US3331508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Channel supports for screen frames
Assignee: Linde Maskiner AB
•
Filing: 1964-02-28
•
Granted: 1967-07-18
•
Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 Andren Ingmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:21
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/48; B07B1/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A CHANNEL SUPPORT FOR A PLURALITY OF RECTANGULAR FRAMES HAVING A SCREEN MOUNTED IN EACH OF SAID FRAMES COMPRISING SIDE WALLS IN WHICH SAID FRAMES ARE CARRIED IN VERTICALLY SPACED RELATIONSHIP, SAID SIDE WALL COMPRISING A PLURALITY OF SPACED WALL ELEMENTS OF BENT METAL SHEETS, THE ADJACENT LONGITUDINAL EDGE PORTIONS OF ADJOINING WALL ELEMENTS HAVING ONE OF SAID EDGE PORTION LONGITUDINALLY INSERTABLE IN THE OTHER EDGE PORTION FORMING A GUIDE TO ACCOMMMODATE AND CARRY ONE SIDE OF A FRAME LONGITUDINALLY INSERTABLE THEREIN, SAID ADJOINING EDGE PORTIONS OF SAID ADJACENT WALL ELEMENTS HAVING THE FORM OF A CHANNEL OPENING INWARDLY OF THE SCREENING APPARATUS AND BEING OF INCREASING WIDTH AS VIEWED FROM THE OPEN SIDES, ONE CHANNEL HAVING AN OUTER CONTOUR SUBSTANTIALLY CORRESPONDING IN SIZE AND SHAPE TO THE INNER CONTOUR OF THE OTHER CHANNEL.
Claim 2
Dependent Claim
134 words
A CHANNEL SUPPORT FOR A PLURALITY OF RECTANGULAR FRAMES HAVING A SCREEN MOUNTED IN EACH OF SAID FRAMES COMPRISING SIDE WALLS IN WHICH SAID FRAMES ARE CARRIED IN VERTICALLY SPACED RELATIONSHIP, SAID SIDE WALL COMPRISING A PLURALITY OF SPACED WALL ELEMENTS OF BENT METAL SHEETS, THE ADJACENT LONGITUDINAL EDGE PORTIONS OF ADJOINING WALL ELEMENTS HAVING ONE OF SAID EDGE PORTION LONGITUDINALLY INSERTABLE IN THE OTHER EDGE PORTION FORMING A GUIDE TO ACCOMMMODATE AND CARRY ONE SIDE OF A FRAME LONGITUDINALLY INSERTABLE THEREIN, SAID ADJOINING EDGE PORTIONS OF SAID ADJACENT WALL ELEMENTS HAVING THE FORM OF A CHANNEL OPENING INWARDLY OF THE SCREENING APPARATUS AND BEING OF INCREASING WIDTH AS VIEWED FROM THE OPEN SIDES, ONE CHANNEL HAVING AN OUTER CONTOUR SUBSTANTIALLY CORRESPONDING IN SIZE AND SHAPE TO THE INNER CONTOUR OF THE OTHER CHANNEL.
References Cited (Backward Citations)
GB189917278A
Cited
US786322A
Cited
US929044A
Cited
US1353549A
Cited
US1444275A
Cited
US2153879A
Cited
US2122629A
Cited
FR924237A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |