US2559705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drawing thermoplastic sheets
Assignee: Individual
•
Filing: 1947-07-08
•
Granted: 1951-07-10
•
Expires: 1967-07-08
Abstract
No abstract record available.
Inventors
- 👤 Gustave W Borkland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:11
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/261; B29C51/262; B29C51/10; Y; Y10; Y10S; Y10S264/00; Y10S264/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
APPARATUS FOR FORMING THERMOPLASTIC SHEET MATERIAL INTO A RECESSED FORMATION COMPRISING A DIE HAVING A RECESS THEREIN HAVING A FORMING SURFACE, A SHEET-HOLDING RECESS BOUNDING FRAME FOR USE WITH SAID FORMING SURFACE, RETAINING MEANS FOR HOLDING ON SAID FRAME A FLAT SHEET OF THERMOPLASTIC MATERIAL HEATED TO A PLASTICIZING TEMPERATURE AGAINST LATERAL SLIPPING WHILE THE PORTION OF SAID SHEET TO BE FORMED IN SAID DIE IS OTHERWISE CONTACTED ONLY BY THE ATMOSPHERE, MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN SAID DIE AND FRAME TO BRING A SURFACE OF THE FLAT SHEET INTO SEALING ENGAGEMENT AROUND AND OVER THE RECESS WHILE SAID PORTION OF SAID SHEET TO BE FORMED IS FREE OF CONTACT WITH SAID DIE AND FRAME, MEANS FOR EFFECTING AIR PRESSURE DIFFERENTIAL BETWEEN THE TWO FACES OF SAID PORTION OF SAID SHEET WHILE ITS EDGES ARE HELD AGAINST SLIPPING BY SAID RETAINING MEANS TO FORCE SAID PORTION OF SAID SHEET INTO THE RECESS AND AGAINST THE FORMING SURFACE, AND MEANS FOR MOVING SAID FRAME WITH THE SHEET MATERIAL IN RECESSED FORMATION THEREON AWAY FROM SAID DYE.
Claim 2
Dependent Claim
176 words
APPARATUS FOR FORMING THERMOPLASTIC SHEET MATERIAL INTO A RECESSED FORMATION COMPRISING A DIE HAVING A RECESS THEREIN HAVING A FORMING SURFACE, A SHEET-HOLDING RECESS BOUNDING FRAME FOR USE WITH SAID FORMING SURFACE, RETAINING MEANS FOR HOLDING ON SAID FRAME A FLAT SHEET OF THERMOPLASTIC MATERIAL HEATED TO A PLASTICIZING TEMPERATURE AGAINST LATERAL SLIPPING WHILE THE PORTION OF SAID SHEET TO BE FORMED IN SAID DIE IS OTHERWISE CONTACTED ONLY BY THE ATMOSPHERE, MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN SAID DIE AND FRAME TO BRING A SURFACE OF THE FLAT SHEET INTO SEALING ENGAGEMENT AROUND AND OVER THE RECESS WHILE SAID PORTION OF SAID SHEET TO BE FORMED IS FREE OF CONTACT WITH SAID DIE AND FRAME, MEANS FOR EFFECTING AIR PRESSURE DIFFERENTIAL BETWEEN THE TWO FACES OF SAID PORTION OF SAID SHEET WHILE ITS EDGES ARE HELD AGAINST SLIPPING BY SAID RETAINING MEANS TO FORCE SAID PORTION OF SAID SHEET INTO THE RECESS AND AGAINST THE FORMING SURFACE, AND MEANS FOR MOVING SAID FRAME WITH THE SHEET MATERIAL IN RECESSED FORMATION THEREON AWAY FROM SAID DYE.
References Cited (Backward Citations)
US2229613A
Cited
US2295066A
Cited
US2328798A
Cited
US2377946A
Cited
US2367642A
Cited
US2383810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |