US3171506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler for refrigerator compressor and comprising u-shaped members
Assignee: Danfoss AS
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Filing: 1963-11-21
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Granted: 1965-03-02
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Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Hald Therkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:18
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F04B39/0072; Y; Y10; Y10S; Y10S181/00; Y10S181/403
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
AN ACOUSTICAL MUFFLER COMPRISING A FIRST SHEET METAL MEMBER OF U-SHAPED CROSS-SECTION FORMING A PANEL PORTION AND FLANGE PORTIONS PROJECTING APPROXIMATELY PERPENDICULARLY AT TWO OPPOSITE SIDES OF SAID PANEL PORTION AND AT LEAST TWO ADDITIONAL SHEET METAL MEMBERS OF U-SHAPED CROSS-SECTION EACH FORMING A PANEL PORTION AND FLANGE PORTIONS PROJECTING APPROXIMATELY PERPENDICULARLY AT TWO OPPOSITE SIDES OF SAID PANEL PORTION, THE LENGTH OF EACH OF SAID ADDITIONAL MEMBERS BEING SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID FIRST MEMBER BETWEEN ITS SAID FLANGE PORTIONS AND THE COMBINED WIDTH OF SAID ADDITIONAL MEMBERS BEING APPROXIMATELY EQUAL TO THE LENGTH OF SAID FIRST MEMBER, SAID ADDITIONAL MEMBERS BEING NESTED BESIDE ONE ANOTHER IN SAID FIRST MEMBER WITH SAID ADDITIONAL MEMBER REVERSED RELATIVE TO SAID FIRST MEMBER AND EXTENDING TRANSVERSELY THEREOF TO FORM A PLURALITY OF CHAMBERS, EACH HAVING OPPOSITE WALLS FORMED BY SAID PANEL PORTIONS OF SAID FIRST MEMBER AND SAID ADDITIONAL MEMBERS RESPECTIVELY AND SIDE FORMED BY SAID FLANGE PORTIONS OF SAID FIRST AND ADDITIONAL MEMBERS, AND MEANS PROVIDING COMMUNICATION WITH SAID CHAMBERS.
Claim 2
Dependent Claim
171 words
AN ACOUSTICAL MUFFLER COMPRISING A FIRST SHEET METAL MEMBER OF U-SHAPED CROSS-SECTION FORMING A PANEL PORTION AND FLANGE PORTIONS PROJECTING APPROXIMATELY PERPENDICULARLY AT TWO OPPOSITE SIDES OF SAID PANEL PORTION AND AT LEAST TWO ADDITIONAL SHEET METAL MEMBERS OF U-SHAPED CROSS-SECTION EACH FORMING A PANEL PORTION AND FLANGE PORTIONS PROJECTING APPROXIMATELY PERPENDICULARLY AT TWO OPPOSITE SIDES OF SAID PANEL PORTION, THE LENGTH OF EACH OF SAID ADDITIONAL MEMBERS BEING SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID FIRST MEMBER BETWEEN ITS SAID FLANGE PORTIONS AND THE COMBINED WIDTH OF SAID ADDITIONAL MEMBERS BEING APPROXIMATELY EQUAL TO THE LENGTH OF SAID FIRST MEMBER, SAID ADDITIONAL MEMBERS BEING NESTED BESIDE ONE ANOTHER IN SAID FIRST MEMBER WITH SAID ADDITIONAL MEMBER REVERSED RELATIVE TO SAID FIRST MEMBER AND EXTENDING TRANSVERSELY THEREOF TO FORM A PLURALITY OF CHAMBERS, EACH HAVING OPPOSITE WALLS FORMED BY SAID PANEL PORTIONS OF SAID FIRST MEMBER AND SAID ADDITIONAL MEMBERS RESPECTIVELY AND SIDE FORMED BY SAID FLANGE PORTIONS OF SAID FIRST AND ADDITIONAL MEMBERS, AND MEANS PROVIDING COMMUNICATION WITH SAID CHAMBERS.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |