Patent US4764094A successfully refreshed from Google Patents.
US4764094A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw machine having a plurality of symmetrically arranged rotors
Assignee: VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT BUROVOI TEKHNIKI
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Filing: 1985-07-22
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Granted: 1988-08-16
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Expires: 2005-07-22
Abstract
Abstract The screw machine comprises consecutively mounted screw mechanisms (6, 7 and 8, 9) incorporating coaxially arranged stators (10, 12 and 14, 16) and rotors (11, 13 and 15, 17) disposed therein whose axes are offset with respect to the central axis of the stators (10, 12 and 14, 16) by the amount of eccentricity "e" of the screw mechanisms (6, 7 and 8, 9). The screw mechanisms (6, 7 and 8, 9) are grouped into modules (4, and 5) and the modules proper are grouped into blocks (3). The axes of the rotors (11, 13, 15, 17) of the screw mechanisms (6, 7 and 8, 9) in the module (4 and 5) and the modules (4, and 5) proper in the block (3) are arranged symmetrically relative to the central axis.
Inventors
- 👤 Dmitry F. Baldenko
- 👤 Jury V. Vadetsky
- 👤 Moisei T. Gusman
- 👤 Valery I. Semenets
- 👤 Valentina A. Khabetskaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:17
CPC Classifications
F; F01; F01C; F01C11/00; F01C11/002; E; E21; E21B; E21B4/00; E21B4/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A screw machine which comprises consecutively mounted screw mechanisms comprising a plurality of coaxially arranged stators and rotors disposed therein, the axis of the rotor is offset relative to the axis of the stator within which it is disposed, by the amount of eccentricity, "e", of the screw mechanism, wherein all of the stators have a common axis and wherein the screw mechanisms are grouped into modules each comprising at least two mechanisms and the modules are grouped into blocks each comprising at least two modules, the axes of the rotors of the screw mechanisms forming the modules and axes of the rotors of the screw mechanisms of the modules forming the blocks are arranged symmetrically with respect to the common axis about a circumference of radius "e" from said common axis, and the distance between axes of the rotors in adjacent screw mechanisms in each module are the same.
Claim 2
Dependent Claim
150 words
A screw machine which comprises consecutively mounted screw mechanisms comprising a plurality of coaxially arranged stators and rotors disposed therein, the axis of the rotor is offset relative to the axis of the stator within which it is disposed, by the amount of eccentricity, "e", of the screw mechanism, wherein all of the stators have a common axis and wherein the screw mechanisms are grouped into modules each comprising at least two mechanisms and the modules are grouped into blocks each comprising at least two modules, the axes of the rotors of the screw mechanisms forming the modules and axes of the rotors of the screw mechanisms of the modules forming the blocks are arranged symmetrically with respect to the common axis about a circumference of radius "e" from said common axis, and the distance between axes of the rotors in adjacent screw mechanisms in each module are the same.
Claim 3
Dependent Claim
31 words
A screw machine according to claim 1 wherein a guide unit is provided between the rotors of the screw mechanism in each module and between the screw mechanism in each block.
Claim 4
Dependent Claim
35 words
A screw mechanism of claim 2, wherein the guide unit is in the form of a bearing mounted crank connecting adjacent rotors, the axis of the bearings coinciding with the axis of a respective rotor.
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) | 1991-08-16 | 1992-02-15 | 1992-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-16 | 1996-02-15 | 1996-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-16 | 2000-02-15 | 2000-08-16 | $7700.00 | Window Closed / Lapsed |