Patent US3581845A successfully refreshed from Google Patents.
US3581845A
Expired / Lapsed
US
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Air line oiler
Assignee: Ingersoll Rand Co
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Filing: 1969-03-07
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Granted: 1971-06-01
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Expires: 1989-03-07
Abstract
Abstract An air line oiler for injecting a slug of oil into an air line at the end of each pressure cycle and including a body containing air and oil ports, a combined piston and plunger and an oil chamber housing the plunger. At the start of the application of air pressure, the plunger draws oil into the chamber and thereafter pumps the oil into the air line when the air pressure is released.
Inventors
- 👤 Gerrit Van Nederynen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:30
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/30; Y; Y10; Y10S; Y10S173/00; Y10S173/03
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
129 words
An air line lubricator comprising: a body containing an air line port and a lubrication port, said air line port being adapted to be connected to an air line and said lubrication port being adapted to be connected to a supply of lubricant; a lubricant chamber in said body adapted to hold a measured amount of lubricant; a piston in said body movable in one direction in response to the application of pneumatic pressure to said air line port and operative, in moving in said one direction, to draw lubricant into said chamber; and means for moving said piston in a second direction in response to the release of said pneumatic pressure from said air line port to force the lubricant in said chamber through said air line port.
Claim 2
Dependent Claim
129 words
An air line lubricator comprising: a body containing an air line port and a lubrication port, said air line port being adapted to be connected to an air line and said lubrication port being adapted to be connected to a supply of lubricant; a lubricant chamber in said body adapted to hold a measured amount of lubricant; a piston in said body movable in one direction in response to the application of pneumatic pressure to said air line port and operative, in moving in said one direction, to draw lubricant into said chamber; and means for moving said piston in a second direction in response to the release of said pneumatic pressure from said air line port to force the lubricant in said chamber through said air line port.
Claim 3
Dependent Claim
32 words
The lubricator of claim 1 comprising: a plunger reciprocating in said chamber and connected to said piston to move in unison with it for forcing said lubricant through said air line port.
Claim 4
Dependent Claim
41 words
The lubricator of claim 3 wherein: said piston has an actuating surface adapted to receive pneumatic pressure for moving it in said one direction; and said piston also includes a longitudinal passage communicating said actuating surface with said air line port.
Claim 5
Dependent Claim
19 words
The lubricator of claim 3 wherein: said longitudinal passage also communicates said lubricant chamber with said air line port.
Claim 6
Dependent Claim
39 words
The lubricator of claim 4 including: a check valve located between said lubricant chamber and said longitudinal passage and operative to allow lubricant to enter said passage while preventing air pressure from flowing from said passage into said chamber.
Claim 7
Dependent Claim
29 words
The lubricator of claim 5 including: a spring urging said piston in said second direction to force lubricant through said air line port when the pneumatic pressure is released.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |