Patent US3138077A successfully refreshed from Google Patents.
US3138077A
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Filter pleating apparatus
Assignee: CAMBRIDGE FILTER Manufacturing CORP
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Filing: 1960-03-07
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Granted: 1964-06-23
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Expires: 1980-03-07
Abstract
No abstract record available.
Inventors
- 👤 Carl J Bauder
- 👤 Paul M Engle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:39
CPC Classifications
B; B31; B31D; B31D5/00; B31D5/0082; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; Y; Y10; Y10S; Y10S493/00; Y10S493/941; Y10S55/00; Y10S55/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
APPARATUS FOR THE MANUFACTURE OF PLEATED AIR FILTER UNITS COMPRISING A FRAME, A LOWER TRACKWAY MOUNTED ON THE FRAME, AN UPPER TRACKWAY MOUNTED ON THE FRAME AND EXTENDING PARALLEL WITH THE LOWER TRACKWAY, CARRIAGES MOUNTED FOR MOVEMENT ON EACH OF SAID TRACKWAYS, EACH OF SAID CARRIAGES HAVING A PLURALITY OF PLEATING PLATES PIVOTALLY MOUNTED THEREON ON AXES TRANSVERSE OF THE TRACKWAY, MEANS ASSOCIATED WITH EACH OF SAID TRACKWAYS AND SAID PLATES FOR SWINGING THE PLATES OF EACH OF SAID CARRIAGES ALTERNATELY AND SEQUENTIALLY TO A VERTICAL POSITION
Claim 2
Dependent Claim
87 words
APPARATUS FOR THE MANUFACTURE OF PLEATED AIR FILTER UNITS COMPRISING A FRAME, A LOWER TRACKWAY MOUNTED ON THE FRAME, AN UPPER TRACKWAY MOUNTED ON THE FRAME AND EXTENDING PARALLEL WITH THE LOWER TRACKWAY, CARRIAGES MOUNTED FOR MOVEMENT ON EACH OF SAID TRACKWAYS, EACH OF SAID CARRIAGES HAVING A PLURALITY OF PLEATING PLATES PIVOTALLY MOUNTED THEREON ON AXES TRANSVERSE OF THE TRACKWAY, MEANS ASSOCIATED WITH EACH OF SAID TRACKWAYS AND SAID PLATES FOR SWINGING THE PLATES OF EACH OF SAID CARRIAGES ALTERNATELY AND SEQUENTIALLY TO A VERTICAL POSITION
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |