US3324772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Karl Schmidt Fa GmbH
•
Filing: 1964-05-29
•
Granted: 1967-06-13
•
Expires: 1984-05-29
Abstract
No abstract record available.
Inventors
- 👤 Wittstock Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:32
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/18; B21J; B21J5/00; B21J5/06; B21J5/12; F; F02; F02F; F02F3/00; F02F3/16; F02F2200/00; F02F2200/04; F05; F05C; F05C2201/00; F05C2201/02; F05C2201/021; F05C2201/04; F05C2201/0433; F05C2201/0448; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49249; Y10T29/49256; Y10T29/49259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
PISTON COMPRISING AS INTEGRAL ELEMENTS THEREOF A PISTON HEAD, PISTON SKIRT, AND WRIST PIN BOSSES, CHARACTERIZED BY A METAL FIBER STRUCTURE IN THE BOSSES, THE FIBER EXTENDING INWARDLY PARALLEL TO THE AXES OF THE WRIST PIN BOSSES TOWARD THE INNER ENDS THEREOF AND THEN TURNING OUTWARDLY OF THE BORES AND RUNNING RADIALLY OUTWARDLY TOWARD THE OUTER PERIPHERIES OF THE INNER SIDES OF THE BORES.
Claim 2
Dependent Claim
64 words
PISTON COMPRISING AS INTEGRAL ELEMENTS THEREOF A PISTON HEAD, PISTON SKIRT, AND WRIST PIN BOSSES, CHARACTERIZED BY A METAL FIBER STRUCTURE IN THE BOSSES, THE FIBER EXTENDING INWARDLY PARALLEL TO THE AXES OF THE WRIST PIN BOSSES TOWARD THE INNER ENDS THEREOF AND THEN TURNING OUTWARDLY OF THE BORES AND RUNNING RADIALLY OUTWARDLY TOWARD THE OUTER PERIPHERIES OF THE INNER SIDES OF THE BORES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |