Patent CH346468A successfully refreshed from Google Patents.
US3307307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helical building
Assignee: Austin Co
•
Filing: 1964-03-02
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Granted: 1967-03-07
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Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 Richard F Wittenmyer
- 👤 Hodson Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:30
CPC Classifications
E; E04; E04H; E04H6/00; E04H6/08; E04H6/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A VEHICLE PARKING BUILDING COMPRISING A PAIR OF SUBSTANTIALLY CIRCULARLY HELICAL, ALL-RAMP STRUCTURES POSITIONED WITH THEIR AXES SUBSTANTIALLY VERTICAL, A HELICAL, SINGLE LANE DRIVEWAY RADIALLY POSITIONED INTERMEDIATE EACH STRUCTURE, A PLURALITY OF VEHICLE STALLS ON EACH SIDE OF EACH DRIVEWAY, A PLURALITY OF COLUMNS ARRANGED IN AN EXTERIOR CIRCLE AND IN AN INTERIOR CIRCLE, A PLURALITY OF EXTERIOR EDGE BEAMS CONNECTING ADJACENT EXTERIOR COLUMNS, A PLURALITY OF INTERIOR EDGE BEAMS CONNECTING ADJACENT INTERIOR COLUMNS, A PLURALITY OF WEDGE-SHAPED FLOOR BEAM SECTIONS POSITIONED WITH THEIR LONG DIMENSION BRIDGING THE INTERIOR AND EXTERIOR EDGE BEAMS AND FORMING SAID DRIVEWAY, SAID COLUMNS AND EDGE BEAMS PROVIDING SUBSTANTIALLY ENTIRELY THE SUPPORT FOR SAID FLOOR BEAM SECTIONS, MEANS COOPERATING WITH SAID EDGE BEAMS TO POST-TENSION PORTIONS OF SAID FLOOR BEAM SECTIONS, AND CROSSOVER MEANS CONNECTING AT LEAST THE UPPER ENDS OF SAID STRUCTURES.
Claim 2
Dependent Claim
138 words
A VEHICLE PARKING BUILDING COMPRISING A PAIR OF SUBSTANTIALLY CIRCULARLY HELICAL, ALL-RAMP STRUCTURES POSITIONED WITH THEIR AXES SUBSTANTIALLY VERTICAL, A HELICAL, SINGLE LANE DRIVEWAY RADIALLY POSITIONED INTERMEDIATE EACH STRUCTURE, A PLURALITY OF VEHICLE STALLS ON EACH SIDE OF EACH DRIVEWAY, A PLURALITY OF COLUMNS ARRANGED IN AN EXTERIOR CIRCLE AND IN AN INTERIOR CIRCLE, A PLURALITY OF EXTERIOR EDGE BEAMS CONNECTING ADJACENT EXTERIOR COLUMNS, A PLURALITY OF INTERIOR EDGE BEAMS CONNECTING ADJACENT INTERIOR COLUMNS, A PLURALITY OF WEDGE-SHAPED FLOOR BEAM SECTIONS POSITIONED WITH THEIR LONG DIMENSION BRIDGING THE INTERIOR AND EXTERIOR EDGE BEAMS AND FORMING SAID DRIVEWAY, SAID COLUMNS AND EDGE BEAMS PROVIDING SUBSTANTIALLY ENTIRELY THE SUPPORT FOR SAID FLOOR BEAM SECTIONS, MEANS COOPERATING WITH SAID EDGE BEAMS TO POST-TENSION PORTIONS OF SAID FLOOR BEAM SECTIONS, AND CROSSOVER MEANS CONNECTING AT LEAST THE UPPER ENDS OF SAID STRUCTURES.
References Cited (Backward Citations)
CA564329A
Cited
US1629787A
Cited
DE856216C
Cited
US2689384A
Cited
DE802359C
Cited
US3105999A
Cited
US3074209A
Cited
FR1229665A
Cited
FR1267318A
Cited
US3136092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |