US3645358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Muffler for hermetically sealed motor compressors
Assignee: Toshiba Corp
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Filing: 1970-12-29
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Granted: 1972-02-29
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Expires: 1990-12-29
Abstract
Abstract A muffler for hermetically sealed motor compressors comprising a muffler cup constituting a resonance chamber therein, two linearly arranged tubings penetrating the muffler cup and engageably joined in its interior so as to constitute a gas passage and a plurality of openings formed at the joint of said tubings so as to cause their interior to communicate with the resonance chamber whereby noises generated by compressed gases are absorbed in the resonance chamber through said openings for silent operation of a compressor.
Inventors
- 👤 Tadao Kubota
- 👤 Takashi Matsuzaka
- 👤 Seizi Inokuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:04
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/0027; F04B39/0055; F04B39/0066; Y; Y10; Y10S; Y10S181/00; Y10S181/403
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
97 words
A muffler for hermetically sealed motor compressors comprising a muffler cup including a resonance chamber; a first gas tubing having an overlapping part formed at its open end disposed in the resonance chamber; a second gas tubing communicating with a condenser and having an overlapping part formed at the open end of said tubing so as to receive the overlapping part of the first gas tubing; and a plurality of gaps provided in the space defined between said overlapping parts so as to cause the interior of both tubings to communicate with that of the resonance chamber.
Claim 2
Dependent Claim
97 words
A muffler for hermetically sealed motor compressors comprising a muffler cup including a resonance chamber; a first gas tubing having an overlapping part formed at its open end disposed in the resonance chamber; a second gas tubing communicating with a condenser and having an overlapping part formed at the open end of said tubing so as to receive the overlapping part of the first gas tubing; and a plurality of gaps provided in the space defined between said overlapping parts so as to cause the interior of both tubings to communicate with that of the resonance chamber.
Claim 3
Dependent Claim
97 words
The muffler according to claim 1 wherein the overlapping part of the first gas tubing is formed into a conical shape, the inner wall of the overlapping part of the second gas tubing takes a funneled shape so as to allow the outer peripheral surface of the overlapping part of the first gas tubing to fit in therewith and the gaps are provided in the space defined between the projections formed on the inner wall of the overlapping part of the second tubing and the outer peripheral surface of the overlapping part of the first gas tubing.
Claim 4
Dependent Claim
74 words
The muffler according to claim 1 wherein the overlapping part of the second gas tubing takes a tubular form with an enlarged diameter so as to receive the overlapping part of the first gas tubing and the gaps are provided in the space defined between the projections formed on the inner wall of the overlapping part of the second tubing and the outer peripheral surface of the overlapping part of the first gas tubing.
Claim 5
Dependent Claim
73 words
The muffler according to claim 1 wherein the outer periphery of the overlapping part of the first gas tubing takes a conical form and the overlapping part of the second gas tubing takes a funneled form having a substantially elliptic cross section, and the gaps are defined by the inner wall of the overlapping part of the second gas tubing and the outer wall of the overlapping part of the first gas tubing.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |