US3213571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Observatory dome
Assignee: Individual
•
Filing: 1961-08-08
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Granted: 1965-10-26
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Expires: 1981-08-08
Abstract
No abstract record available.
Inventors
- 👤 Irvin E Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:51
CPC Classifications
E; E04; E04H; E04H3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
AN OBSERVATORY DOME POSSESSING ALL-WEATHER PROTECTION OF MOVABLE PARTS COMPRISING, IN COMBINATION, A PLURALITY OF ARCUATE SECTOR-SHAPED SHEET MATERIAL SECTIONS ARRANGED TO FORM A HEMISPHERICAL DOME, A UNIFORM WIDTH VERTICALLY EXTENDING SLOT IN SAID DOME EXTENDING FROM THE BASE OF SAID DOME TO AT LEAST SLIGHTLY BEYOND THE TOP CENTER, A PAIR OF CURVED BEAMS ARRANGED ONE ON EACH EDGE OF THE SLOT AND EXTENDING OVER THE ENTIRE PERIPHERY OF SAID DOME, A VERTICALLY CURVED DOOR LARGER THAN SAID SLOT AND OVERLYING SAID BEAMS, SAID DOOR BEING GLIDINGLY CONNECTED TO SAID BEAMS, MEANS FOR VERTICAL SLIDE MOVEMENT OF SAID DOOR ON SAID BEAMS, SAID MEANS COMPRISING A RACK-LIKE TRACK SECURED TO THE UNDERSIDE OF SAID DOOR, A SPROCKET WHEEL ENGAGING SAID TRACK, DRIVE MEANS FOR SAID SPROCKET WHEEL AND SUPPORT MEANS FOR SAID SPROCKET WHEEL, SAID SPROCKET WHEEL BEING ROTATABLY SECURED TO SAID SUPPORT MEANS AND SAID SUPPORT MEANS BEING PIVOTALLY MOUNTED TO THE UNDERSIDE OF SAID DOME AND BIASED TOWARD SAID RACK-LIKE TRACK TO EFFECT CONTINUED ENGAGEMENT OF SAID SPROCKET WHEEL AND SAID TRACK WHEREBY VERTICAL SLIDE MOVEMENT OF SAID DOOR ON SAID BEAMS MAY BE POSITIVELY EFFECTED IN EITHER DIRECTION, AND DOME SUPPORT MEANS SECURED TO THE BASE OF THE DOME ADAPTED TO ALLOW ROTARY MOVEMENT OF SAID DOME.
Claim 2
Dependent Claim
211 words
AN OBSERVATORY DOME POSSESSING ALL-WEATHER PROTECTION OF MOVABLE PARTS COMPRISING, IN COMBINATION, A PLURALITY OF ARCUATE SECTOR-SHAPED SHEET MATERIAL SECTIONS ARRANGED TO FORM A HEMISPHERICAL DOME, A UNIFORM WIDTH VERTICALLY EXTENDING SLOT IN SAID DOME EXTENDING FROM THE BASE OF SAID DOME TO AT LEAST SLIGHTLY BEYOND THE TOP CENTER, A PAIR OF CURVED BEAMS ARRANGED ONE ON EACH EDGE OF THE SLOT AND EXTENDING OVER THE ENTIRE PERIPHERY OF SAID DOME, A VERTICALLY CURVED DOOR LARGER THAN SAID SLOT AND OVERLYING SAID BEAMS, SAID DOOR BEING GLIDINGLY CONNECTED TO SAID BEAMS, MEANS FOR VERTICAL SLIDE MOVEMENT OF SAID DOOR ON SAID BEAMS, SAID MEANS COMPRISING A RACK-LIKE TRACK SECURED TO THE UNDERSIDE OF SAID DOOR, A SPROCKET WHEEL ENGAGING SAID TRACK, DRIVE MEANS FOR SAID SPROCKET WHEEL AND SUPPORT MEANS FOR SAID SPROCKET WHEEL, SAID SPROCKET WHEEL BEING ROTATABLY SECURED TO SAID SUPPORT MEANS AND SAID SUPPORT MEANS BEING PIVOTALLY MOUNTED TO THE UNDERSIDE OF SAID DOME AND BIASED TOWARD SAID RACK-LIKE TRACK TO EFFECT CONTINUED ENGAGEMENT OF SAID SPROCKET WHEEL AND SAID TRACK WHEREBY VERTICAL SLIDE MOVEMENT OF SAID DOOR ON SAID BEAMS MAY BE POSITIVELY EFFECTED IN EITHER DIRECTION, AND DOME SUPPORT MEANS SECURED TO THE BASE OF THE DOME ADAPTED TO ALLOW ROTARY MOVEMENT OF SAID DOME.
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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |