US3321164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable movie screen device
Assignee: Knox Manufacturing Co
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Filing: 1965-10-15
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Granted: 1967-05-23
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Russell E Petrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:35
CPC Classifications
F; F16; F16M; F16M11/00; F16M11/20; F16M11/24; F16M11/242; F16M11/245; F16M11/02; F16M11/16; F16M2200/00; F16M2200/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A STAND ADAPTED TO BE MAINTAINED IN AN 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 SUPPORTING POSITION IN WHICH THE STANDARD IS MAINTAINED UPRIGHTLY; A BRACING LINK EXTENDING BETWEEN ONE OF THE LEG MEMBERS AND THE LOWER END PORTION OF THE STANDARD HAVING ONE END PIVOTALLY SECURED TO SAID LOWER END PORTION OF THE STANDARD AND THE OTHER END PIVOTALLY SECURED TO SAID ONE LEG MEMBER; SPRING MEANS POSITIONED AT THE LOWER END PORTION OF THE STANDARD; LEVER MEANS EXTENDING INWARDLY OF THE PIVOT AT THE ONE END OF SAID BRACING LINK SO AS TO BE POSITIONED TO RECEIVE THRUST EXERTED FROM THE SPRING MEANS AND TO TRANSMIT THAT THRUST TO THE BRACING LINK IN A DIRECTION TENDING TO SWING SAID BRACING LINK TOWARD THE STANDARD AND THEREBY FOLD THE LEG MEMBERS AND THE BRACING LINK ADJACENT TO
Claim 2
Dependent Claim
169 words
A STAND ADAPTED TO BE MAINTAINED IN AN 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 SUPPORTING POSITION IN WHICH THE STANDARD IS MAINTAINED UPRIGHTLY; A BRACING LINK EXTENDING BETWEEN ONE OF THE LEG MEMBERS AND THE LOWER END PORTION OF THE STANDARD HAVING ONE END PIVOTALLY SECURED TO SAID LOWER END PORTION OF THE STANDARD AND THE OTHER END PIVOTALLY SECURED TO SAID ONE LEG MEMBER; SPRING MEANS POSITIONED AT THE LOWER END PORTION OF THE STANDARD; LEVER MEANS EXTENDING INWARDLY OF THE PIVOT AT THE ONE END OF SAID BRACING LINK SO AS TO BE POSITIONED TO RECEIVE THRUST EXERTED FROM THE SPRING MEANS AND TO TRANSMIT THAT THRUST TO THE BRACING LINK IN A DIRECTION TENDING TO SWING SAID BRACING LINK TOWARD THE STANDARD AND THEREBY FOLD THE LEG MEMBERS AND THE BRACING LINK ADJACENT TO
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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |