US3816040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air starter and lubricator throttle valve therefor
Assignee: SYCON Corp A CORP OF
•
Filing: 1972-11-09
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Granted: 1974-06-11
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Expires: 1992-11-09
Abstract
Abstract There is disclosed an air starter having an air motor with an inlet valve which throttles the initial pressure build-up downstream of the valve to reduce the initial shock imposed on the starter mechanism. The throttling valve has a chamber in which a trapped lubricant is positioned at the beginning of each starter operation. The trapped lubricant escapes from the chamber through an orifice to regulate the rate of opening movement of the valve and sprays the lubricant into the incoming main stream in a direction opposite to the direction of the incoming air flow to mix the lubricant uniformly with the incoming air.
Inventors
- 👤 L Janik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
F; F01; F01M; F01M5/00; F01M5/02; F02; F02N; F02N7/00; F02N7/08; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/785; Y10T137/7851
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
137 words
An air starter including an air motor having an inlet suited for receiving air from a source of high pressure air to power the air motor, a valve interposed between said air source and said inlet for controlling the delivery of air to power the air motor, means for subjecting said valve to incoming air pressure to open said valve to permit the entry of pressurized air into said motor, a chamber associated with said valve, means for automatically entrapping a fluid in said chamber during the opening movement of said valve, and means for controlling the discharge of said fluid from said chamber during such opening movement to regulate the rate of opening movement of said valve to throttle the initial pressure build-up downstream of the valve to reduce the initial shock imposed on the starter.
Claim 2
Dependent Claim
137 words
An air starter including an air motor having an inlet suited for receiving air from a source of high pressure air to power the air motor, a valve interposed between said air source and said inlet for controlling the delivery of air to power the air motor, means for subjecting said valve to incoming air pressure to open said valve to permit the entry of pressurized air into said motor, a chamber associated with said valve, means for automatically entrapping a fluid in said chamber during the opening movement of said valve, and means for controlling the discharge of said fluid from said chamber during such opening movement to regulate the rate of opening movement of said valve to throttle the initial pressure build-up downstream of the valve to reduce the initial shock imposed on the starter.
Claim 3
Dependent Claim
12 words
The device of claim 1 wherein said fluid is an incompressible lubricant.
Claim 4
Dependent Claim
36 words
The device of claim 1 wherein an axial recess in said valve provides said fluid chamber and a mating aligned projection enters said recess during the opening movement of said valve to entrap the fluid therein.
Claim 5
Dependent Claim
38 words
The device of claim 3 wherein said projection is provided with a clearance with the walls of said fluid chamber to provide for the flow of lubricant into said chamber as the valve returns to the valve seat.
Claim 6
Dependent Claim
45 words
The device of claim 3 including a valve return spring for returning the valve to its seated position at the end of each starter operation, and means for automatically filling said fluid chamber when the valve is returned to its seat after each starter operation.
Claim 7
Dependent Claim
23 words
The device of claim 5 including a one-way valve for closing the orifice during the return of the valve toward its valve seat.
Claim 8
Dependent Claim
30 words
The device of claim 1 wherein an orifice in said valve provides for the controlled leakage of fluid from said chamber into the incoming air stream flowing through the valve.
Claim 9
Dependent Claim
48 words
The device of claim 7 wherein the orifice communicates with the air inlet upstream of the valve to discharge the entrapped fluid into the incoming air stream in a direction opposite the direction of flow of incoming air to atomize and mix the fluid with the incoming air.
References Cited (Backward Citations)
US2232620A
Cited
US2941629A
Cited
US3099282A
Cited
US3299781A
Cited
US3516516A
Cited
US3731763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |