Corrosion inhibitor retaining seal

• US 5,770,286 A
• Filed: 04/10/1996
• Issued: 06/23/1998
• Est. Priority Date: 04/10/1996
• Status: Expired due to Term

• Current Assignee: Felix L. Sorkin
• Original Assignee: Felix L. Sorkin
• Inventors: Sorkin, Felix L.
• Primary Examiner(s): DYE, RENA
• Application Number:
  US08/630,444
• Time in Patent Office: 804 Days
• Field of Search: 428/35.7, 428/36.9, 428/36.92, 428/36.91, 428/43, 428/131, 428/156, 52/100, 52/301, 52/223.13, 52/223.14, 138/96 R, 138/96 T
• US Class Current: 428/36.9
• CPC Class Codes: E04C 5/08 Members specially adapted to be used in prestressed constructions production of reinforced objects in general B28B23/00; prestressed structures produced in situ E04G21/12
• CPC Class Codes: E04C 5/12 Anchoring devices tools or methods for tensioning in situ E04G21/12
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article
• CPC Class Codes: Y10T 428/1393 Multilayer [continuous layer]
• CPC Class Codes: Y10T 428/1397 Single layer [continuous layer]
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness

Abstract

A seal for use on a tubular member in post-tension construction including a cap having a tubular body and a surface extending across the of the tubular body, and a corrosion-resistant material contained within the interior area of the cap. The surface closes an end of the tubular body. The surface has a frangible area formed thereon. The surface extends transverse to a longitudinal axis of the tubular body at one end of the tubular body. The frangible area has a thickness less than a thickness of a non-frangible remainder of the surface. The cap is formed of a polymeric material. The surface is formed of a deformable polymeric material such that the non-frangible portion of the surface forms a liquid-tight seal with an outer diameter of a tendon extending through the surface. The corrosion-resistant material is contained within the cap of a suitable volume so as to fill a void in the tubular member between the inner diameter of the tubular member and the outer diameter of a tendon extending therethrough.

Claims

1. A transition member for use on an anchorage of a post-tension construction system comprising:

a tubular member having a first end and a second end, said first end for attachment to the anchorage;

a cap affixed to said second end of said tubular member, said cap having a closed frangible surface extending across said second end of said tubular member; and

a corrosion-resistant material positioned within said cap adjacent said closed frangible surface.

2. The transition member of claim 1, said cap slidably received over said second end of said tubular member, said second end of said tubular member being in abutment with said closed frangible surface.

3. The transition member of claim 2, said corrosion-resistant material filling a portion of an interior of said tubular member.

4. The transition member of claim 1, said cap having a tubular body extending around a portion of said tubular member, said closed frangible surface comprising:

a non-frangible area extending inwardly from said tubular body across a portion of said second end of said tubular member; and

a frangible area extending centrally of said non-frangible area across a remainder of said second end of said tubular member.

5. The transition member of claim 4, said frangible area having a lesser thickness than said non-frangible area.

6. The transition member of claim 1, further comprising:

a sealing member affixed to said first end of said tubular member.