Patent US3577636A successfully refreshed from Google Patents.
US3577636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient cutter
Assignee: PPG Industries Inc
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Filing: 1969-01-07
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Granted: 1971-05-04
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Expires: 1989-01-07
Abstract
Abstract A scoring device with a resilient connection between a support and a scoring head to provide a uniform scoring pressure on a glass surface resulting in a uniform severing line.
Inventors
- 👤 Robert P Detorre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:31
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/10; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0333; Y10T83/0385
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
Apparatus for scoring glass sheets comprising: A. A BASE HAVING AN OPENING THEREIN; B. RESILIENT MEANS COMPRISING AT LEAST ONE FLEXIBLE STRIP FASTENED TO EITHER SIDE OF SAID BASE AND SPANNING SAID OPENING; C. A PILLAR POST MOUNTED TO SAID RESILIENT MEANS, SAID PILLAR POST HAVING A SCORING DEVICE ATTACHED THERETO.
Claim 2
Dependent Claim
51 words
Apparatus for scoring glass sheets comprising: A. A BASE HAVING AN OPENING THEREIN; B. RESILIENT MEANS COMPRISING AT LEAST ONE FLEXIBLE STRIP FASTENED TO EITHER SIDE OF SAID BASE AND SPANNING SAID OPENING; C. A PILLAR POST MOUNTED TO SAID RESILIENT MEANS, SAID PILLAR POST HAVING A SCORING DEVICE ATTACHED THERETO.
Claim 3
Dependent Claim
120 words
Apparatus for exerting a uniform pressure on a scoring device held against a moving ribbon of glass comprising: A. A BLOCK HAVING A HOLLOWED OUT PORTION FORMING A CYLINDER; B. A MOVABLE PISTON POSITIONED WITHIN SAID HOLLOWED BLOCK AND MOVABLE RELATIVE TO THE BLOCK; C. A SCORING DEVICE RESILIENTLY FASTENED TO SAID PISTON AT ONE END THEREOF; D. MEANS FOR SUPPLYING AIR UNDER PRESSURE TO THE HOLLOWED PORTION OF SAID BLOCK, THE AIR BEING TRAPPED BETWEEN THE CYLINDER AND SAID PISTON SO THAT THE PRESSURE OF THE AIR MOVES THE PISTON RELATIVE TO THE BLOCK CAUSING THE SCORING DEVICE TO EXERT A UNIFORM PRESSURE AGAINST SAID GLASS RIBBON, ONE END OF SAID CYLINDER FORMING A BASE HAVING AN OPENING THEREIN.
Claim 4
Dependent Claim
120 words
Apparatus for exerting a uniform pressure on a scoring device held against a moving ribbon of glass comprising: A. A BLOCK HAVING A HOLLOWED OUT PORTION FORMING A CYLINDER; B. A MOVABLE PISTON POSITIONED WITHIN SAID HOLLOWED BLOCK AND MOVABLE RELATIVE TO THE BLOCK; C. A SCORING DEVICE RESILIENTLY FASTENED TO SAID PISTON AT ONE END THEREOF; D. MEANS FOR SUPPLYING AIR UNDER PRESSURE TO THE HOLLOWED PORTION OF SAID BLOCK, THE AIR BEING TRAPPED BETWEEN THE CYLINDER AND SAID PISTON SO THAT THE PRESSURE OF THE AIR MOVES THE PISTON RELATIVE TO THE BLOCK CAUSING THE SCORING DEVICE TO EXERT A UNIFORM PRESSURE AGAINST SAID GLASS RIBBON, ONE END OF SAID CYLINDER FORMING A BASE HAVING AN OPENING THEREIN.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |