Patent US5167494A successfully refreshed from Google Patents.
US5167494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Scroll type compressor with axially supported movable scroll
Assignee: Soken Inc
•
Filing: 1991-05-23
•
Granted: 1992-12-01
•
Expires: 2011-05-23
Abstract
Abstract A scroll type compressor having movable and fixed scrolls forming a working chamber with a movable scroll supporting arrangement to prevent tilting of the movable scroll into the fixed scroll thereby making it possible to extend the axial length of the scrolls. A main supporting plate is fixed on a housing between two other supporting plates which are spacedly fixed on the movable scroll, or vice versa. The other supporting plates press on the main supporting plate from both sides via ball bearings. When the movable scroll is about to tilt, the supporting plate arrangement prevents the movable scroll from tilting.
Inventors
- 👤 Mitsuo Inagaki
- 👤 Hideaki Sasaya
- 👤 Mikio Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/06; F04C18/00; F04C18/02; F04C18/0207; F04C18/0215; F04C27/00; F04C27/005; F04C29/00; F04C29/0021; F16; F16C; F16C19/00; F16C19/02; F16C19/10; F16C2360/00; F16C2360/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A scroll type compressor comprising: a shaft having an axis and being rotatable thereon upon receiving a rotative force and having a crank portion which is eccentric to the axis of the shaft; a movable scroll supported rotatively by the crank for orbital movement around the axis of the shaft; a fixed scroll for forming a working chamber with the movable scroll, which is engaged with the movable scroll in a manner that the fixed scroll is movable away from the movable scroll; biasing means for moving the fixed scroll toward the movable scroll; controlling means for controlling a biasing force of the biasing means; and supporting means, engaged with the movable scroll, for holding the movable scroll at a relative position with respect to the fixed scroll, to keep it from moving apart from, and also from moving excessively towards the fixed scroll.
Claim 2
Dependent Claim
144 words
A scroll type compressor comprising: a shaft having an axis and being rotatable thereon upon receiving a rotative force and having a crank portion which is eccentric to the axis of the shaft; a movable scroll supported rotatively by the crank for orbital movement around the axis of the shaft; a fixed scroll for forming a working chamber with the movable scroll, which is engaged with the movable scroll in a manner that the fixed scroll is movable away from the movable scroll; biasing means for moving the fixed scroll toward the movable scroll; controlling means for controlling a biasing force of the biasing means; and supporting means, engaged with the movable scroll, for holding the movable scroll at a relative position with respect to the fixed scroll, to keep it from moving apart from, and also from moving excessively towards the fixed scroll.
Claim 3
Dependent Claim
48 words
A scroll type compressor according to claim 1, wherein the supporting means includes: a fixed supporting member having a fixed supporting surface; and a movable supporting member having a movable supporting surface which is movable with the movable scroll and is engaged with the the fixed supporting surface.
Claim 4
Dependent Claim
28 words
A scroll type compressor according to claim 1, wherein the biasing means includes a spring disposed in a discharge chamber which is formed outside of the fixed scroll.
Claim 5
Dependent Claim
23 words
A scroll type compressor according to claim 3, wherein the controlling means includes pressure control means for controlling pressure within the discharge chamber.
References Cited (Backward Citations)
US3924977A
Cited
US3874827A
Cited
US4259043A
Cited
JPS5546046A
Cited
US4650405A
Cited
US4877382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |