Patent US3328996A successfully refreshed from Google Patents.
US3328996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and method for manufacturing elbow fittings from straight tubing
Assignee: BUIGSTAAL TUBE BENDING SYSTEMS BV
•
Filing: 1964-02-18
•
Granted: 1967-07-04
•
Expires: 1984-02-18
Abstract
No abstract record available.
Inventors
- 👤 Pin Pouw Houw
- 👤 Verkaik Arie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:31
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/28; B21D; B21D11/00; B21D11/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A DEVICE FOR MANUFACTURING ELBOW FITTINGS FROM TUBING COMPRISING: (A) DIE PARTS COUPLED TOGETHER WITHIN A FRAME, ONE SURFACE OF A DIE BEING IN CONTACT WITH A SURFACE OF ANOTHER DIE; SAID PARTS BEING RESPECTIVELY MOVABLE PARALLEL TO SAID SURFACES OF CONTACT; (B) EACH PART BEING PROVIDED WITH A BORE COMMUNICATING WITH THE SURFACE OF CONTACT, SAID BORE BEING ADAPTED TO RECEIVE SAID TUBING, A SUBSTANTIALLY INCOMPRESSIBLE MEDIUM WITHIN SAID TUBING; (C) A PRESSURE TRANSMITTING PLUNGER IN AT LEAST ON BORE ADAPTED TO MOVE TOWARDS THE SURFACE OF CONTACT; (D) AT LEAST ONE DIE PART BEING PROVIDED WITH A GROOVE COMMUNICATING WITH SAID BORE; AND (E) A CAM MOUNTED ON THE OTHER PART, WHICH FITS MOVABLY INTO SAID GROOVE.
Claim 2
Independent Claim
119 words
A DEVICE FOR MANUFACTURING ELBOW FITTINGS FROM TUBING COMPRISING: (A) DIE PARTS COUPLED TOGETHER WITHIN A FRAME, ONE SURFACE OF A DIE BEING IN CONTACT WITH A SURFACE OF ANOTHER DIE; SAID PARTS BEING RESPECTIVELY MOVABLE PARALLEL TO SAID SURFACES OF CONTACT; (B) EACH PART BEING PROVIDED WITH A BORE COMMUNICATING WITH THE SURFACE OF CONTACT, SAID BORE BEING ADAPTED TO RECEIVE SAID TUBING, A SUBSTANTIALLY INCOMPRESSIBLE MEDIUM WITHIN SAID TUBING; (C) A PRESSURE TRANSMITTING PLUNGER IN AT LEAST ON BORE ADAPTED TO MOVE TOWARDS THE SURFACE OF CONTACT; (D) AT LEAST ONE DIE PART BEING PROVIDED WITH A GROOVE COMMUNICATING WITH SAID BORE; AND (E) A CAM MOUNTED ON THE OTHER PART, WHICH FITS MOVABLY INTO SAID GROOVE.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |