Patent US5521331A successfully refreshed from Google Patents.
US5521331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielded electric cable
Assignee: Corning Research and Development Corp
•
Filing: 1995-05-04
•
Granted: 1996-05-28
•
Expires: 2015-05-04
Abstract
Abstract A shielded electric cable having a core including an insulated conductor. A first shielding member formed of an elongated ribbon of insulating material and a pair of elongated metal foil strips arranged in a parallel relationship with the ribbon and bonded to the opposite sides of the ribbon is applied longitudinally to the core and wrapped circumferentially therearound forming two concentric substantially closed shielded layers. A layer of plastic material, preferably foamed, surrounds the first shielding member and a second shielding member surrounds the plastic layer, the second shielding member being formed of non-braided metallic material. The layer of plastic material is bonded to the shielding members. The shielded electric cable is provided with an outer jacket of non-conducting material and having an appropriate O.D. for receiving a standard connector.
Inventors
- 👤 Ralph D. Hillburn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:06
CPC Classifications
H; H01; H01B; H01B11/00; H01B11/18; H01B11/1808; H01B11/1826; H01B11/20; H01B11/206; H01R; H01R9/00; H01R9/03; H01R9/05; H01R9/0518; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49123; Y10T29/49174; Y10T29/49181; Y10T29/49185
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
101 words
A shielded electric cable of predetermined diameter for assembly with a standard connector comprising a core comprising an insulated conductor, a first shielding member applied longitudinally to the core and wrapped circumferentially around the core to form a substantially closed shield, a layer of plastic material of predetermined thickness surrounding said first shielding member, and a second shielding member surrounding said layer of plastic material, said first and second shielding members being bonded to said layer of plastic material, said first and second shielding members being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector.
Claim 2
Dependent Claim
101 words
A shielded electric cable of predetermined diameter for assembly with a standard connector comprising a core comprising an insulated conductor, a first shielding member applied longitudinally to the core and wrapped circumferentially around the core to form a substantially closed shield, a layer of plastic material of predetermined thickness surrounding said first shielding member, and a second shielding member surrounding said layer of plastic material, said first and second shielding members being bonded to said layer of plastic material, said first and second shielding members being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector.
Claim 3
Dependent Claim
72 words
A shielded electric cable according to claim 1 wherein said first shielding member comprises an elongated ribbon of insulating material and a pair of elongated metallic foil strips arranged in a parallel relationship with the ribbon and bonded to opposite sides of the ribbon, the first shielding member being applied longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship forming two concentric substantially closed shielding layers.
Claim 4
Dependent Claim
60 words
A shielded electric cable according to claim 2, wherein each of said shielding layers is formed by a respective one of the foil strips with the longitudinal edge of one of the foil strips forming the inner shielding layer overlapping the opposite longitudinal edge of the foil strip forming the outer shielding layer to provide direct contact with each other.
Claim 5
Dependent Claim
62 words
A shielded electric cable according to claim 2, wherein each of said shielding layers is formed by a respective one of the foil strips with the longitudinal edges of the foil strip forming the inner shielding layer meeting to form a butt joint and the longitudinal edges of the foil strip forming the outer shielding layer meeting to form a butt joint.
Claim 6
Dependent Claim
15 words
A shielded electric cable according to claim 1 including an outer jacket of non-conductive material.
Claim 7
Dependent Claim
19 words
A shielded electric cable according to claim 5 wherein said second shielding member is bonded to said outer jacket.
Claim 8
Dependent Claim
58 words
A shielded electric cable according to claim 1 wherein said second shielding member comprises at least one layer of an elongated metallic foil strip applied longitudinally to the core and wrapped circumferentially around the layer of plastic material with one of the longitudinal edges of the metallic strip engaging the opposite longitudinal edge to form a longitudinal joint.
Claim 9
Dependent Claim
106 words
A shielded electric cable according to claim 1 wherein said second shielding member comprises a tape comprising an elongated ribbon of insulating material, and a pair of elongated metal foil strips arranged in parallel relationship with the ribbon and bonded to opposite sides of the ribbon, said tape being applied longitudinally to the core and wrapped circumferentially around the layer of plastic material with one of the longitudinal edges of the tape bent back on itself and the opposite longitudinal edge bent inwardly on itself to form opposing longitudinal grooves with the opposing edges being received respectively in the opposing grooves to form a longitudinal joint.
Claim 10
Dependent Claim
17 words
A shielded electric cable according to claim 1 wherein said second shielding member comprises a metal tube.
Claim 11
Dependent Claim
16 words
A shielded electric cable according to claim 1 wherein said layer of plastic is foam material.
Claim 12
Dependent Claim
15 words
A shielded electric cable according to claim 1 wherein said layer of plastic is conductive.
Claim 13
Dependent Claim
15 words
A shielded electric cable according to claim 1 wherein said layer of plastic is semi-conductive.
Claim 14
Dependent Claim
15 words
A shielded electric cable according to claim 1 wherein said layer of plastic is non-conductive.
Claim 15
Dependent Claim
16 words
A shielded electric cable according to claim 1 wherein said layer of plastic comprises polyvinyl chloride.
Claim 16
Dependent Claim
15 words
A shielded electric cable according to claim 1 wherein said layer of plastic comprises polyethylene.
Claim 17
Dependent Claim
16 words
A shielded electric cable according to claim 1 wherein said layer of plastic comprises thermoplastic rubber.
Claim 18
Dependent Claim
31 words
A shielded electric cable according to claim 1 wherein said layer of plastic includes a heat activated adhesive for bonding said layer of plastic to said first and second shielding members.
Claim 19
Independent Claim
135 words
A method of making a shielded electric cable of predetermined diameter for assembly with a standard connector, said cable having a core comprising an insulated conductor including the steps of applying a first shielding member longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship to form a substantially closed shield, applying a layer of plastic material of predetermined thickness surrounding the first shielding member, applying a second shielding member surrounding the layer of plastic material, bonding said layer of plastic material to said first and second shielding members, the first and second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector, and applying an outer jacket of non-conductive material to the second shielding member to complete the shielded electric cable.
Claim 20
Independent Claim
135 words
A method of making a shielded electric cable of predetermined diameter for assembly with a standard connector, said cable having a core comprising an insulated conductor including the steps of applying a first shielding member longitudinally to the core and wrapped circumferentially around the core in a generally parallel relationship to form a substantially closed shield, applying a layer of plastic material of predetermined thickness surrounding the first shielding member, applying a second shielding member surrounding the layer of plastic material, bonding said layer of plastic material to said first and second shielding members, the first and second shielding member being formed of non-braided metallic material to facilitate assembly of the cable with a standard connector, and applying an outer jacket of non-conductive material to the second shielding member to complete the shielded electric cable.
Claim 21
Dependent Claim
20 words
The method of claim 18 wherein the layer of plastic material is applied to the first shielding member by extrusion.
Claim 22
Dependent Claim
30 words
The method of claim 18 wherein the layer of plastic material is applied to the first shielding member by wrapping a tape of plastic material around the first shielding member.
Claim 23
Dependent Claim
24 words
The method of claim 18 wherein the outer jacket of insulating material is applied by extruding the outer jacket on the second shielding member.
Claim 24
Dependent Claim
31 words
The method of claim 18 wherein said second shielding member is formed from metal tubing which has been drawn down to fit the outside diameter of the layer of plastic material.
Claim 25
Dependent Claim
38 words
The method of claim 18 wherein the layer of plastic material is in the form of a tape of foam material pulled longitudinally of the cable and applied to the first shielding member by wrapping the tape therearound.
Claim 26
Dependent Claim
15 words
The method of claim 18 wherein said layer of plastic material is a foam material.
Claim 27
Dependent Claim
13 words
The method of claim 18 wherein said layer of plastic material is non-conductive.
Claim 28
Dependent Claim
12 words
The method of claim 18 wherein said layer of plastic is semi-conductive.
Claim 29
Dependent Claim
12 words
The method of claim 18 wherein said layer of plastic is conductive.
Claim 30
Dependent Claim
46 words
The method of claim 18 wherein said layer of plastic material includes a heat activated adhesive for bonding said layer of plastic material to said first and second shielding members, the adhesive being heat activated during extrusion of the outer jacket on the second shielding member.
Claim 31
Dependent Claim
16 words
The method of claim 28 wherein said outer jacket is bonded to said second shielding member.
Claim 32
Dependent Claim
141 words
A method of assembling the shielded electric cable of claim 1 with a connector wherein the connector comprises a central connector post surrounded by a crimp ring and a connector nut, said method comprising the steps of: aligning the longitudinal axis of the connector with the longitudinal axis of the shielded electric cable, placing the end of the connector post in abutting relation with the adjacent end of the plastic layer of material in the shielded electric cable, and applying a longitudinal force to the cable and connector to cause the plastic layer to be pushed back beneath the second shielding member whereby the bonds between the plastic layer and the shielding members are broken so that the connector post will make metal-to-metal contact between the first shielding member and the second shielding member after the installation of the electrical connector.
References Cited (Backward Citations)
US3051771A
Cited
US3193712A
Cited
US3439111A
Cited
US3484532A
Cited
US3459866A
Cited
US3507978A
Cited
US3927247A
Cited
US4092452A
Cited
US3624267A
Cited
US3662090A
Cited
US3971871A
Cited
US4125739A
Cited
US4117260A
Cited
USRE31277E
Cited
US4297522A
Cited
US4408089A
Cited
US4323721A
Cited
US4327246A
Cited
US4374299A
Cited
US4376920A
Cited
US4406914A
Cited
US4439633A
Cited
US4487996A
Cited
US4513170A
Cited
US4510346A
Cited
US4641110A
Cited
US4871883A
Cited
US4698028A
Cited
US4912283A
Cited
US5006670A
Cited
US5216202A
Cited
US5107076A
Cited
US5132491A
Cited
US5170010A
Cited
US5216204A
Cited
US5210377A
Cited
US5321202A
Cited
US5414213A
Cited
US5389736A
Cited
US5434354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |