Protective article

• US 4,690,831 A
• Filed: 06/18/1986
• Issued: 09/01/1987
• Est. Priority Date: 06/23/1983
• Status: Expired due to Term

• Current Assignee: Tyco Electronics Corporation (TE Connectivity Limited)
• Original Assignee: Raychem Corporation (TE Connectivity Limited)
• Inventors: Dubrow, Robert S., Uken, William D., Dittmer, Catherine A., Nelson, Carib
• Primary Examiner(s): Newsome, John H.
• Application Number:
  US06/875,802
• Time in Patent Office: 440 Days
• Field of Search: 427/44, 427/54.1, 427/350, 427/358, 156/196, 156/199, 156/221, 156/224, 264/552, 264/553
• US Class Current: 427/505
• CPC Class Codes: F16L 58/18 specially adapted for pipe fittings
• CPC Class Codes: G02B 6/4447 with divided shells G02B6/4448 takes precedence
• CPC Class Codes: H01B 17/60 Composite insulating bodies
• CPC Class Codes: H01R 13/5216 characterised by the sealing material, e.g. gels or resins
• CPC Class Codes: H01R 4/22 End caps, i.e. of insulating or conductive material for covering or maintaining connections between wires entering the cap from the same end
• CPC Class Codes: H01R 4/70 Insulation of connections end caps H01R4/22
• CPC Class Codes: H01R 4/72 using a heat shrinking insulating sleeve
• CPC Class Codes: H01R 43/005 for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing
• CPC Class Codes: H02G 15/10 protected by boxes, e.g. by distribution, connection or junction boxes
• CPC Class Codes: H05K 3/284 for encapsulating mounted components H05K1/185 takes precedence
• CPC Class Codes: Y10T 156/1048 to form dished or receptacle-like product

Abstract

An article for protecting a substrate includes a preshaped member having a shape similar to that of the substrate being protected, the article having a thin layer of gel disposed in intimate contact with an inner surface of the member such that the gel is disposed in intimate contact with the substrate when the member is disposed therearound. Preferably, the gel comprises an open looped three-dimensional network, the gel being relatively soft, elastic, and having an ultimate elongation in excess of 100%.

Claims

1. A method of making an article for protecting a substrate, comprising:

transporting a backing material past a gel dispenser;

dispensing a gel from the gel dispenser onto the backing; and

deforming the backing and the gel into a predetermined shape such that at least a major portion of an inner surface of the backing has gel thereon, the shape being similar to an external surface shape of at least part of a substrate to be protected.

2. The method as claimed in claim 1, the gel dispenser dispensing a non-cured gel onto the backing, and further comprising the step of curing the dispensed gel prior to deforming the backing.

3. The method as claimed in claim 2, further comprising the step of securing the gel to the backing prior to deforming the backing such that the gel stretches and sticks to the backing when deforming the backing.

4. The method as claimed in claim 3, the backing being continuously transported, the deformed backing being severed from a remainder of the backing subsequent to its deformation.

5. The method as claimed in claim 3, the backing being made from a material selected from the group of materials consisting of high density polyethylene, kynar, and polycarbonate.

6. The method as claimed in claim 2, the gel being tacky subsequent to being cured, and further comprising the step of covering an open side of the deformed backing with a release sheet.

7. The method as claimed in claim 2, the gel being cured by utilizing a chemical agent.

8. The method as claimed in claim 2, the gel being cured by radiation, the radiation being beta particles or ultraviolet radiation.

9. The method as claimed in claim 1, further comprising the step of securing the gel to the backing such that the gel stretches and sticks to the backing when the backing is deformed, the gel being secured to the backing by radiating an interface between the gel and the backing.

10. The method as claimed in claim 9, the radiation used for securing the gel to the backing being beta particles or ultraviolet radiation.

11. The method as claimed in claim 3, the gel being secured to the backing by an adhesive.

12. The method as claimed in claim 1, the backing being deformed such that the gel is stretched as the backing is deformed, a material from which the backing is composed having sufficient structural strength subsequent to its deformation to keep the gel in its stretched state.

13. The method as claimed in claim 1, the gel being disposed on the backing in a cured state.

14. The method as claimed in claim 13, the cured gel being disposed in a flexible matrix prior to being disposed onto the backing.

15. The method as claimed in claim 14, the flexible matrix comprising a material having a plurality of open interstices having an average volume of less than 0.01 inch³, the gel including a plurality of interconnected segments which lie within the interstices of the matrix.

16. The method as claimed in claim 15, the matrix and the impregnant being such that when the gel and the matrix are stretched, the matrix reaches its ultimate elongation before the gel reaches its ultimate elongation.

17. The method as claimed in claim 1, further comprising the step of disposing a release sheet over an open side of the deformed backing subsequent to its deformation.

18. The method as claimed in claim 1, further comprising the step of disposing a release sheet onto an exposed surface of the gel subsequent to dispensing the gel and prior to deforming the gel.