Norman W Gavin

US Patent:

6385938, May 14, 2002

Filed:

Sep 26, 2000

Appl. No.:

09/669599

Inventors:

Norman W. Gavin - North Haven CT 06473

International Classification:

E04C 516

US Classification:

52677, 52678, 52689

Abstract:

A pair of curved arms attached to a body form an annular seat for holding a first diameter rebar, a slot through the outer diameter of the body forms a radially inward pathway to the seat for rebar, the apex of a convex bar attached to the body is yieldable radially outward to pressure of a second, larger diameter rebar in the seat and is not significantly moved by the first diameter rebar when the smaller diameter first diameter rebar is in the seat. The seat springally grips either diameter rebar.

US Patent:

6450505, Sep 17, 2002

Filed:

Jul 22, 1999

Appl. No.:

09/358964

Inventors:

Norman W. Gavin - North Haven CT 06473

International Classification:

F16L 502

US Classification:

277606, 277609, 277607, 277616, 405 43, 249 39

Abstract:

In molding a seal in a concrete wall, the front end of a tubular element is inserted between an outer tubular wall which forms part of the opening in the concrete wall and a conical seal that is integrally molded with the outer tubular wall. The tubular element includes a foot having a fastener portion that is spaced from and coplanar with the back end of the tubular element.

US Patent:

6460860, Oct 8, 2002

Filed:

Dec 18, 2000

Appl. No.:

09/739493

Inventors:

Norman W. Gavin - Wallingford CT 06492

International Classification:

F16L 21025

US Classification:

277604, 277606, 277607, 277617, 277636, 277917, 285 4, 285230, 249 39, 522208

Abstract:

A tubular wall sealed at a first end by an integrally molded annular wall, forming a cap, is cast in the concrete wall of a low pressure vessel, forming a sealed cavity in the concrete. One end of a rubber tubular gland wrapped sealingly around the outside of the second end of the tubular wall is sealed in the concrete by a radially extending cast-in anchor. The diameter of the other end of the rubber tube is smaller than the diameter of the tubular wall of the cap.

US Patent:

6484451, Nov 26, 2002

Filed:

Jan 22, 2001

Appl. No.:

09/766795

Inventors:

Norman Gavin - Wallingford CT

Assignee:

United Concrete Products, Inc. - Yalesville CT

International Classification:

E02D 2912

US Classification:

52 20, 52 19, 52 98, 220 403, 220 426, 404 25

Abstract:

A stackable riser having a substantially smooth outer surface has a first open end defined by an edge and a second open end defined by a pair of adjacent channels, so that the edge defining the first open end of a first riser can mate with one of the channels defining the second open end of a second riser. A detachable anchor tab extends radially from the outer surface about the circumference of the riser. A plurality of risers can be stacked one on top of another, with, for example, the bottommost riser embedded in concrete and the risers above it embedded in soil. Preferably, the anchor tab of the bottommost riser remains attached to the riser and the anchor tab of the risers above it is removed.

US Patent:

6609718, Aug 26, 2003

Filed:

Jul 24, 2002

Appl. No.:

10/202206

Inventors:

Norman W. Gavin - Yalesville CT 06492

International Classification:

F16L 502

US Classification:

277606, 277609, 277607, 277616, 405 43, 249 39

Abstract:

In molding a seal in a concrete wall, the front end of a tubular element is inserted between an outer tubular wall which forms part of the opening in the concrete wall and a conical seal that is integrally molded with the outer tubular wall. The tubular element includes a foot having a fastener portion that is spaced from and coplanar with the back end of the tubular element.

US Patent:

6655093, Dec 2, 2003

Filed:

Sep 4, 2001

Appl. No.:

09/946293

Inventors:

Norman W. Gavin - Wallingford CT 06492

International Classification:

E02D 2912

US Classification:

52 20, 52 19, 525926, 220 426

Abstract:

A riser section and cover is disclosed. The riser section has a smooth cylindrical sidewall surface, a tapered end and a channel end, a removable anchor tab and bosses and ribs on the inside of the sidewall. The riser sections are stackable. The cover has a channel end to removably connect to a riser section. The cover has stowable handles and posts extending from a bottom surface that define wells open at a top surface which fit into the wells of another cover. A bracket is disclosed to releasably secure and position a cover with attached riser section on a concrete form wall.

US Patent:

6666349, Dec 23, 2003

Filed:

Nov 1, 2001

Appl. No.:

10/004198

Inventors:

Norman W. Gavin - Yalesville CT 06492

International Classification:

B65D 1728

US Classification:

2205671, 220484, 220661

Abstract:

A septic system tank vertical wall has vertically overlapping grooved rings having specific diameters for receiving existing sealing couplers for septic system pipe. One wall of the groove has portions at different angles from the wall. The grooves are at the same depth and discontinuous at their intersections.

US Patent:

6688072, Feb 10, 2004

Filed:

Jan 31, 2003

Appl. No.:

10/355918

Inventors:

Norman W. Gavin - Wallingford CT 06492

International Classification:

E04B 116

US Classification:

5274214, 52 19, 527411, 249 1, 249 83, 264 32

Abstract:

A riser section and cover is disclosed. The riser section has a smooth cylindrical sidewall surface, a tapered end and a channel end, a removable anchor tab and bosses and ribs on the inside of the sidewall. The riser sections are stackable. The cover has a channel end to removably connect to a riser section. The cover has stowable handles and posts extending from a bottom surface that define wells open at a top surface which fit into the wells of another cover. A bracket is disclosed to releasably secure and position a cover with attached riser section on a concrete form wall.