Patent US4915420A successfully refreshed from Google Patents.
US4915420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connector for connecting pipe
Assignee: Usui Kokusai Sangyo Kaisha Ltd
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Filing: 1989-03-03
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Granted: 1990-04-10
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Expires: 2009-03-03
Abstract
Abstract A connector for connecting a pipe includes a joint body internally formed with stepped small and large diameter chambers, sealing members attached to inside of the small diameter chamber, a bush for sustaining the sealing members, and a holder having pawls engaging with a pipe annular swelling portion when the pipe has completely been connected. The connector also includes a connection confirmative member caught by the holder and having a pawl impinging upon the swelling portion. The confirmative member disengages from the holder when the pipe has completely been connected.
Inventors
- 👤 Katsushi Washizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:06
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/08; F16L37/00; F16L37/08; F16L37/084; F16L37/098; F16L37/0985; F16L37/12; F16L2201/00; F16L2201/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
191 words
A connector for connecting a pipe having an annular swelling adjacent an end thereof to a hose, comprising: a joint body having opposed first and second ends and an axial core interior extending therebetween, said axial core interior being formed with a stepped small diameter chamber communicating with a communication passageway of a hose connecting portion provided on the first end of said joint body, and with a stepped enlarged diameter installing chamber disposed behind said small diameter chamber at the second end of the joint body; sealing members attached to the inside of the small diameter chamber; a bush member, accommodated intermediate said sealing members and the second end of the joint body; and a holder having pawls engaging with the pipe annular swelling portion when said pipe has completely been connected and having means for engaging the holder in the axial core of the joint body, characterized by a connection confirmative member caught by said holder and including at least a single piece of pawl capable of impinging upon said pipe annular swelling portion, said connection confirmative member disengaging from said holder when said pipe has completely been connected.
Claim 2
Dependent Claim
191 words
A connector for connecting a pipe having an annular swelling adjacent an end thereof to a hose, comprising: a joint body having opposed first and second ends and an axial core interior extending therebetween, said axial core interior being formed with a stepped small diameter chamber communicating with a communication passageway of a hose connecting portion provided on the first end of said joint body, and with a stepped enlarged diameter installing chamber disposed behind said small diameter chamber at the second end of the joint body; sealing members attached to the inside of the small diameter chamber; a bush member, accommodated intermediate said sealing members and the second end of the joint body; and a holder having pawls engaging with the pipe annular swelling portion when said pipe has completely been connected and having means for engaging the holder in the axial core of the joint body, characterized by a connection confirmative member caught by said holder and including at least a single piece of pawl capable of impinging upon said pipe annular swelling portion, said connection confirmative member disengaging from said holder when said pipe has completely been connected.
Claim 3
Dependent Claim
43 words
The connector as set forth in claim 1, wherein said connection confirmative member comprises a slender member projecting from the pawl of the connection confirmative member a sufficient distance such that said slender member projects beyond the second end of said joint body.
Claim 4
Dependent Claim
19 words
The connector as set forth in claim 2, wherein said connection confirmative member further includes a handle jetting out.
Claim 5
Dependent Claim
37 words
The connector as set forth in claim 1, wherein said connection confirmative member consists of a pair of pawl pieces disposed in generally opposed relationship with each other and an annular member for connecting said pawl pieces.
Claim 6
Dependent Claim
35 words
The connector as set forth in claim 4, wherein said annular member is partly formed with a notch for permitting expansion of the annular member for disengagement of the connection confirmative member from the pipe.
Claim 7
Dependent Claim
29 words
The connector as set forth in claim 4, wherein said annular member is made thick to contact its inner peripheral surface with the outer peripheral surface of said pipe.
Claim 8
Dependent Claim
89 words
The connector as set forth in claim 1, wherein said holder has a tabular member generally at one axial end thereof, and said pawl of said connection confirmative member being composed of a first oblique surface facing the second end of the joint body and a second oblique surface facing away from the second end of the joint body, said second oblique surface being chased with a groove formed in the radial direction, for engaging with said tabular member prior to complete connection of the pipe with the connector.
Claim 9
Dependent Claim
105 words
The connector as set forth in claim 1, wherein said holder includes a tabular member generally at one axial end thereof formed with notched grooves in its outer peripheral portion, and said pawl unit of said connection confirmative member consists of a first oblique surface facing the second end of the joint body and a second oblique surface facing away from the second end of the joint body, said second oblique surface being chased with a pair of stopping grooves, formed in the peripheral directions, for engaging with said notched grooves of said tabular member prior to complete connection of the pipe with the connector.
Claim 10
Dependent Claim
19 words
The connector as set forth in claim 1, wherein a spacer is interposed between said plurality of sealing members.
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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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |