US3863660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for controlling sunlight transmission
Assignee: Individual
•
Filing: 1972-07-21
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Granted: 1975-02-04
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Expires: 1992-07-21
Abstract
Abstract A beach umbrella or parasol construction in which the top material in one embodiment is provided with a multiplicity of openings to permit a controlled portion of the sun''s rays to pass through the material and reach the user. The openings also permit aerodynamic pressure equalization across the top to reduce likelihood of damaging the top during gusty wind conditions. In another embodiment of the invention, the top is fabricated from a number of radially projecting slats which may be pivoted along their longitudinal axes to vary the amount of sunlight passing through the slats. In both embodiments means may be provided to rotate the parasol about its central supporting post so that the user beneath the parasol will receive brief flashes of sunlight in rapid sequence.
Inventors
- 👤 Werner T Glaeser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:17
CPC Classifications
A; A45; A45B; A45B25/00; A45B25/18; A45B25/20
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
An umbrella comprising, a central supporting pole, cover supporting means extending about and supported by said supporting pole, and cover means supported by said cover supporting means and including means defining a plurality of continuously open apertures free from material over substantially the entire surface of said cover means that transmit both sunlight and air therethrough for continuously exposing the user therebeneath to a portion only of the sunrays energy incident upon the top of said cover means and transmitting the flow of air therethrough, the remainder of said cover means consisting of portions that alternate with said apertures for preventing the transmission of sunrays and air therethrough.
Claim 2
Dependent Claim
108 words
An umbrella comprising, a central supporting pole, cover supporting means extending about and supported by said supporting pole, and cover means supported by said cover supporting means and including means defining a plurality of continuously open apertures free from material over substantially the entire surface of said cover means that transmit both sunlight and air therethrough for continuously exposing the user therebeneath to a portion only of the sunrays energy incident upon the top of said cover means and transmitting the flow of air therethrough, the remainder of said cover means consisting of portions that alternate with said apertures for preventing the transmission of sunrays and air therethrough.
Claim 3
Dependent Claim
27 words
An umbrella as defined in claim 1 and further comprising, means mounting said cover support means and cover means for rotation about said central supporting pole axis.
Claim 4
Dependent Claim
30 words
An umbrella as defined in claim 2 and furtheR comprising, aerodynamic means comprising said cover means for rotating said cover support means and cover means in response to the wind.
Claim 5
Dependent Claim
23 words
An umbrella as defined in claim 2 and further comprising, motor means operatively connected to said cover support means for effecting said rotation.
Claim 6
Dependent Claim
26 words
An umbrella as defined in claim 1 wherein said apertures are arranged to continuously pass between 20 and 75 percent of the incident sunlight energy therethrough.
Claim 7
Dependent Claim
28 words
An umbrella as defined in claim 1 and further comprising, means for varying the dimensions of said apertures to control the amount of sunlight energy continuously passing therethrough.
Claim 8
Dependent Claim
51 words
An umbrella as defined in claim 6 wherein said means for varying the dimensions of said apertures comprises, means forming said cover means from a plurality of slats, said slats being pivotally mounted about axis which enable the edges of adjacent slats to be pivoted toward and away from each other.
Claim 9
Dependent Claim
25 words
An umbrella as defined in claim 7 wherein each of said slats extend radially from a central hub and is pivoted along radially extending axis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |