US4094484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced portable pedestals
Assignee: W Vinten Ltd
•
Filing: 1977-02-28
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Granted: 1978-06-13
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Expires: 1997-02-28
Abstract
Abstract Instrument support pedestal having self pumping action providing pedestal pressurization for substantially counterbalancing instrument weight. The pedestal also having column alignable fold-up support legs adjustable for setting the verticallity of the column and compactness for transportation.
Inventors
- 👤 Edward Richard David Galione
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:49
CPC Classifications
B; B66; B66F; B66F3/00; B66F3/24; F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/26; F16M11/28; F16M2200/00; F16M2200/04; F16M2200/048
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A portable pedestal for instruments such as cameras or the like, comprising a base member having an outer column mounted thereon, at least one inner column slidably locatable substantially concentric with said outer column, pressure increasing means operable to pressurise said inner column via valve means during relative movement between said inner and outer columns to produce a pressure of gas within said inner column operable to substantially balance said inner column against an externally applied force on said inner column.
Claim 2
Dependent Claim
81 words
A portable pedestal for instruments such as cameras or the like, comprising a base member having an outer column mounted thereon, at least one inner column slidably locatable substantially concentric with said outer column, pressure increasing means operable to pressurise said inner column via valve means during relative movement between said inner and outer columns to produce a pressure of gas within said inner column operable to substantially balance said inner column against an externally applied force on said inner column.
Claim 3
Dependent Claim
53 words
A portable pedestal as claimed in claim 1 wherein said pressure increasing means comprises a cylinder within said inner column and attached thereto, a double acting piston within said cylinder operably secured to a base plate on said outer column, and one or more interconnecting passages between said cylinder and said inner column.
Claim 4
Dependent Claim
19 words
A portable pedestal as claimed in claim 1 wherein said valve means comprises two or more non return valves.
Claim 5
Dependent Claim
21 words
A portable pedestal as claimed in claim 3 wherein at least one of said non return valves may be rendered inoperative.
Claim 6
Dependent Claim
24 words
A portable pedestal as claimed in claim 1 wherein a pressure relief valve is fitted and set to operate at a pre-determined maximum pressure.
Claim 7
Dependent Claim
34 words
A portable pedestal as claimed in claim 1 wherein a pressure bleed means is fitted and is operable to release pressure within the inner column to depressurise the pedestal for transportation of said pedestal.
Claim 8
Dependent Claim
130 words
A portable pedestal for instruments such as cameras or the like comprising, a column, at least three legs pivoted at the lower end of said column for swinging movement between a first position adjacent the column and a second position extending at an angle from the column to define a base for supporting said column, at least one strut pivotally located between each of said legs and a moveably positionable ring with clamping means gimbally located over an annulus having attached thereto a clamping ring slidably locatable on said column so that said legs may be adjustably moveable between said first and second positions and wherein as least one said strut is pivotally located on said moveably positionable ring for adjustment of said column in verticality relative to said legs.
Claim 9
Dependent Claim
130 words
A portable pedestal for instruments such as cameras or the like comprising, a column, at least three legs pivoted at the lower end of said column for swinging movement between a first position adjacent the column and a second position extending at an angle from the column to define a base for supporting said column, at least one strut pivotally located between each of said legs and a moveably positionable ring with clamping means gimbally located over an annulus having attached thereto a clamping ring slidably locatable on said column so that said legs may be adjustably moveable between said first and second positions and wherein as least one said strut is pivotally located on said moveably positionable ring for adjustment of said column in verticality relative to said legs.
Claim 10
Dependent Claim
15 words
A portable pedestal as claimed in claim 1 used in conjunction with a portable skid.
References Cited (Backward Citations)
US669480A
Cited
US3201079A
Cited
US3193239A
Cited
US3682424A
Cited
US3828694A
Cited
US3762269A
Cited
US3966182A
Cited
US3989211A
Cited
US4037811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |