US5179976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid coupling
Assignee: Eaton Aeroquip LLC
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Filing: 1991-12-23
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Granted: 1993-01-19
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Expires: 2011-12-23
Abstract
Abstract A fluid coupling is disclosed. The fluid coupling includes first and second coupling parts which define a passageway. A valve is provided in the passageway. The valve is adapted to open upon interconnection of the coupling parts. One of the coupling parts includes at least one guide groove, while the other coupling part includes at least one key pin receivable by the guide groove. The coupling parts can only be interconnected upon alignment of the key pin with the guide groove.
Inventors
- 👤 John D. Boland
- 👤 Paul J. Fournier
- 👤 John C. Field
- 👤 David S. Densel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:26
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/32; F16L37/34; F16L37/22; F16L37/23; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957; Y10T137/87973
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
125 words
A fluid coupling comprising, in combination, first and second coupling parts, each of said first and second coupling parts including a coupling connection end and a passageway, said first and second parts including a valve within the passageway adapted to open upon interconnection of said first and second coupling parts, said first coupling part comprising a male coupling part having a nose surface defining at least one guide groove, said second coupling part comprising a female coupling having at least one key pin extending inwardly and receivable by said guide groove, whereby said coupling parts can be interconnected upon alignment of said key pin with said guide groove and whereby said coupling parts cannot be interconnected without alignment of said key pin within guide groove.
Claim 2
Dependent Claim
125 words
A fluid coupling comprising, in combination, first and second coupling parts, each of said first and second coupling parts including a coupling connection end and a passageway, said first and second parts including a valve within the passageway adapted to open upon interconnection of said first and second coupling parts, said first coupling part comprising a male coupling part having a nose surface defining at least one guide groove, said second coupling part comprising a female coupling having at least one key pin extending inwardly and receivable by said guide groove, whereby said coupling parts can be interconnected upon alignment of said key pin with said guide groove and whereby said coupling parts cannot be interconnected without alignment of said key pin within guide groove.
Claim 3
Dependent Claim
49 words
A fluid coupling, according to claim 1, wherein said one of said first and second coupling parts includes a plurality of circumferentially spaced guide grooves and said other of said first and second coupling parts includes a plurality of key pins circumferentially positioned for reception by said guide grooves.
Claim 4
Dependent Claim
44 words
A fluid coupling, according to claim 1, wherein said one of said first and second coupling parts includes two spaced guide grooves and said other of said first and second coupling parts includes two key pins spaced for reception by said two guide grooves.
Claim 5
Dependent Claim
56 words
A fluid coupling, according to claim 1, wherein each of said key pins extends in a direction perpendicular to the longitudinal centerline of said other one of said first and second coupling parts and said guide grooves extend in a direction parallel to the longitudinal centerline of said one of said first and second coupling parts.
Claim 6
Dependent Claim
134 words
A fluid coupling comprising, in combination, male and female coupling parts, each of said male and female coupling parts including a coupling connection end and an axial passageway, said male and female parts including a valve within the passageway adapted to open upon interconnection of said male and female coupling parts, said male coupling part having a nose surface defining at least one guide groove, said female part defining a recessed opening at one end, including at least one key pin extending inwardly within such recessed opening and receivable by said guide groove, whereby said male and female coupling parts can be interconnected upon alignment of said key pin with said guide groove and whereby said male and female coupling parts cannot be interconnected without alignment of said key pin within said guide groove.
Claim 7
Dependent Claim
134 words
A fluid coupling comprising, in combination, male and female coupling parts, each of said male and female coupling parts including a coupling connection end and an axial passageway, said male and female parts including a valve within the passageway adapted to open upon interconnection of said male and female coupling parts, said male coupling part having a nose surface defining at least one guide groove, said female part defining a recessed opening at one end, including at least one key pin extending inwardly within such recessed opening and receivable by said guide groove, whereby said male and female coupling parts can be interconnected upon alignment of said key pin with said guide groove and whereby said male and female coupling parts cannot be interconnected without alignment of said key pin within said guide groove.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-01-19 | 1996-07-20 | 1997-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-01-19 | 2000-07-20 | 2001-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-01-19 | 2004-07-20 | 2005-01-19 | $7700.00 | Window Closed / Lapsed |