the third leg (6), first and second tie members (24 and 25) extend, respectively, from the first and second legs (4 and 5) to an actuating member (18) which is movable longitudinally of the third leg (6). To prevent relative movement between the legs (4, 5 and 6), when the tripod (1) is in its extended condition, a control link (32) extends from the pivotal interconnection between the two bracing links (15 and 16) and the actuating member (18) and locking means (21) are provided for releasably locking the actuating means (18) to the third leg (6).
대표청구항
▼
A collapsible tripod (1, 2 or 3) comprising: first, second and third elongate legs (4, 5 and 6) which each have a head end and a foot end (7 and 8, 9 and 10, and 11 and 12); first and second upper pivot members (13 and 14) respectively supported on the third leg (6), adjacent the head end (11) of th
A collapsible tripod (1, 2 or 3) comprising: first, second and third elongate legs (4, 5 and 6) which each have a head end and a foot end (7 and 8, 9 and 10, and 11 and 12); first and second upper pivot members (13 and 14) respectively supported on the third leg (6), adjacent the head end (11) of the third leg (6), and respectively engaging the head ends (7 and 9) of the first and second legs (4 and 5) for pivotal movement of the first and second legs (4 and 5) between a first configuration, corresponding to an extended condition of the tripod (1, 2 or 3), in which the first, second and third legs (4, 5 and 6) mutually diverge from their head ends (7, 9 and 11) and their foot ends (8, 10 and 12) are disposed at the vertices of an imaginary triangle, and a second configuration, corresponding to a collapsed condition of the tripod (1, 2 or 3), in which the first and second legs (4 and 5) lie alongside the third leg (6); first and second bracing links (15 and 16) respectively pivoted to the first and second legs (4 and 5); and a first single pivot member (17) interconnecting the bracing links (15 and 16); characterised in that: an elongate actuating member (18), having a head end (19) and a foot end (20), is connected to the third leg (6) for movement relative to the third leg (6) between first and second positions in which the foot end (20) of the actuating member (18) is closer to and further from the head end (11) of the third leg (6); locking means (21) are provided for releasably securing the actuating member (18) in its first position, relative to the third leg (6); first and second lower pivot members (22 and 23) are supported on the actuating member (18), adjacent the foot end (20) of the actuating member (18); first and second tie members (24 and 25) have head ends (26 and 27) respectively engaging the first and second lower pivot members (22 and 23) and have foot ends (28 and 29) respectively pivoted to the first and second legs (4 and 5); a second single pivot member (30) is attached to the actuating member (18) and has a pivotal axis extending transversely of the actuating member (18); a third single pivot member (31) is supported by the first single pivot member (17); and a control link (32) has head and foot ends (33 and 34) respectively connected to the second and third single pivot members (30 and 31) so as to move the first single pivot member (17) between first and second positions respectively closer to and further from the head ends (7 and 9) of the first and second legs (4 and 5) during pivotal movement of the first and second legs (4 and 5) between their first and second configurations and during pivotal movement of the foot end (34) of the control link (32) about an axis extending perpendicular to the first single pivot member (17) and parallel to the pivotal axis of the second single pivot member (30), and so as to hold the first single pivot member (17) in its first position when the first and second legs (4 and 5) are in their first configuration and the tripod (1, 2 or 3) is in its extended condition, to thereby brace the first and second legs (4 and 5) relative to each other.
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