Robert Grant Truesdale

US Patent:

53609450, Nov 1, 1994

Filed:

May 1, 1991

Appl. No.:

7/693903

Inventors:

Robert G. Truesdale - Cary NC
John E. Francis - Raleigh NC

Assignee:

Raychem Corporation - Menlo Park CA

International Classification:

H02G 15013

US Classification:

174151

Abstract:

A re-enterable seal (25) for sealing an elongate object (16) passing through a barrier (24) between two environments (53, 54) includes an invertible enclosing member (30) containing a sealant (40). The sealant (40) is adhered to the inside surface (31) of the enclosing member (30). During insertion of the elongate member (16), the enclosing member (30) is inverted inside-out, with the sealant remaining on the inside surface (31) (now positioned outside the enclosing member). The elongate member (16) is then pulled back, causing the enclosing member (30) to re-invert, and bringing the sealant (40) into sealing compression against the elongate member (16).

US Patent:

55570739, Sep 17, 1996

Filed:

Oct 31, 1994

Appl. No.:

8/332194

Inventors:

Robert G. Truesdale - Cary NC
John E. Francis - Raleigh NC

Assignee:

Raychem Corporation - Menlo Park CA

International Classification:

H02G 15103

US Classification:

174151

Abstract:

A re-enterable seal (25) for sealing an elongate object (16) passing through a barrier (24) between two environments (53, 54) includes an invertible enclosing member (30) containing a sealant (40). The sealant (40) is adhered to the inside surface (31) of the enclosing member (30). During insertion of the elongate member (16), the enclosing member (30) is inverted inside-out, with the sealant remaining on the inside surface (31) (now positioned outside the enclosing member). The elongate member (16) is then pulled back, causing the enclosing member (30) to re-invert, and bringing the sealant (40) into sealing compression against the elongate member (16).