US3619086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-contained centrifugal refrigerant gas compressor and electric motor
Assignee: Daikin Applied Americas Inc
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Filing: 1970-02-26
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Granted: 1971-11-09
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Expires: 1990-02-26
Abstract
Abstract A self-contained electric motor-driven refrigerant gas compressor assembly is comprised of a bearing support member having a first cantilevered bearing assembly support means projecting from its back side with an electric motor armature shaft journaled therein and a second cantilevered bearing assembly support means projecting from its front side with a centrifugal gas impeller and shaft journaled therein. The armature shaft projects through the support member to its front side and suitable means for rotatably interconnecting the projecting armature shaft and the impeller shaft is provided on the front side.
Inventors
- 👤 John G Johnson
- 👤 James H Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:23
CPC Classifications
F; F04; F04D; F04D25/00; F04D25/02; F04D25/06; F04D25/0606; F04D17/00; F04D17/08; F04D17/10; F04D29/00; F04D29/60; F04D29/62; F04D29/624; F04D29/66; F04D29/661; F04D29/663
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A self contained electric motor-driven gas compressor assembly comprising, a bearing support member having a front side and a back side, first bearing assembly support means projecting from the back side of said support, an electric motor armature shaft journaled in said first bearing assembly support means with an end extending through the support to the front side of the support, second bearing assembly support means projecting from the front side of said support, a rotatable gas impeller and shaft journaled in said second bearing assembly support means, means rotatably interconnecting the extended end of said armature shaft and and said gas-impeller shaft on the front side of said support member, a gas compressor housing detachably secured to the front side of said support member, and a compressed gas-collecting scroll supported between an inside wall of said compressor housing and the impeller end of said second bearing means in a position surrounding said rotatable impeller.
Claim 2
Dependent Claim
155 words
A self contained electric motor-driven gas compressor assembly comprising, a bearing support member having a front side and a back side, first bearing assembly support means projecting from the back side of said support, an electric motor armature shaft journaled in said first bearing assembly support means with an end extending through the support to the front side of the support, second bearing assembly support means projecting from the front side of said support, a rotatable gas impeller and shaft journaled in said second bearing assembly support means, means rotatably interconnecting the extended end of said armature shaft and and said gas-impeller shaft on the front side of said support member, a gas compressor housing detachably secured to the front side of said support member, and a compressed gas-collecting scroll supported between an inside wall of said compressor housing and the impeller end of said second bearing means in a position surrounding said rotatable impeller.
Claim 3
Dependent Claim
22 words
The invention of claim 1 in which an electric motor housing is detachably secured to the back side of said support member.
Claim 4
Dependent Claim
38 words
The invention of claim 2 in which an electric motor field coil assembly is contained within said motor housing and an electric motor armature is mounted on said armature shaft extending from the back side of said support.
Claim 5
Dependent Claim
34 words
The invention of claim 1 in which said first bearing assembly support means is cantilevered out from the back side of said support member and contains the entire bearing elements for said armature shaft.
Claim 6
Dependent Claim
34 words
The invention of claim 4 in which said second bearing assembly support means is cantilevered out from the front side of said support member and contains the entire bearing elements for said impeller shaft.
Claim 7
Dependent Claim
34 words
The invention of claim 5 in which said first bearing assembly support means is cantilevered out from the back side of said support member and contains the entire bearing elements for said armature shaft.
Claim 8
Dependent Claim
27 words
The invention of claim 1 in which the bearing support member and the first and second bearing assembly support means are formed of an integral metal casting.
References Cited (Backward Citations)
US2695131A
Cited
US3131877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |