US3253552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trolley systems
Assignee: Industrial Acoustics Co Inc
•
Filing: 1964-05-26
•
Granted: 1966-05-31
•
Expires: 1984-05-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Stein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:16
CPC Classifications
B; B61; B61F; B61F11/00; E; E05; E05D; E05D15/00; E05D15/06; E05D15/0604; E05D15/0608; E05D15/0613
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A MOVABLE WALL SYSTEM, THE COMBINATION OF A HORIZONTAL CEILING TRACK INCLUDING PARALLEL, SPACED-APART, PLANAR SUPPORT MEMBERS; A WELL PANEL HAVING A VERTICAL DIMENSION LESS THAN THE DISTANCE BETWEEN SAID CEILING TRACK AND THE FLOOR BELOW WHEN SAID WALL SECTION IS IN A RETRACTED CONDITION, AND INCLUDING MEANS FOR EXTENDING SAID WALL PANEL SO THAT THE SAME ENGAGES SAID CEILING TRACK AND THE FLOOR BELOW, AND A PAIR OF TROLLEYS FOR SUPPORTING SAID WALL PANEL SPACED ABOVE THE FLOOR WHEN SAID WALL PANEL IS IN SAID RETRACTED CONDITION; EACH OF SAID TROLLEYS COMPRISING A BEARING PLATE, MEANS FOR SUSPENDING SAID WALL PANEL FROM SAID BEARING PALTE, AND AT LEAST NINE SPHERICAL BEARING MEMBERS EQUALLY SPACED-APART ABOUT A CIRCULAR PATH CENTERED AROUND SAID MEANS FOR SUSPENDING SAID WALL SECTION AND ADAPTED TO MOVABLY SUPPORT SAID BEARING PLATE UPON SAID SPACED APART SUPPORT MEMBERS.
Claim 2
Dependent Claim
143 words
IN A MOVABLE WALL SYSTEM, THE COMBINATION OF A HORIZONTAL CEILING TRACK INCLUDING PARALLEL, SPACED-APART, PLANAR SUPPORT MEMBERS; A WELL PANEL HAVING A VERTICAL DIMENSION LESS THAN THE DISTANCE BETWEEN SAID CEILING TRACK AND THE FLOOR BELOW WHEN SAID WALL SECTION IS IN A RETRACTED CONDITION, AND INCLUDING MEANS FOR EXTENDING SAID WALL PANEL SO THAT THE SAME ENGAGES SAID CEILING TRACK AND THE FLOOR BELOW, AND A PAIR OF TROLLEYS FOR SUPPORTING SAID WALL PANEL SPACED ABOVE THE FLOOR WHEN SAID WALL PANEL IS IN SAID RETRACTED CONDITION; EACH OF SAID TROLLEYS COMPRISING A BEARING PLATE, MEANS FOR SUSPENDING SAID WALL PANEL FROM SAID BEARING PALTE, AND AT LEAST NINE SPHERICAL BEARING MEMBERS EQUALLY SPACED-APART ABOUT A CIRCULAR PATH CENTERED AROUND SAID MEANS FOR SUSPENDING SAID WALL SECTION AND ADAPTED TO MOVABLY SUPPORT SAID BEARING PLATE UPON SAID SPACED APART SUPPORT MEMBERS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |