US3739387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual purpose antenna control
Assignee: Barker Manufacturing Co Inc
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Filing: 1971-07-13
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Granted: 1973-06-12
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Expires: 1991-07-13
Abstract
Abstract The invention pertains to an antenna, such as a television antenna, particularly suitable for use with recreational vehicles wherein the signal-receiving components may be elevated to a signal-receiving position, or retracted to a position adjacent the recreational vehicle roof for traveling. The signal-receiving components are mounted upon a linkage which pivots about horizontal axes, and a worm wheel is employed to pivot the linkages about their associated axes. A vertically disposed rotatable shaft mounted upon a rotatable base member includes a worm gear meshing with the linkage worm wheel, and the shaft is rotatable from within the recreational vehicle interior. The shaft is additionally capable of axial movement whereby the shaft may be keyed to the base member wherein rotation of the shaft directly rotates the base member. A crank handle is mounted to the shaft for producing rotation thereof wherein rotation of the crank selectively raises and lowers the signal-receiving components or rotates the base member and signal-receiving components for directional purposes, the dual function being provided by a single crank handle.
Inventors
- 👤 J Budrow
- 👤 G Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:38
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/125; H01Q1/08; H01Q1/1235; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275; H01Q19/00; H01Q19/02; H01Q19/04; H01Q19/28; H01Q19/30; H01Q3/00; H01Q3/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
178 words
An elevatable and retractable antenna comprising, in combination, a base member rotatably mounted for rotation about a substantially vertical first axis, linkage means pivotally mounted on said base member for rotation about a substantially horizontal second axis between elevated and retracted positions, antenna signal-receiving means mounted upon said linkage means for movement therewith to said elevated and retracted positions, a control member mounted on said base member to rotate around said vertical axis, transmission means operatively connecting said control member to said linkage means whereby rotation of said control member relative to said base member pivots said linkage means about said second axis, first key means mounted on said control member, second key means defined on said base member adapted to selectively cooperate with said first key means to lock said control member to said base member whereby said control member selectively rotates said base member about said first axis, said control member being vertically movably mounted upon said base member between first and second positions relative to said base member engaging and disengaging said key means, respectively.
Claim 2
Dependent Claim
178 words
An elevatable and retractable antenna comprising, in combination, a base member rotatably mounted for rotation about a substantially vertical first axis, linkage means pivotally mounted on said base member for rotation about a substantially horizontal second axis between elevated and retracted positions, antenna signal-receiving means mounted upon said linkage means for movement therewith to said elevated and retracted positions, a control member mounted on said base member to rotate around said vertical axis, transmission means operatively connecting said control member to said linkage means whereby rotation of said control member relative to said base member pivots said linkage means about said second axis, first key means mounted on said control member, second key means defined on said base member adapted to selectively cooperate with said first key means to lock said control member to said base member whereby said control member selectively rotates said base member about said first axis, said control member being vertically movably mounted upon said base member between first and second positions relative to said base member engaging and disengaging said key means, respectively.
Claim 3
Dependent Claim
44 words
In an elevatable and retractable antenna as in claim 1 wherein said transmission includes a worm wheel connected to said linkage means rotatable about said second axis, and a worm gear mounted on said control member for rotation therewith meshing with said worm wheel.
Claim 4
Dependent Claim
36 words
In an elevatable and retractable antenna as in claim 2 wherein said control member includes a shaft rotatably mounted on said base member coaxial with said first axis and a crank handle attached to said shaft.
Claim 5
Dependent Claim
78 words
In an elevatable and retractable antenna as in claim 1 wherein said control member includes a shaft rotatably mounted on said base member coaxial with said first axis and axially movable with respect to said base member between said first and second positions, said first key means being mounted on said shaft, a hub defined on said base member receiving and encircling said shaft and including an end surface, said second key means being defined on said hub.
Claim 6
Dependent Claim
47 words
In an elevatable and retractable antenna as in claim 4 wherein said first key means comprises a pin diametrically extending through said shaft and radially extending beyond the shaft outer diameter, and said second key means comprises a radially extending recess defined in said hub end surface.
Claim 7
Dependent Claim
69 words
In an elevatable and retractable antenna as in claim 3 wherein said shaft includes an upper end and a lower end, said transmission including a worm wheel connected to said linkage means rotatable about said second axis and a worm fixed to said shaft upper end meshing with said worm wheel, and a crank handle attached to said shaft lower end for rotating said shaft about said first axis.
Claim 8
Dependent Claim
164 words
An elevatable and retractable antenna adapted to be mounted on a substantially horizontal support member having an upper surface and a lower surface comprising, in combination, a base member rotatably mounted upon the support member upper surface for rotation about a substantially vertical first axis, antenna signal-receiving means, movable elevatable and retractable means mounting said signal-receiving means upon said base member for selective movement of said signal-receiving means between elevated and retracted positions, a single control member comprising a shaft rotatably and axially shiftably mounted on said base member for rotation about said first axis and linear movement parallel to said axis and extending through the support member manually operable from below the lower surface, and selectively operable first and second drive means interposed between said control member and said elevatable and retractable means, and said control member and base member, respectively, for permitting said control member to selectively operate said elevatable and retractable means or rotate said base member about said first axis.
Claim 9
Dependent Claim
164 words
An elevatable and retractable antenna adapted to be mounted on a substantially horizontal support member having an upper surface and a lower surface comprising, in combination, a base member rotatably mounted upon the support member upper surface for rotation about a substantially vertical first axis, antenna signal-receiving means, movable elevatable and retractable means mounting said signal-receiving means upon said base member for selective movement of said signal-receiving means between elevated and retracted positions, a single control member comprising a shaft rotatably and axially shiftably mounted on said base member for rotation about said first axis and linear movement parallel to said axis and extending through the support member manually operable from below the lower surface, and selectively operable first and second drive means interposed between said control member and said elevatable and retractable means, and said control member and base member, respectively, for permitting said control member to selectively operate said elevatable and retractable means or rotate said base member about said first axis.
Claim 10
Dependent Claim
82 words
In an elevatable and retractable antenna as in claim 7 wherein said elevatable and retractable means includes a worm wheel mounted on said base member for rotation about a substantially horizontal second axis and said first drive means includes a worm gear mounted on said shaft meshing with said worm wheel, and said second drive means includes a detent mounted upon said shaft cooperable with a recess defined on said base member upon axial shifting of said shaft toward said base member.
References Cited (Backward Citations)
US3065942A
Cited
US3412404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |