US3137497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet loosening method and apparatus
Assignee: Individual
•
Filing: 1961-01-23
•
Granted: 1964-06-16
•
Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Paul F Good
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:57
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN APPARATUS FOR SEPARATING SHEET ARTICLES IN A STACK OF SAID ARTICLES COMPRISING MEANS FOR SUPPORTING THE STACK OF ARTICLES, MEANS FOR CLAMPING A PORTION OF SAID STACK AT A POSITION ADJACENT AN EDGE OF SAID STACK, MEANS FOR INDUCING SLIPPAGE BETWEEN ADJACENT SHEETS IN SAID STACK AT THE UNCLAMPED PORTION THEREOF, SAID MEANS INCLUDING AN UNINTERRUPTED FLEXIBLE PLATE MEMBER DISPOSED ALONG THE BOTTOM OF SAID STACK ABOVE SAID SUPPORTING MEANS AND ADAPTED TO BE BENT TOWARD SAID STACK.
Claim 2
Independent Claim
79 words
AN APPARATUS FOR SEPARATING SHEET ARTICLES IN A STACK OF SAID ARTICLES COMPRISING MEANS FOR SUPPORTING THE STACK OF ARTICLES, MEANS FOR CLAMPING A PORTION OF SAID STACK AT A POSITION ADJACENT AN EDGE OF SAID STACK, MEANS FOR INDUCING SLIPPAGE BETWEEN ADJACENT SHEETS IN SAID STACK AT THE UNCLAMPED PORTION THEREOF, SAID MEANS INCLUDING AN UNINTERRUPTED FLEXIBLE PLATE MEMBER DISPOSED ALONG THE BOTTOM OF SAID STACK ABOVE SAID SUPPORTING MEANS AND ADAPTED TO BE BENT TOWARD SAID STACK.
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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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |