Patent US3871607A successfully refreshed from Google Patents.
US3871607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible tripod support
Assignee: United States Department of the Army
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Filing: 1973-10-02
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Granted: 1975-03-18
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Expires: 1993-10-02
Abstract
Abstract The invention is a portable, lightweight, collapsible, tensioned support with telescopic tubular members arranged to provide a tripod stand and vertical support member. The device may be transported and assembled by one man without requiring any additional equipment.
Inventors
- 👤 Benjamin D Pile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:47
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/32; F16M11/34; A; A61; A61B; A61B90/00; A61B90/50; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; F16B7/10; F16B7/14; F16M11/28; F21; F21V; F21V21/00; F21V21/14; F21V21/22; F16B7/044; F16B7/048; F16B7/0486; F16M2200/00; F16M2200/02; F16M2200/025; F16M2200/027; F16M2200/028; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32426
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
234 words
A support structure comprising: a. a member having a central hub, a plurality of radially disposed U-shaped channels extending horizontally from said central hub and a recess located in said central hub, said Ushaped channels opening downwardly in operating condition; b. an extendible section fitting into said centrally disposed recess; c. a plurality of flexible cables depending from the upper portion of said extendible section; d. connecting means fixedly secured to said extendible section fastening said flexible cables to the upper portion of said extendible section, said connecting means having a first internal circular recess with a plurality of vertically disposed slots communicating with a second internal circular recess of greater diameter than said first recess, said slots receiving said cables and said second recess receiving said cable ends, said cable ends being larger in diameter than said cables and said slots; and e. a plurality of legs, each of said legs fitting into one of said U-shaped channels, means for rotatably securing said legs to said channels and means for connecting said cables to said legs, whereby when said extendible section is extended said cable ends are held in a fixed position against the smaller diameter slots and said cables are placed in tension and draw said Legs into a substantially horizontal operating position such that said legs are in contact with the bight of said Ushaped channels, which act as a stop.
Claim 2
Dependent Claim
234 words
A support structure comprising: a. a member having a central hub, a plurality of radially disposed U-shaped channels extending horizontally from said central hub and a recess located in said central hub, said Ushaped channels opening downwardly in operating condition; b. an extendible section fitting into said centrally disposed recess; c. a plurality of flexible cables depending from the upper portion of said extendible section; d. connecting means fixedly secured to said extendible section fastening said flexible cables to the upper portion of said extendible section, said connecting means having a first internal circular recess with a plurality of vertically disposed slots communicating with a second internal circular recess of greater diameter than said first recess, said slots receiving said cables and said second recess receiving said cable ends, said cable ends being larger in diameter than said cables and said slots; and e. a plurality of legs, each of said legs fitting into one of said U-shaped channels, means for rotatably securing said legs to said channels and means for connecting said cables to said legs, whereby when said extendible section is extended said cable ends are held in a fixed position against the smaller diameter slots and said cables are placed in tension and draw said Legs into a substantially horizontal operating position such that said legs are in contact with the bight of said Ushaped channels, which act as a stop.
Claim 3
Dependent Claim
123 words
A support structure as recited in claim 1, wherein said extendible section comprises an inner telescoping member and an outer telescoping member, said outer telescoping member having a plurality of circular indentations equally spaced peripherally and lengthwise thereof, said indentations being in contact with the outer surface of said inner telescoping member and creating compression at the point of contact and tension and distortion of said outer telescoping member between the points of contact whereby spring action is provided between said inner and outer telescoping members maintaining said inner and outer telescoping members in relatively firm engagement, and allowing said telescoping members to be held in a plurality of relative positions thereby allowing the total length of said telescoping members to be selective.
Claim 4
Dependent Claim
70 words
A support structure as recited in claim 2, wherein said outer telescoping member includes stop means secured internally thereof a predetermined distance remote from the end of said outer telescoping member secured to said central hub for limiting the maximum inward relative, longitudinal telescoping of said inner and outer telescoping members and for supporting said inner telescoping member when the inner telescoping meber is in contact with said stop means.
Claim 5
Dependent Claim
22 words
A support structure as recited in claim 3, wherein said stop means is a ring secured internally of said outer telescoping member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |