US3189135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Demountable partition
Assignee: National Gypsum Co
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Filing: 1959-05-11
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Granted: 1965-06-15
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Robert H Slowinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:50
CPC Classifications
E; E04; E04B; E04B2/00; E04B2/74; E04B2/82; E04B2/821; E04B2/822
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
A DEMOUNTABLE PARTITION COMPRISING AN UPWARDLY OPENING BOTTOM CHANNEL AFFIXED TO A FLOOR, A DOWNWARDLY OPENING TOP CHANNEL AFFIXED TO A CEILING PARALLEL TO AND ABOVE SAID BOTTOM CHANNEL, A RESILIENT, VERTICALLY COMPRESSED SPRING DISPOSED WITHIN SAID BOTTOM CHANNEL, A PARTITION PANEL HAVING A BOTTOM EDGE DISPOSED WITHIN SAID BOTTOM CHANNEL ABOVE SAID SPRING AND HAVING A TOP EDGE DISPOSED WITHIN SAID TOP CHANNEL, SAID COMPRESSED SPRING CONSTANTLY URGING SAID PANEL UPWARDS, SAID SPRING AND SAID PANEL BEING VERTICALLY RESTRAINED BY SAID RELATIVELY FIXEDLY SPACED TOP CHANNEL, SAID TOP CHANNEL INCLUDING AN UPPERMOST HORIZONTAL TOP FACE ADJACENT SAID CEILING SIDES EXTENDING DOWNWARDLY FROM THE LATERAL EDGES OF SAID TOP FACE, AND INWARDLY DIRECTED LIPS AT THE BOTTOM EDGES OF SAID SIDES, SAID TOP CHANNELS HAVING DISPOSED THEREIN AT SPACED POSITIONS SELF-RETAINED SPACING CLIPS, SAID SPACING CLIPS BEING GENERALLY M-SHAPED, INCLUDING TWO OPPOSITELY OUTWARDLY AND DOWNWARDLY DIRECTED ARMS FOR CENTERING SAID CLIP IN SAID TOP CHANNEL, AND A CENTRAL LOWER FACE FOR ABUTTING THE PANEL TOP EDGE AND HOLDING SAID PANEL SPACED DOWNWARDLY FROM SAID TOP FACE.
Claim 2
Dependent Claim
176 words
A DEMOUNTABLE PARTITION COMPRISING AN UPWARDLY OPENING BOTTOM CHANNEL AFFIXED TO A FLOOR, A DOWNWARDLY OPENING TOP CHANNEL AFFIXED TO A CEILING PARALLEL TO AND ABOVE SAID BOTTOM CHANNEL, A RESILIENT, VERTICALLY COMPRESSED SPRING DISPOSED WITHIN SAID BOTTOM CHANNEL, A PARTITION PANEL HAVING A BOTTOM EDGE DISPOSED WITHIN SAID BOTTOM CHANNEL ABOVE SAID SPRING AND HAVING A TOP EDGE DISPOSED WITHIN SAID TOP CHANNEL, SAID COMPRESSED SPRING CONSTANTLY URGING SAID PANEL UPWARDS, SAID SPRING AND SAID PANEL BEING VERTICALLY RESTRAINED BY SAID RELATIVELY FIXEDLY SPACED TOP CHANNEL, SAID TOP CHANNEL INCLUDING AN UPPERMOST HORIZONTAL TOP FACE ADJACENT SAID CEILING SIDES EXTENDING DOWNWARDLY FROM THE LATERAL EDGES OF SAID TOP FACE, AND INWARDLY DIRECTED LIPS AT THE BOTTOM EDGES OF SAID SIDES, SAID TOP CHANNELS HAVING DISPOSED THEREIN AT SPACED POSITIONS SELF-RETAINED SPACING CLIPS, SAID SPACING CLIPS BEING GENERALLY M-SHAPED, INCLUDING TWO OPPOSITELY OUTWARDLY AND DOWNWARDLY DIRECTED ARMS FOR CENTERING SAID CLIP IN SAID TOP CHANNEL, AND A CENTRAL LOWER FACE FOR ABUTTING THE PANEL TOP EDGE AND HOLDING SAID PANEL SPACED DOWNWARDLY FROM SAID TOP FACE.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |