US3147726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clinching apparatus
Assignee: British Federal Welder and Machine Co Ltd
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Filing: 1961-08-23
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Granted: 1964-09-08
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Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Tribe Thomas Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:41
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/02; B21D39/021; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53709; Y10T29/53787; Y10T29/53791
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
CLINCHING APPARATUS COMPRISING A FRAME, CRADLE MEANS ON THE FRAME TO STATION A SHEET METAL PANEL PRESENTING A SURFACE AND A MARGINAL FLANGE UPSTANDING FROM THE SURFACE, A FIRST FLUID PRESSURE ACTUATED RAM MEANS ARRANGED ON SAID FRAME TO EXERT ITS THRUST IN A FIRST DIRECTION SUBSTANTIALLY NORMAL TO THE UPSTANDING FLANGE, A SECOND FLUID PRESSURE ACTUATED RAM MEANS ARRANGED TO EXERT ITS THRUST IN A SECOND DIRECTION SUBSTANTIALLY NORMAL TO THE PANEL SURFACE, A SINGLE TOOL MEMBER CONNECTED TO BOTH SAID RAM MEANS SO AS TO BE ADVANCED BY SAID FIRST RAM MEANS IN SAID FIRST DIRECTION TO EFFECT A PRE-FORMING OPERATION BENDING THE UPSTANDING FLANGE TO AN ACUTE ANGLE TO THE PANEL SURFACE AND BY SAID SECOND RAM MEANS IN SAID SECOND DIRECTION TO EFFECT A CLINCHING OPERATION CLINCHING SUCH PRE-FORMED FLANGE TOWARDS THE PANEL SURFACE, A FLUID PRESSURE CIRCUIT INCLUDING SEPARATE SUPPLY LINES THROUGH WHICH SAID RAM MEANS ARE ACTUATED FROM A COMMON FLUID-PRESSURE SOURCE, AND SEQUENCE CONTROL MEANS ASSOCIATED WITH SAID CIRCUIT TO AUTOMATICALLY ENSURE COMPLETION OF THE PRE-FORMING OPERATION BEFORE THE CLINCHING OPERATION CAN BE EFFECTED.
Claim 2
Dependent Claim
181 words
CLINCHING APPARATUS COMPRISING A FRAME, CRADLE MEANS ON THE FRAME TO STATION A SHEET METAL PANEL PRESENTING A SURFACE AND A MARGINAL FLANGE UPSTANDING FROM THE SURFACE, A FIRST FLUID PRESSURE ACTUATED RAM MEANS ARRANGED ON SAID FRAME TO EXERT ITS THRUST IN A FIRST DIRECTION SUBSTANTIALLY NORMAL TO THE UPSTANDING FLANGE, A SECOND FLUID PRESSURE ACTUATED RAM MEANS ARRANGED TO EXERT ITS THRUST IN A SECOND DIRECTION SUBSTANTIALLY NORMAL TO THE PANEL SURFACE, A SINGLE TOOL MEMBER CONNECTED TO BOTH SAID RAM MEANS SO AS TO BE ADVANCED BY SAID FIRST RAM MEANS IN SAID FIRST DIRECTION TO EFFECT A PRE-FORMING OPERATION BENDING THE UPSTANDING FLANGE TO AN ACUTE ANGLE TO THE PANEL SURFACE AND BY SAID SECOND RAM MEANS IN SAID SECOND DIRECTION TO EFFECT A CLINCHING OPERATION CLINCHING SUCH PRE-FORMED FLANGE TOWARDS THE PANEL SURFACE, A FLUID PRESSURE CIRCUIT INCLUDING SEPARATE SUPPLY LINES THROUGH WHICH SAID RAM MEANS ARE ACTUATED FROM A COMMON FLUID-PRESSURE SOURCE, AND SEQUENCE CONTROL MEANS ASSOCIATED WITH SAID CIRCUIT TO AUTOMATICALLY ENSURE COMPLETION OF THE PRE-FORMING OPERATION BEFORE THE CLINCHING OPERATION CAN BE EFFECTED.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |