US3674158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pallet type parking system with a retractable walkway
Assignee: Individual
•
Filing: 1970-12-24
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Granted: 1972-07-04
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Expires: 1990-12-24
Abstract
Abstract A retractable walkway for covering and uncovering roller channels between a drive-on pallet and an elevator in an elevator parking system during passenger loading and unloading which is carried on vertically driven support columns; the walkway having a pair of hinged panes for revealing roller tracks located beneath the walkway in its elevated position to allow a pallet to be transferred on and off an elevator when passengers are not loading and unloading and to cover the roller tracks when the walkway is in an elevated position giving passengers a smoothly surfaced walkway during their loading and unloading.
Inventors
- 👤 Calvin P Owen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:39
CPC Classifications
E; E04; E04H; E04H6/00; E04H6/42
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
In a parking system having an elevator mechanism for carrying vehicles to upper levels and a drive-through stall for the entrance of vehicles from a street level, a drive-on pallet on rollers disposed in the drive-through stall in the parking system, the drive-through stall including passenger walkways on each side of the drive-on pallet and the elevator mechanism being separated from the drive-on pallet by one of the passenger walkways and roller channels for carrying a drive-on pallet between the drive-through stall and the elevator mechanism, the retractable walkway for covering and uncovering the roller channels comprising: a walkway carried by vertically driven support columns; at least one hinged panel in said walkway for exposing roller tracks located beneath said walkway in its lowered position and for covering said roller tracks in its elevated position.
Claim 2
Dependent Claim
135 words
In a parking system having an elevator mechanism for carrying vehicles to upper levels and a drive-through stall for the entrance of vehicles from a street level, a drive-on pallet on rollers disposed in the drive-through stall in the parking system, the drive-through stall including passenger walkways on each side of the drive-on pallet and the elevator mechanism being separated from the drive-on pallet by one of the passenger walkways and roller channels for carrying a drive-on pallet between the drive-through stall and the elevator mechanism, the retractable walkway for covering and uncovering the roller channels comprising: a walkway carried by vertically driven support columns; at least one hinged panel in said walkway for exposing roller tracks located beneath said walkway in its lowered position and for covering said roller tracks in its elevated position.
Claim 3
Dependent Claim
27 words
The retractable walkway of claim 1 wherein: said at least one hinged panel comprises first and second hinged panels having abutting free ends in their closed position.
Claim 4
Dependent Claim
56 words
The retractable walkway of claim 1 wherein: said roller tracks are carried by an elevated section, said elevated section having at least one edge in operable proximity with said at least one hinged panel for rotating said at least one hinged panel to an upward position upon retracking said walkway and thereby uncovering said roller channels.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |