US4016896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the de-airing of a liquid system, preferably a system for hydraulic brakes
Assignee: Individual
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Filing: 1975-11-07
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Granted: 1977-04-12
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Expires: 1995-11-07
Abstract
Abstract The present invention relates to a device for the de-airing of a system for hydraulic brakes. The device includes a pumping device continuously creating a vacuum and arranged to be connected via ducts to the de-airing nipples of the system. A connecting piece is provided for said connection and is adapted to be tightly fit to said nipples and to engage said nipples so that they can be turned.
Inventors
- 👤 Eino Heikki Oikarinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:24
CPC Classifications
B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/221; B60T17/222; F; F16; F16L; F16L55/00; F16L55/07; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3109; Y10T137/598; Y10T137/612; Y10T137/613; Y10T137/6133
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
107 words
A device for de-airing a liquid system having de-airing nipples designed as valves which when turned will open, said device comprising: a pumping device adapted to exclusively create a continuous vacuum; at least one duct connected to said pumping device and having one end to be connected to one of the de-airing nipples; a connecting piece mounted on said one end of said duct; turning means associated with said connecting piece for engagement with the respective de-airing nipple when the latter is connected to said duct to thereby open the valve; and vacuum-influenced tightening means for tightening the connection between said duct and the respective de-airing nipple.
Claim 2
Independent Claim
107 words
A device for de-airing a liquid system having de-airing nipples designed as valves which when turned will open, said device comprising: a pumping device adapted to exclusively create a continuous vacuum; at least one duct connected to said pumping device and having one end to be connected to one of the de-airing nipples; a connecting piece mounted on said one end of said duct; turning means associated with said connecting piece for engagement with the respective de-airing nipple when the latter is connected to said duct to thereby open the valve; and vacuum-influenced tightening means for tightening the connection between said duct and the respective de-airing nipple.
Claim 3
Dependent Claim
21 words
A device according to claim 1, wherein the pumping device is an ejector pump adapted to be driven by compressed air.
Claim 4
Dependent Claim
61 words
A device according to claim 1, wherein said connecting piece comprises a shaft portion connected to said duct and provided with a first channel communicating with said duct, and a tool portion turnably connected to said shaft portion and comprising said turning means, said tightening means, and a second channel maintaining a communication between said first channel and the de-airing nipple.
Claim 5
Dependent Claim
35 words
A device according to claim 1, wherein said tightening means comprises a resilient bushing adapted to be sealingly pressed onto the de-airing nipple and to keep the connecting piece in place fitted to the nipple.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |