Patent US3170685A successfully refreshed from Google Patents.
US3170685A
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Sheet material folding method and apparatus
Assignee: BIGGAR ELIZABETH SHOTR
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Filing: 1963-06-10
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Granted: 1965-02-23
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Expires: 1983-06-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank M Biggar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:39
CPC Classifications
B; B65; B65H; B65H45/00; B65H45/02; B65H45/06; B65H45/10; B65H45/101; B65H45/1015
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
APPARATUS FOR FOLDING SHEET MATERIAL HAVING SUCCESSIVE FOLD LINES THEREALONG COMPRISING, A NORMALLY GENERALLY UPRIGHT RIGID STATIONARY SUPPORTING BACK AND A STOP AT THE LOWER END OF SAID BACK, MEANS FOR FEEDING SHEET MATERIAL DOWNWARDLY ALONG SAID BACK AND AGAINST SAID STOP, AND MEANS COACTING WITH SAID BACK FOR PRODUCING PRESSURE ON THE SHEET MATERIAL HOLDING THE MATERIAL AGAINST SAID BACK, WHICH PRESSURE IS LESS THAN THE BUCKLING FORCE PRODUCED IN ADJACENT PANELS OF THE MATERIAL OCCASIONED BY THE DIFFERENCT IN FORCE ALONG THE LENGTH OF THE SHEET RESULTING FROM RESISTANCE TO MOVEMENT OF THE LEADING END OF THE SHEET BY SAID STOP, THEREBY ENABLING PAIRS OF SUCCESSIVE PANELS OF THE MATERIAL TO MOVE AWAY FROM SAID BACK AND HOLD UPON THEMSELVES AS THE MATERIAL MOVES DOWNWARDLY ALONG SAID BACK AGAINST SAID STOP.
Claim 2
Dependent Claim
133 words
APPARATUS FOR FOLDING SHEET MATERIAL HAVING SUCCESSIVE FOLD LINES THEREALONG COMPRISING, A NORMALLY GENERALLY UPRIGHT RIGID STATIONARY SUPPORTING BACK AND A STOP AT THE LOWER END OF SAID BACK, MEANS FOR FEEDING SHEET MATERIAL DOWNWARDLY ALONG SAID BACK AND AGAINST SAID STOP, AND MEANS COACTING WITH SAID BACK FOR PRODUCING PRESSURE ON THE SHEET MATERIAL HOLDING THE MATERIAL AGAINST SAID BACK, WHICH PRESSURE IS LESS THAN THE BUCKLING FORCE PRODUCED IN ADJACENT PANELS OF THE MATERIAL OCCASIONED BY THE DIFFERENCT IN FORCE ALONG THE LENGTH OF THE SHEET RESULTING FROM RESISTANCE TO MOVEMENT OF THE LEADING END OF THE SHEET BY SAID STOP, THEREBY ENABLING PAIRS OF SUCCESSIVE PANELS OF THE MATERIAL TO MOVE AWAY FROM SAID BACK AND HOLD UPON THEMSELVES AS THE MATERIAL MOVES DOWNWARDLY ALONG SAID BACK AGAINST SAID STOP.
Claim 3
Independent Claim
111 words
THE METHOD OF FOLDING SHEET MATERIAL HAVING SUCCESSIVE LINES OF FOLDING ALTERNATING IN THE DIRECTION OF FOLDING THEREOF WHICH COMPRISES FEEDING THE MATERIAL GENERALLY DOWNWARDLY ALONG A RIGID STATIONARY SUPPORT AND AGAINST A STOP, CONTINUING TO FEED THE MATERIAL ALONG THE SUPPORT WITH THE LEADING LINE OF FOLDING HELD BY THE STOP, AND HOLDING THE MATERIAL AGAINST THE SUPPORT WITH A PRESSURE LESS THAN THE BUCKLING FORCE PRODUCED IN ADJACENT PANELS OF THE MATERIAL OCCASIONED BY THE DIFFERENCE IN FORCE ALONG THE LENGTH OF THE SHEET RESULTING FROM RESISTANCE TO MOVEMENT OF THE LEADING LINE OF FOLDING BY THE STOP, THEREBY ENABLING FOLDING OF THE MATERIAL ALONG SUCCESSIVE LINES OF FOLDING.
Claim 4
Independent Claim
111 words
THE METHOD OF FOLDING SHEET MATERIAL HAVING SUCCESSIVE LINES OF FOLDING ALTERNATING IN THE DIRECTION OF FOLDING THEREOF WHICH COMPRISES FEEDING THE MATERIAL GENERALLY DOWNWARDLY ALONG A RIGID STATIONARY SUPPORT AND AGAINST A STOP, CONTINUING TO FEED THE MATERIAL ALONG THE SUPPORT WITH THE LEADING LINE OF FOLDING HELD BY THE STOP, AND HOLDING THE MATERIAL AGAINST THE SUPPORT WITH A PRESSURE LESS THAN THE BUCKLING FORCE PRODUCED IN ADJACENT PANELS OF THE MATERIAL OCCASIONED BY THE DIFFERENCE IN FORCE ALONG THE LENGTH OF THE SHEET RESULTING FROM RESISTANCE TO MOVEMENT OF THE LEADING LINE OF FOLDING BY THE STOP, THEREBY ENABLING FOLDING OF THE MATERIAL ALONG SUCCESSIVE LINES OF FOLDING.
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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |