US 12,422,066 B2
Coupler with crown head for coupling pipes
Jacob Friedriech, Tivon (IL); Avraham Tavor, Yokneam Ilit (IL); and Evgeny Nayman, Afula (IL)
Filed by Jacob Friedriech, Tivon (IL); and Avraham Tavor, Yokneam Ilit (IL)
Filed on May 24, 2022, as Appl. No. 17/751,698.
Claims priority of provisional application 63/208,009, filed on Jun. 8, 2021.
Prior Publication US 2023/0021084 A1, Jan. 19, 2023
Int. Cl. F16L 21/06 (2006.01); F16L 21/00 (2006.01); F16L 21/02 (2006.01)
CPC F16L 21/065 (2013.01) [F16L 21/005 (2013.01); F16L 21/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A pipe coupler for coupling pipes of different kinds, said pipe coupler comprising:
a main body;
a crown head with a reverse slope internal surface at one or more ends of said main body;
a seal inside each of said crown head(s);
a grip ring with a reverse slope shape in its external surface inside each one of said crown head(s); and
a clamp band that wraps around external surface of each one of said crown head(s),
wherein said grip ring comprises a set of sharp teeth in its internal surface,
wherein said reverse slope shape of said external surface of said grip ring corresponds to and in friction contact with said reverse slope shape of said internal surface of said crown head(s),
wherein said grip ring is positioned inside a sloped cavity of said crown head(s) and configured to be tightened to a pipe from outside by said clamp band,
wherein said grip ring is configured to travel axially along said reverse slope surface of said crown head(s) upon development of radial pressure inside said pipe and increase grip of said inner teeth on outer surface of said pipe with increase of said pressure.