US3604534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic metered, pulsing lubrication system
Assignee: Hardinge Inc
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Filing: 1969-09-26
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Granted: 1971-09-14
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Expires: 1989-09-26
Abstract
Abstract An automatic metered, pulsing lubrication system for a pneumatic piston and cylinder device including an adjustable metering valve operative in response to momentary pressure changes in the air lines to inject a metered quantity of lubricant in the air line, the lubricant being carried to the cylinder by the airstream through the air line. The system may be utilized to lubricate the piston and cylinder on each stroke of the piston, or on every other stroke of the piston.
Inventors
- 👤 Jack L Whitaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
A lubricating system for a pneumatic piston and cylinder device including: a. a piston and cylinder means, b. an air pressure source, c. a reservoir, d. a lubricant in said reservoir, e. an airspace above said lubricant, in said reservoir, f. an air pressure line connecting said air pressure source with said airspace and said piston and cylinder means, g. valve means in said air pressure line, h. a lubricant line having first and second portions and passing from said reservoir into said air pressure line and having said second portion coaxial and concentrically positioned within a portion of said air pressure line and extending in a direction towards at least one of said means and having its end closely adjacent at least one of said means, i. an adjustable metering valve in said lubricant line, and j. said metering valve being positioned between said reservoir and said air pressure line and mounted in said first portion of said lubricant line.
Claim 2
Dependent Claim
161 words
A lubricating system for a pneumatic piston and cylinder device including: a. a piston and cylinder means, b. an air pressure source, c. a reservoir, d. a lubricant in said reservoir, e. an airspace above said lubricant, in said reservoir, f. an air pressure line connecting said air pressure source with said airspace and said piston and cylinder means, g. valve means in said air pressure line, h. a lubricant line having first and second portions and passing from said reservoir into said air pressure line and having said second portion coaxial and concentrically positioned within a portion of said air pressure line and extending in a direction towards at least one of said means and having its end closely adjacent at least one of said means, i. an adjustable metering valve in said lubricant line, and j. said metering valve being positioned between said reservoir and said air pressure line and mounted in said first portion of said lubricant line.
Claim 3
Dependent Claim
28 words
A lubricating system as in claim 1 and wherein: a. said lubricant line extends in a direction toward said valve means and terminates closely adjacent said valve means.
Claim 4
Dependent Claim
31 words
A lubricating system as in claim 2 and wherein: a. said air pressure source supplies continuous pressure on said lubricant in said reservoir and on said lubricant in said lubricant line.
Claim 5
Dependent Claim
17 words
A lubricating system as in claim 3 and including: a. check valve means in said lubricant line.
Claim 6
Dependent Claim
32 words
A lubricating system as in claim 1 and wherein: a. said lubricant line extends in a direction toward said piston and cylinder means and terminates closely adjacent said piston and cylinder means.
Claim 7
Dependent Claim
37 words
A lubricating system as in claim 4 and including: a. an additional air pressure line communicating with said air pressure source with said piston and cylinder means, b. additional valve means in said additional air pressure line.
Claim 8
Dependent Claim
44 words
A lubricating system as in claim 6 and wherein: a. the length of said air pressure line between said valve means and said piston and cylinder means is greater than the length of said air pressure line between said valve means and said airspace.
References Cited (Backward Citations)
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Cited
US2869514A
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US3076525A
Cited
US3112013A
Cited
US3297106A
Cited
US3432004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |