US3349153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for deep-drawing films and foils
Assignee: Kalle GmbH and Co KG
•
Filing: 1963-10-01
•
Granted: 1967-10-24
•
Expires: 1983-10-01
Abstract
No abstract record available.
Inventors
- 👤 Beck Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:25
CPC Classifications
B; B21; B21D; B21D22/00; B21D22/20; B21D22/22; B29; B29C; B29C51/00; B29C51/08; B29C51/26; B29C51/261; B29C51/262; B29K; B29K2705/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR DEEP-DRAWING A DEFOMABLE ARTICLE WHICH COMPRISES CLAMPING THE ARTICLE AT THE OUTER MARGIN THEREOF, AND DEFORMING THE ARTICLE IN AN INTERMEDIATE DEFORMING ZONE WHILE RELIEVING THE CLAMPING PRESSURE BY CONDUCTING A COMPRESSED GAS TO AT LEAST ONE OF THE CLAMPED SURFACES, WHEREBY THE MARGIN IS PERMITTED TO SLIDE INWARDLY AND THE ORGINIAL AREA OF DEFORMATION OF THE ARTICLE IS INCREASED.
Claim 2
Dependent Claim
63 words
A PROCESS FOR DEEP-DRAWING A DEFOMABLE ARTICLE WHICH COMPRISES CLAMPING THE ARTICLE AT THE OUTER MARGIN THEREOF, AND DEFORMING THE ARTICLE IN AN INTERMEDIATE DEFORMING ZONE WHILE RELIEVING THE CLAMPING PRESSURE BY CONDUCTING A COMPRESSED GAS TO AT LEAST ONE OF THE CLAMPED SURFACES, WHEREBY THE MARGIN IS PERMITTED TO SLIDE INWARDLY AND THE ORGINIAL AREA OF DEFORMATION OF THE ARTICLE IS INCREASED.
References Cited (Backward Citations)
US2733493A
Cited
US1861337A
Cited
US2120328A
Cited
US2632227A
Cited
US2821156A
Cited
US2973558A
Cited
US3152564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |