US3923435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant metering system for the working chambers of a rotary mechanism
Assignee: Rotary Power International Inc
•
Filing: 1974-03-21
•
Granted: 1975-12-02
•
Expires: 1994-03-21
Abstract
Abstract The lubricant metering system is for a rotary mechanism in which a rotor is supported within a housing cavity for planetary rotation and defines with the housing a plurality of working chambers which successively expand and contract as the rotor rotates. The rotary mechanism also has an inlet port means in the housing for passing gaseous fluid into the working chambers, the inlet port means and rotor being constructed and arranged to control the flow through the inlet port means to effect an opening of the inlet port means after the working chamber has commenced expansion and flow through said open inlet port means at a high velocity which may approach sonic speed through the inlet port means. The lubricant metering system is a small tube communicating at one end with a source of lubricant and disposed with the other open end communicating with the inlet port means so as to provide a droplet of lubricant to said inlet port means for entrainment by the gaseous fluid flowing through the open inlet port means.
Inventors
- 👤 Charles Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:58
CPC Classifications
F; F01; F01C; F01C21/00; F01C21/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
224 words
In a rotary mechanism having a rotor supported for planetation in a housing cavity and defining with the housing a plurality of working chambers which successively expand and contract in volumetric size as the rotor rotates and also having an inlet port means in the housing so that the rotor covers and uncovers the inlet port means with each of said working chambers and uncovers said port means only after each working chamber starts to expand in volume so that the initial opening of the inlet port means occurs when the pressure in said working chamber is substantially less than the pressure in the inlet port means, whereby the initial portion of the gaseous fluid entering a working chamber does so at relatively high velocity, a lubricant metering system for supplying lubricant to the rotor of the mechanism comprising: passageway means communicating at one end with a source of lubricant and at the other discharge end with said inlet port means at a point closely adjacent to and upstream, relative to the direction of gaseous fluid flow to the inlet port means, from the point of initial opening of the inlet port means to provide lubricant at said other end for entrainment by fluid passing through said inlet port means into said plurality of working chambers during initial opening of the inlet port means.
Claim 2
Dependent Claim
224 words
In a rotary mechanism having a rotor supported for planetation in a housing cavity and defining with the housing a plurality of working chambers which successively expand and contract in volumetric size as the rotor rotates and also having an inlet port means in the housing so that the rotor covers and uncovers the inlet port means with each of said working chambers and uncovers said port means only after each working chamber starts to expand in volume so that the initial opening of the inlet port means occurs when the pressure in said working chamber is substantially less than the pressure in the inlet port means, whereby the initial portion of the gaseous fluid entering a working chamber does so at relatively high velocity, a lubricant metering system for supplying lubricant to the rotor of the mechanism comprising: passageway means communicating at one end with a source of lubricant and at the other discharge end with said inlet port means at a point closely adjacent to and upstream, relative to the direction of gaseous fluid flow to the inlet port means, from the point of initial opening of the inlet port means to provide lubricant at said other end for entrainment by fluid passing through said inlet port means into said plurality of working chambers during initial opening of the inlet port means.
Claim 3
Dependent Claim
17 words
The apparatus of claim 1 wherein said inlet port means includes conduit means terminating in an opening.
Claim 4
Dependent Claim
35 words
The apparatus of claim 1 wherein said housing comprises end walls separated by an intermediate wall to define therebetween said cavity and wherein said inlet port means is disposed in one of said end walls.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 wherein said passageway means is a tube with its said other end open toward said working chambers.
Claim 6
Dependent Claim
52 words
The apparatus of claim 1 wherein said tube flow area is sized in relation to the viscosity of the lubricant so that the lubricant adheres to the tube and is not entrained in the fluid under conditions of critical pressure ratio, and below, of the fluid flow through said inlet port means.
Claim 7
Dependent Claim
204 words
In a rotary mechanism having a rotor supported for rotation in a housing cavity and defining with the housing a plurality of working chambers which successively expand and contract in volumetric size as the rotor rotates and in which said housing has an inlet passage for supplying working fluid to the working chambers and terminating in a port which is opened and closed as the rotor rotates and with said inlet passage opening to a working chamber after said chamber starts to increase in volume and the pressure in said chamber is substantially less than the pressure in said inlet passage at the point where said passage is opened and closed whereby the initial portion of the working fluid entering a working chamber does so at a relatively high velocity; a lubricant metering system for supplying a small quantity of lubricant to the working chambers, said system comprising: means for supplying a small quantity of lubricant to the inlet passage at the port end of said passage substantially closely adjacent to the portion of said port which first opens whereby said lubricant becomes entrained in the high velocity of the working fluid as said fluid flows through said initial opening of the inlet port.
Claim 8
Dependent Claim
204 words
In a rotary mechanism having a rotor supported for rotation in a housing cavity and defining with the housing a plurality of working chambers which successively expand and contract in volumetric size as the rotor rotates and in which said housing has an inlet passage for supplying working fluid to the working chambers and terminating in a port which is opened and closed as the rotor rotates and with said inlet passage opening to a working chamber after said chamber starts to increase in volume and the pressure in said chamber is substantially less than the pressure in said inlet passage at the point where said passage is opened and closed whereby the initial portion of the working fluid entering a working chamber does so at a relatively high velocity; a lubricant metering system for supplying a small quantity of lubricant to the working chambers, said system comprising: means for supplying a small quantity of lubricant to the inlet passage at the port end of said passage substantially closely adjacent to the portion of said port which first opens whereby said lubricant becomes entrained in the high velocity of the working fluid as said fluid flows through said initial opening of the inlet port.
References Cited (Backward Citations)
US1834976A
Cited
US2153349A
Cited
US2241718A
Cited
US3044686A
Cited
US3213837A
Cited
US3811806A
Cited
US3814555A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |