Patent US3248977A successfully refreshed from Google Patents.
US3248977A
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Method for punching acoustical tile
Assignee: Armstrong World Industries Inc
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Filing: 1965-02-10
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Granted: 1966-05-03
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Expires: 1985-02-10
Abstract
No abstract record available.
Inventors
- 👤 Paul F Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:09
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/02; Y; Y10; Y10T; Y10T83/00; Y10T83/02; Y10T83/0237; Y10T83/0252; Y10T83/04; Y10T83/0524; Y10T83/0586; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/215; Y10T83/2153; Y10T83/808; Y10T83/825; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF PRODUCING ARTIFICIAL OPENINGS IN ACOUSTICAL MATERIAL, THE STEPS COMPRISING PLACING A BLANK OF MATERIAL TO BE PERFORATED IN ALIGNMENT WITH A RECIPROCATING PUNCH PRESS HEAD, FORCING PUNCHES CARRIED BY ONE PLATE OF SAID HEAD INTO THE SURFACE OF THE BLANK AND THEREAFTER FORCING PUNCHES CARRIED BY A SECOND PLATE ON SAID HEAD INTO THE SURFACE OF THE BLANK WHILE THE FIRST PUNCHES REMAIN EMBEDDED THERIN, WITHDRAWING THE SECOND SET OF PUNCHES FROM THE BLANK WHILE THE FIRST PLATE IS IN ENGAGEMENT THEREWITH AND AFTER WITHDRAWING THE FIRST SET OF PUNCHES.
Claim 2
Independent Claim
93 words
A METHOD OF PRODUCING ARTIFICIAL OPENINGS IN ACOUSTICAL MATERIAL, THE STEPS COMPRISING PLACING A BLANK OF MATERIAL TO BE PERFORATED IN ALIGNMENT WITH A RECIPROCATING PUNCH PRESS HEAD, FORCING PUNCHES CARRIED BY ONE PLATE OF SAID HEAD INTO THE SURFACE OF THE BLANK AND THEREAFTER FORCING PUNCHES CARRIED BY A SECOND PLATE ON SAID HEAD INTO THE SURFACE OF THE BLANK WHILE THE FIRST PUNCHES REMAIN EMBEDDED THERIN, WITHDRAWING THE SECOND SET OF PUNCHES FROM THE BLANK WHILE THE FIRST PLATE IS IN ENGAGEMENT THEREWITH AND AFTER WITHDRAWING THE FIRST SET OF PUNCHES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |