US4991883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connection apparatus
Assignee: Leco Corp
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Filing: 1989-09-25
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Granted: 1991-02-12
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Expires: 2009-09-25
Abstract
Abstract An apparatus for connecting first and second conduits having first and second bores, respectively, to provide communication between the first and second bores. The apparatus includes a base attached to the first conduit and a cap attached to the base. A follower is slidably disposed in the cap and is provided with a passageway, the second conduit extending through the passageway. A ferrule is received on the second conduit, the ferrule having a first end and a second end. The follower is biased against the first end of the ferrule. The first bore in the first conduit has a frustoconical surface which defines a receiving formation for the ferrule, the ferrule having a portion which is circular when viewed in transverse cross section. When the second end of the ferrule is urged in the receiving formation by the action of the biasing spring, the ferrule engages the frustoconical surface defining the receiving formation in substantially line contact.
Inventors
- 👤 Raymond D. Worden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:33
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/14; F16L37/142; F16L37/146; B; B01; B01J; B01J4/00; B01J4/001; C; C10; C10G; C10G9/00; C10G9/14; C10G9/18; C10G9/20; G; G01; G01N; G01N30/00; G01N30/02; G01N30/60; G01N30/6004; G01N30/6026; G01N30/6034
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
An apparatus for connecting a first conduit having a first bore to a second conduit having a second bore to provide communication between said first and second bores comprising: a base; means to attach said base to said first conduit; a cap, said second conduit extending through said cap; means to attach said cap to said base; a follower slidably disposed in said cap, said follower having a passageway therethrough, said second conduit extending through said passageway; a ferrule received on said second conduit, said ferrule having a first end and a second end; biasing means operative to urge said follower against said first end of said ferrule; said first bore in said first conduit having a frustoconical surface defining receiving formation for said ferrule, said ferrule second end of said having a portion which is circular when viewed in transverse cross section such that when said second end of said ferrule is urged into said receiving formation by said biasing means, said ferrule engages said frustoconical surface defining said receiving formation in substantially line contact.
Claim 2
Independent Claim
176 words
An apparatus for connecting a first conduit having a first bore to a second conduit having a second bore to provide communication between said first and second bores comprising: a base; means to attach said base to said first conduit; a cap, said second conduit extending through said cap; means to attach said cap to said base; a follower slidably disposed in said cap, said follower having a passageway therethrough, said second conduit extending through said passageway; a ferrule received on said second conduit, said ferrule having a first end and a second end; biasing means operative to urge said follower against said first end of said ferrule; said first bore in said first conduit having a frustoconical surface defining receiving formation for said ferrule, said ferrule second end of said having a portion which is circular when viewed in transverse cross section such that when said second end of said ferrule is urged into said receiving formation by said biasing means, said ferrule engages said frustoconical surface defining said receiving formation in substantially line contact.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein said second conduit comprises a quartz capillary tube.
Claim 4
Dependent Claim
14 words
The apparatus of claim 1 wherein said first conduit comprises a fused quartz member.
Claim 5
Dependent Claim
20 words
The apparatus of claim 1 wherein said means to attach said base to said first conduit comprise a bayonet mount.
Claim 6
Dependent Claim
14 words
The apparatus of claim 1 wherein said cap is threadedly attached to said base.
Claim 7
Dependent Claim
23 words
The apparatus of claim 1 wherein said base includes stop means to limit the movement of said follower away from said biasing means.
Claim 8
Dependent Claim
33 words
The apparatus of claim 1 wherein said biasing means comprises a fused quartz spring, the spring being disposed interiorly of said cap between a stop wall formed on said cap and said follower.
Claim 9
Dependent Claim
16 words
The apparatus of claim 1 wherein said ferrule is comprised of a heat resistant, deformable material.
Claim 10
Dependent Claim
56 words
The apparatus of claim 1 wherein said ferrule has a frustoconical portion and a cylindrical portion, said cylindrical portion defining said second end of said ferrule, said cylindrical portion of said ferrule engaging said frustoconical surface of said receiving formation to thereby space said frustoconical portion of said ferrule from said surface defining said receiving formation.
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) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |