US4886433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Displacement machine having spiral chamber and displacement member of increasing radial widths
Assignee: Agintec AG
•
Filing: 1988-06-15
•
Granted: 1989-12-12
•
Expires: 2008-06-15
Abstract
Abstract A displacement machine for fluids, having a displacement chamber, arranged in the manner of a groove in a fixed casing, running approximately spirally from an inlet to an outlet and spanning more than 360°, into which chamber a likewise essentially spiral displacement body engages, which is held eccentrically drivably in such a way so as to execute a circular movement limited by the peripheral walls of the displacement chamber, the radii of curvature of the displacement body and the said peripheral walls being dimensioned such that, during its circulating, twist-free movement, the displacement body at least virtually touches the inner and outer peripheral walls at a continuously progressing sealing line.
Inventors
- 👤 Hans P. Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:39
CPC Classifications
F; F01; F01C; F01C1/00; F01C1/02; F01C1/0207; F01C1/0246
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
153 words
A displacement machine for fluids, comprising: a casing member having a displacement chamber therein, said chamber being a groove having inner and outer peripheral walls and extending from an inlet to an outlet, said groove being a spiral exceeding 360°; displacement means provided with inner and outer peripheral walls corresponding to said chamber walls, said displacement means being eccentrically mounted in said chamber for circulating, twist-free movement therein in such a manner that said corresponding walls touch in a continuously progressing sealing line; said displacement means having a looping angle of less than about 400°; said chamber and said displacement means, respectively having correspondingly increasing radial widths from a first to a second end thereof; said displacement means being eccentrically mounted adjacent the second end thereof; said outlet being positioned adjacent said second end; and said displacement means provided to be driven in a direction corresponding to the increase in said radial width.
Claim 2
Dependent Claim
153 words
A displacement machine for fluids, comprising: a casing member having a displacement chamber therein, said chamber being a groove having inner and outer peripheral walls and extending from an inlet to an outlet, said groove being a spiral exceeding 360°; displacement means provided with inner and outer peripheral walls corresponding to said chamber walls, said displacement means being eccentrically mounted in said chamber for circulating, twist-free movement therein in such a manner that said corresponding walls touch in a continuously progressing sealing line; said displacement means having a looping angle of less than about 400°; said chamber and said displacement means, respectively having correspondingly increasing radial widths from a first to a second end thereof; said displacement means being eccentrically mounted adjacent the second end thereof; said outlet being positioned adjacent said second end; and said displacement means provided to be driven in a direction corresponding to the increase in said radial width.
Claim 3
Dependent Claim
41 words
The displacement machine of claim 1, wherein the outer peripheral wall of the displacement chamber includes a plurality of smoothly adjoining part circles of reduced radius, and the inner peripheral wall of the displacement chamber includes at least one part circle.
Claim 4
Dependent Claim
42 words
The displacement machine of claim 2, wherein the at least one part circle of the inner peripheral wall of the displacement chamber is at least approximately concentric to one of the part circles of the outer peripheral wall of the displacement chamber.
Claim 5
Dependent Claim
24 words
The displacement machine of claim 2, wherein mutually corresponding part circles of said inner and outer walls extend over the same degrees of angle.
Claim 6
Dependent Claim
26 words
The displacement machine of claim 1, wherein the inner peripheral wall of the displacement chamber is formed by a spiral web of approximately equal web width.
Claim 7
Dependent Claim
32 words
The displacement machine of claim 1, wherein the displacement means is provided axially on one side with a wall including means for drive input or drive output and for protection against twisting.
Claim 8
Dependent Claim
22 words
The displacement machine of claim 1, wherein the walls of either of the displacement chamber and of the displacement means are coated.
Claim 9
Dependent Claim
24 words
The displacement machine of claim 1, wherein the displacement means is provided on at least one of its peripheral walls with an axial rib.
Claim 10
Dependent Claim
19 words
The displacement machine of claim 1, wherein the displacement means and the walls of the displacement chamber are hollow.
Claim 11
Dependent Claim
14 words
The displacement machine of claim wherein the looping angle is less than about 395°.
References Cited (Backward Citations)
GB220296A
Cited
US2324168A
Cited
GB1367986A
Cited
DE2230773A1
Cited
US3884599A
Cited
DE2603462A1
Cited
DE2639174A1
Cited
US4300875A
Cited
US4382754A
Cited
US4558997A
Cited
US4627800A
Cited
US4690625A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-11 | 1993-06-12 | 1993-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-11 | 1997-06-12 | 1997-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-11 | 2001-06-12 | 2001-12-12 | $7700.00 | Window Closed / Lapsed |