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US3721749A Expired / Lapsed US ⏱️ 0.0 years remaining

Heat recoverable articles

Assignee: Raychem Corp
•
Filing: 1970-11-16
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Granted: 1973-03-20
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Expires: 1990-11-16
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Abstract

Abstract Described herein are means for simultaneously connecting multiconductor flat cable to other such cable or to terminals of connector blocks or the like while providing for electrical insulation and environmental isolation of the resulting connections. The connection means comprise an open-ended hollow heat recoverable member having a train of longitudinal seams disposed across the width thereof integrally bonding the opposed walls thereof to one another to define and integrally connect a plurality of spaced parallel tubular members sized to receive individual conductors of the cable whereupon, in operation, the tubular members are heat recovered therearound. A soldered joint is formed between individual conductors of the cable and conductors or terminals of the device to which the cable is to be connected within said tubular members which serve to electrically insulate one connection from adjacent connections. Solder inserts may be positioned within the tubular members so that upon heat recovery of the connection device the solder fuses to form a permanent connection while simultaneously the connection device heat shrinks to isolate and insulate the formed connections. Fusible rings of polymeric material may be positioned within the tubular members to form solder dams. The heat recoverable connection device is preferably transparent to permit inspection of the formed connections.

Inventors

  • 👤 R Clabburn

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:15
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/0616; H; H01; H01R; H01R4/00; H01R4/70; H01R4/72; H01R4/723; B29K; B29K2995/00; B29K2995/0018; B29K2995/0026; Y; Y10; Y10S; Y10S174/00; Y10S174/08

Claims Analysis

Total Claims: 15
Claim 1
Independent Claim 105 words
An open-ended heat recoverable article suitable for electrical connection of multi-conductor flat cable comprising a hollow heat-shrinkable polymeric member heat recoverable to a flat configuration and having a train of longitudinal seams disposed across the width thereof integrally bonding the opposed walls thereof to one another to define and integrally connect along their length a plurality of spaced parallel tubular members sized to receive individual conductors of said cable, the spacing between the longitudinal axes of said tubular members being approximately equal to that between conductors of said cable whereupon, in operation, said tubular members are heat recovered therearound while maintaining the center-to-center distance therebetween.
Claim 2
Dependent Claim 105 words
An open-ended heat recoverable article suitable for electrical connection of multi-conductor flat cable comprising a hollow heat-shrinkable polymeric member heat recoverable to a flat configuration and having a train of longitudinal seams disposed across the width thereof integrally bonding the opposed walls thereof to one another to define and integrally connect along their length a plurality of spaced parallel tubular members sized to receive individual conductors of said cable, the spacing between the longitudinal axes of said tubular members being approximately equal to that between conductors of said cable whereupon, in operation, said tubular members are heat recovered therearound while maintaining the center-to-center distance therebetween.
Claim 3
Dependent Claim 29 words
An article according to claim 1 wherein the said opposed walls are respectively defined by first and second plies integrally bonded to one another along the lateral edges thereof.
Claim 4
Dependent Claim 35 words
An article according to claim 1 wherein the said opposed walls are presented by the interior walls of a ply whose lateral edges have been brought into adjacency and integrally bonded one to the other.
Claim 5
Dependent Claim 28 words
An article according to claim 1 which additionally comprises a fusible solder insert firmly held in each of said tubular members in abutting relation to the walls thereof.
Claim 6
Dependent Claim 29 words
An article according to claim 4 which additionally comprises a fusible ring of polymeric material held in each of said tubular members in abutting relation to the walls thereof.
Claim 7
Dependent Claim 29 words
An article according to claim 1 which additionally comprises a fusible ring of polymeric material held in each of said tubular members in abutting relation to the walls thereof.
Claim 8
Dependent Claim 16 words
An article according to claim 6 wherein the polymeric material of said fusible ring is thermosetting.
Claim 9
Dependent Claim 16 words
An article according to claim 5 wherein the polymeric material of said fusible ring is thermosetting.
Claim 10
Dependent Claim 18 words
A transparent article according to claim 1 having from about 10 to about 60 of said tubular members.
Claim 11
Dependent Claim 32 words
An article according to claim 1 wherein said heat recoverable member comprises a crystalline polymeric material exhibiting elastomeric properties when heated to a temperature at least equal to its crystalline melting temperature.
Claim 12
Dependent Claim 15 words
An article according to claim 1 wherein said heat recoverable member cOmprises a crosslinked polymer.
Claim 13
Dependent Claim 15 words
An article according to claim 11 wherein said heat recoverable member comprises a crosslinked polyolefin.
Claim 14
Dependent Claim 14 words
An article according to claim 11 wherein said polymer is a vinylidene fluoride polymer.
Claim 15
Dependent Claim 15 words
An article according to claim 13 wherein said polymer is a vinylidene fluoride hexafluoropropene copolymer.

References Cited (Backward Citations)

US3243211A Cited
US3538240A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-03-19 1976-09-18 1977-03-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-03-19 1980-09-18 1981-03-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-03-19 1984-09-18 1985-03-20 $7700.00 Window Closed / Lapsed

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