US3354793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston for internal combustion engines
Assignee: Mahle GmbH
•
Filing: 1965-10-04
•
Granted: 1967-11-28
•
Expires: 1985-10-04
Abstract
No abstract record available.
Inventors
- 👤 Meier Alfred
- 👤 Kohl Eberhard
- 👤 Rossmann Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:51
CPC Classifications
F; F02; F02F; F02F3/00; F02F3/28; F02F3/16; F02F3/18; F02F3/20; F02F3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN AN INTERNAL COMBUSTION ENGINE PISTON HAVING A PISTON HEAD WITH A MEMBER INSERTED THEREIN TO FORM A HOLLOW CHAMBER IN SAID HEAD, AND A CHARGED PARTICLE BEAM WELD IN THE SEAMS BETWEEN SAID HEAD AND SAID MEMBER, THE IMPROVEMENT IN WHICH THE BEAM WELDS EXTEND FROM THE OUTER SURFACE OF THE PISTON HEAD THROUGH THE SEAMS AND INTO THE BODY OF SAID HEAD WITHOUT ENTERING SAID CHAMBER, THE ADJOINING CONTACTING INTERIOR SURFACES BETWEEN SAID HEAD AND SAID MEMBER BEING WELDED BY THE HEAD CONDUCTED TO
Claim 2
Dependent Claim
86 words
IN AN INTERNAL COMBUSTION ENGINE PISTON HAVING A PISTON HEAD WITH A MEMBER INSERTED THEREIN TO FORM A HOLLOW CHAMBER IN SAID HEAD, AND A CHARGED PARTICLE BEAM WELD IN THE SEAMS BETWEEN SAID HEAD AND SAID MEMBER, THE IMPROVEMENT IN WHICH THE BEAM WELDS EXTEND FROM THE OUTER SURFACE OF THE PISTON HEAD THROUGH THE SEAMS AND INTO THE BODY OF SAID HEAD WITHOUT ENTERING SAID CHAMBER, THE ADJOINING CONTACTING INTERIOR SURFACES BETWEEN SAID HEAD AND SAID MEMBER BEING WELDED BY THE HEAD CONDUCTED TO
References Cited (Backward Citations)
US2198689A
Cited
DE733442C
Cited
FR880033A
Cited
US2720193A
Cited
US2882106A
Cited
US2772933A
Cited
CH371663A
Cited
FR1230754A
Cited
US2987610A
Cited
DE1103698B
Cited
US3075817A
Cited
FR1301299A
Cited
US3258576A
Cited
US3190273A
Cited
US3221722A
Cited
US3221718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |