Patent US3864064A successfully refreshed from Google Patents.
US3864064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction muffler tube for compressor
Assignee: Sundstrand Corp
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Filing: 1973-03-12
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Granted: 1975-02-04
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Expires: 1993-03-12
Abstract
Abstract A gas compressor having a suction muffler assembly for attenuating both high and low frequency noise produced by the inlet valving of the compressor, including an inner suction tube extending from the compressor intake to a muffler and a by-pass tube surrounding the suction tube with the by-pass tube having by-pass apertures in the upper end thereof, whereby the effective cross-sectional area of the suction intake tube may be reduced thereby attenuating low frequency noise while at the same time retaining adequate gas inflow to the compressor intake.
Inventors
- 👤 Edwin L Gannaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:54
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/12; F04B39/0027; F04B39/0055; F04B39/0066; Y; Y10; Y10S; Y10S181/00; Y10S181/403
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A gas compressor, comprising: a housing means, a compressor in said housing means having intake valving, an intake manifold leading to said intake valving, intake muffler means opening into said housing means, an intake muffler tube leading from said muffler means to said intake manifold, and a by-pass tube leading to said intake manifold and opening into said housing means without passing into the muffler means, said by-pass tube being concentric with said intake tube and surrounding the same.
Claim 2
Dependent Claim
79 words
A gas compressor, comprising: a housing means, a compressor in said housing means having intake valving, an intake manifold leading to said intake valving, intake muffler means opening into said housing means, an intake muffler tube leading from said muffler means to said intake manifold, and a by-pass tube leading to said intake manifold and opening into said housing means without passing into the muffler means, said by-pass tube being concentric with said intake tube and surrounding the same.
Claim 3
Dependent Claim
19 words
A gas compressor as defined in claim 1, wherein said by-pass tube has apertures therein for attenuating intake noise.
Claim 4
Dependent Claim
25 words
A gas compressor as defined in claim 2 wherein said intake tube and said by-pass tube each have a smaller cross-section than said intake manifold.
Claim 5
Dependent Claim
132 words
A gas compressor, comprising: a housing, an electric motor in said housing, a reciprocating piston compressor in said housing, mounted below and driven by said electric motor, said compressor having inlet valving which generates noise, an intake manifold connected to said inlet valving, muffler means mounted above the electric motor, a suction inlet tube extending from the muffler means alongside the electric motor to the intake manifold, and means for reducing the effective cross-section of the suction inlet tube without restricting the inlet gas flow to the intake manifold including a noise reducing by-pass tube surrounding the inlet tube and opening into the intake manifold, said by-pass tube having a closed upper end engaging the suction inlet tube, said by-pass tube having aperture means therein permitting gas inflow and also attenuating noise.
Claim 6
Dependent Claim
132 words
A gas compressor, comprising: a housing, an electric motor in said housing, a reciprocating piston compressor in said housing, mounted below and driven by said electric motor, said compressor having inlet valving which generates noise, an intake manifold connected to said inlet valving, muffler means mounted above the electric motor, a suction inlet tube extending from the muffler means alongside the electric motor to the intake manifold, and means for reducing the effective cross-section of the suction inlet tube without restricting the inlet gas flow to the intake manifold including a noise reducing by-pass tube surrounding the inlet tube and opening into the intake manifold, said by-pass tube having a closed upper end engaging the suction inlet tube, said by-pass tube having aperture means therein permitting gas inflow and also attenuating noise.
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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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |