US3901538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick-connect coupling
Assignee: Olin Corp
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Filing: 1974-02-13
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Granted: 1975-08-26
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Expires: 1994-02-13
Abstract
Abstract The invention relates to a quick-connect coupling for use with a conventional threaded male coupling member in which a female coupling member is provided of such design that the male member may be inserted and locked without moving or rotating the female member. An inwardly sprung, resilient snap ring is situated within a tubular shell member and is provided with internal threads for engaging and holding the male member in position. The shell is contoured to hold the snap ring in locking engagement with the male member in the event that force is applied to the coupling to pull it apart.
Inventors
- 👤 Stephen W Blakely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/1215
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
145 words
A quick-connect coupling device comprising a female coupling member adapted for use with a conventional threaded male coupling member, said female member comprising: A. a tubular shell member for receiving said male member comprising a shank portion, a first enlarged portion, a larger main portion, and a mouth portion; B. a sealing means housed within said first enlarged portion; C. an inwardly sprung snap ring located within said main portion adjacent said sealing means possessing internal threads adapted for engaging and holding said male member; D. a locking means located in said main portion which contacts and forces said snap ring radially inward into locking engagement with said male member when removal without release is attempted; and E. biasing means annularly displaced from said locking means for releasing said male member from engagement by forcing said snap ring to expand radially out of contact therewith.
Claim 2
Dependent Claim
145 words
A quick-connect coupling device comprising a female coupling member adapted for use with a conventional threaded male coupling member, said female member comprising: A. a tubular shell member for receiving said male member comprising a shank portion, a first enlarged portion, a larger main portion, and a mouth portion; B. a sealing means housed within said first enlarged portion; C. an inwardly sprung snap ring located within said main portion adjacent said sealing means possessing internal threads adapted for engaging and holding said male member; D. a locking means located in said main portion which contacts and forces said snap ring radially inward into locking engagement with said male member when removal without release is attempted; and E. biasing means annularly displaced from said locking means for releasing said male member from engagement by forcing said snap ring to expand radially out of contact therewith.
Claim 3
Dependent Claim
14 words
The device of claim 1 wherein said shell member possesses a threaded shank portion.
Claim 4
Dependent Claim
18 words
The device of claim 1 wherein said snap ring possesses a longitudinal split to define an expansion section.
Claim 5
Dependent Claim
15 words
The device of claim 3 wherein said expansion section is defined by parallel tapered surfaces.
Claim 6
Dependent Claim
21 words
The device of claim 1 wherein said sealing means comprises a hollow gasket portion and a frustoconical lip member extending therefrom.
Claim 7
Dependent Claim
107 words
The device in claim 1 wherein, said snap ring possesses a plurality of nodular extensions which longitudinally project toward said biasing means, said locking means comprises a plurality of inwardly extending cam members defined by equally spaced indentations of said mouth portion lying between saId nodular extensions, and said biasing means comprises a sleeve member in sliding relationship with the outer surface of said main portion which possesses an inwardly directed end portion which extends into said main portion whereby, when said sleeve member is slidably moved away from said male member, said end portion engages said nodular extensions so as to radially expand said snap ring.
Claim 8
Dependent Claim
14 words
The device of claim 6 wherein said shell member possesses a threaded shank portion.
Claim 9
Dependent Claim
18 words
The device of claim 6 wherein said snap ring possesses a longitudinal split to define an expansion section.
Claim 10
Dependent Claim
15 words
The device of claim 8 wherein said expansion section is defined by parallel tapered surfaces.
Claim 11
Dependent Claim
21 words
The device of claim 6 wherein said sealing means comprises a hollow gasket portion and a frustoconical lip member extending therefrom.
Claim 12
Dependent Claim
111 words
The device of claim 1 wherein, said snap ring possesses two outwardly projecting, laterally opposed tab members which extend longitudinally along the outside of said shell member, said locking means comprises a continuous inwardly funneled surface which is interrupted at two diametrically opposed points to provide passage ways for said tab members, and said biasing means comprises two tapered surfaces located on the distal end portions of said tab members in slidable relation to the outer surface of said main portion whereby, when said distal end portions are depressed against said shell member, said surfaces slide across outer surface and cause said tab members to pull said snap ring radially outward.
Claim 13
Dependent Claim
14 words
The device of claim 11 wherein said shell member possesses a threaded shank portion.
Claim 14
Dependent Claim
18 words
The device of claim 11 wherein said snap ring possesses a longitudinal split to define an expansion section.
Claim 15
Dependent Claim
15 words
The device of claim 13 wherein said expansion section is defined by parallel tapered surfaces.
Claim 16
Dependent Claim
21 words
The device of claim 11 wherein said sealing means comprises a hollow gasket portion and a frustoconical lip member extending therefrom.
Claim 17
Dependent Claim
32 words
The device of claim 5 wherein said lip member extends within the inner surface of said male member and expands thereagainst in response to internal fluid pressure to provide a leak-proof seal.
Claim 18
Dependent Claim
32 words
The device of claim 10 wherein said lip member extends within the inner surface of said male member and expands thereagainst in response to internal fluid pressure to provide a leak-proof seal.
Claim 19
Dependent Claim
32 words
The device of claim 15 wherein said lip member extends within the inner surface of said male member and expands thereagainst in response to internal fluid pressure to provide a leak-proof seal.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |