US3836700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit coupling
Assignee: MacLean Fogg Co
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Filing: 1973-12-06
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Granted: 1974-09-17
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Expires: 1993-12-06
Abstract
Abstract A coupling connection is disclosed for providing a fluid tight seal, electrical continuity and restraint against axial separation between a metal coupling body and tubular plastic telephone wire conduit, the inner surface of which conduit is lined with an electrically conductive metal foil and a covering film of plastic. During assembly of the coupling connection, the coupling components cooperate to axially displace and radially deform the plastic conduit to establish areas of sealing engagement therebetween. The radial deformation provides an interengaging relationship between the conduit and coupling components to restrain axial separation of the conduit from the coupling body, and cause penetration of the plastic film covering the conductive foil by one of the coupling components to establish electrical contact therebetween.
Inventors
- 👤 R Niemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
H; H01; H01R; H01R4/00; H01R4/24; H01R4/2495; H01R4/58; H01R4/64
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
341 words
A coupling connection between a body of electrically conductive metal and a conduit of non-metallic material, said conduit having annular inner and outer surfaces, a layer of electrically conductive material on said inner surface, a layer of penetratable insulating material on said conductive layer, said conductive layer being between said insulating layer and said inner surface, a sleeve having a bore with said conduit extending therethrough, said sleeve having a contractible end portion terminating in an end wall having a circumferential outer edge and a circumferential inner edge capable of deforming said conduit, said body having a chamber opening thereinto and including an annular wall having axial inner and outer ends and a shoulder at said inner end extending radially inwardly of said annular wall, a tubular insert of electrically conductive metal extending into said conduit, said insert having axial inner and outer ends and an annular outer surface engaging said layer of insulating material, a flange extending radially outwardly of said annular outer surface at said outer end of said insert axially positioning said insert in said conduit, said annular outer surface of said insert including a circumferential recess between said inner and outer ends thereof, said circumferential recess having axially spaced sidewalls intersecting said annular outer surface defining recess edges extending circumferentially of said insert, said conduit and insert being axially received in said body chamber with said outer end of said insert engaging said shoulder, said chamber including a cam wall extending radially and axially outwardly from said outer end of said annular chamber wall receiving the contractible end portion of said sleeve, forcing means engaging said sleeve axially outwardly of said end wall forcing the outer edge of said contractible end portion of said sleeve against the cam wall and camming the circumferential inner edge of said sleeve against the outer surface of said conduit, a portion of the material of said conduit, insulating layer and conductive layer extending radially into said circumferential recess, and said recess edges penetrating said insulating layer and contracting said conductive layer.
Claim 2
Dependent Claim
341 words
A coupling connection between a body of electrically conductive metal and a conduit of non-metallic material, said conduit having annular inner and outer surfaces, a layer of electrically conductive material on said inner surface, a layer of penetratable insulating material on said conductive layer, said conductive layer being between said insulating layer and said inner surface, a sleeve having a bore with said conduit extending therethrough, said sleeve having a contractible end portion terminating in an end wall having a circumferential outer edge and a circumferential inner edge capable of deforming said conduit, said body having a chamber opening thereinto and including an annular wall having axial inner and outer ends and a shoulder at said inner end extending radially inwardly of said annular wall, a tubular insert of electrically conductive metal extending into said conduit, said insert having axial inner and outer ends and an annular outer surface engaging said layer of insulating material, a flange extending radially outwardly of said annular outer surface at said outer end of said insert axially positioning said insert in said conduit, said annular outer surface of said insert including a circumferential recess between said inner and outer ends thereof, said circumferential recess having axially spaced sidewalls intersecting said annular outer surface defining recess edges extending circumferentially of said insert, said conduit and insert being axially received in said body chamber with said outer end of said insert engaging said shoulder, said chamber including a cam wall extending radially and axially outwardly from said outer end of said annular chamber wall receiving the contractible end portion of said sleeve, forcing means engaging said sleeve axially outwardly of said end wall forcing the outer edge of said contractible end portion of said sleeve against the cam wall and camming the circumferential inner edge of said sleeve against the outer surface of said conduit, a portion of the material of said conduit, insulating layer and conductive layer extending radially into said circumferential recess, and said recess edges penetrating said insulating layer and contracting said conductive layer.
Claim 3
Dependent Claim
47 words
The coupling connection according to claim 1, wherein said circumferential recess in said insert has a circumferential bottom wall parallel to the axis of the insert, said axially spaced sidewalls of said circumferential recess extending perpendicular to said bottom wall and annular outer surface of said insert.
Claim 4
Dependent Claim
25 words
The coupling connection according to claim 1, wherein said annular outer surface of said insert includes a tapered portion flaring the end of said conduit.
Claim 5
Dependent Claim
47 words
The coupling connection according to claim 3, wherein said circumferential recess in said insert has a circumferential bottom wall parallel to the axis of the insert, said axially spaced sidewalls of said circumferential recess extending perpendicular to said bottom wall and annular outer surface of said insert.
Claim 6
Dependent Claim
45 words
The coupling connection according to claim 3, wherein said circumferential inner edge of said sleeve has an annular recess having an axially extending circumferential wall intersecting said end wall and a radially inwardly extending wall intersecting tHe inner surface of the bore in said sleeve.
Claim 7
Dependent Claim
47 words
The coupling connection according to claim 5, wherein said circumferential recess in said insert has a circumferential bottom wall parallel to the axis of the insert, said axially spaced sidewalls of said circumferential recess extending perpendicular to said bottom wall and annular outer surface of said insert.
Claim 8
Dependent Claim
45 words
The coupling connection according to claim 1, wherein said circumferential inner edge of said sleeve has an annular recess having an axially extending circumferential wall intersecting said end wall and a radially inwardly extending wall intersecting the inner surface of the bore in said sleeve.
Claim 9
Dependent Claim
46 words
The coupling connection according to claim 7, wherein said circumferential recess in said insert has a circumferential bottom wall parallel to axis of the insert, said axially spaced sidewalls of said circumferential recess extending perpendicular to said bottom wall and annular outer surface of said insert.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |