US3164348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stand for movie screen device
Assignee: Knox Manufacturing Co
•
Filing: 1963-05-20
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Granted: 1965-01-05
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Expires: 1983-05-20
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Lee John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:01
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54; G03B21/56; G03B21/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A STAND ADAPTED TO BE MAINTAINED IN UPRIGHT POSITION UPON A SUPPORTING SURFACE, COMPRISING: AN ELONGATED STANDARD; A PLURALITY OF LEG MEMBERS SWINGABLY MOUNTED ON THE LOWER END PORTION OF THE STANDARD FOR MOVEMENT TOGETHER BETWEEN A CLOSED POSITION ADJACENT THE STANDARD AND A SPREAD-APART SUPPORTING POSITION IN WHICH THE STANDARD IS MAINTAINED UPRIGHTLY; A BRACING LINK PIVOTALLY SECURED AT EACH OF ITS OPPOSITE ENDS TO ONE OF THE LEG MEMBERS AND TO THE LOWER END OF THE STANDARD; SPRING MEANS POSITIONED AT THE LOWER END OF THE STANDARD; A LEVER PIVOTED ON THE LOWER END OF THE STANDARD, ONE ARM OF THE LEVER ENGAGING THE BRACKING LINK AND THE OTHER ARM OF THE LEVER ENGAGING THE SPRING MEANS; AND MEANS FOR IMPARTING STRESS TO THE SPRING MEANS TO EXERT FORCES ON THE OTHER ARM OF THE LEVER WHEREBY, WHEN THE STAND IS REMOVED FROM THE SUPPORTING SURFACE, THE LEVER IS ROTATED PIVOTING THE BRACING LINK AND THE LEG MEMBERS INWARDLY TO CLOSED POSITION ADJACENT THE STANDARD.
Claim 2
Dependent Claim
167 words
A STAND ADAPTED TO BE MAINTAINED IN UPRIGHT POSITION UPON A SUPPORTING SURFACE, COMPRISING: AN ELONGATED STANDARD; A PLURALITY OF LEG MEMBERS SWINGABLY MOUNTED ON THE LOWER END PORTION OF THE STANDARD FOR MOVEMENT TOGETHER BETWEEN A CLOSED POSITION ADJACENT THE STANDARD AND A SPREAD-APART SUPPORTING POSITION IN WHICH THE STANDARD IS MAINTAINED UPRIGHTLY; A BRACING LINK PIVOTALLY SECURED AT EACH OF ITS OPPOSITE ENDS TO ONE OF THE LEG MEMBERS AND TO THE LOWER END OF THE STANDARD; SPRING MEANS POSITIONED AT THE LOWER END OF THE STANDARD; A LEVER PIVOTED ON THE LOWER END OF THE STANDARD, ONE ARM OF THE LEVER ENGAGING THE BRACKING LINK AND THE OTHER ARM OF THE LEVER ENGAGING THE SPRING MEANS; AND MEANS FOR IMPARTING STRESS TO THE SPRING MEANS TO EXERT FORCES ON THE OTHER ARM OF THE LEVER WHEREBY, WHEN THE STAND IS REMOVED FROM THE SUPPORTING SURFACE, THE LEVER IS ROTATED PIVOTING THE BRACING LINK AND THE LEG MEMBERS INWARDLY TO CLOSED POSITION ADJACENT THE STANDARD.
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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) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |