US 12,286,774 B2
Stub-up coupling system
Brian E. Ismert, Belton, MO (US); Cory Adams, Raymore, MO (US); and Christopher J. Ismert, Kansas City, MO (US)
Assigned to Sioux Chief Mfg. Co., Inc., Kansas City, MO (US)
Filed by Sioux Chief Mfg. Co., Inc., Kansas City, MO (US)
Filed on Jan. 17, 2023, as Appl. No. 18/155,570.
Claims priority of provisional application 63/383,974, filed on Nov. 16, 2022.
Claims priority of provisional application 63/266,895, filed on Jan. 18, 2022.
Prior Publication US 2023/0228068 A1, Jul. 20, 2023
Int. Cl. E03B 7/09 (2006.01); E03B 7/00 (2006.01); E03B 7/07 (2006.01); F16L 55/115 (2006.01)
CPC E03B 7/09 (2013.01) [E03B 7/003 (2013.01); E03B 7/075 (2013.01); F16L 55/1152 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A coupler for pipe comprising:
a coupler body formed from a cylindrical wall enclosing a hollow interior and having an abutment feature projecting inward from an inner surface of the coupler body and dividing the coupler body into a first glue-hub extending inward from a first open end of the coupler body to the abutment feature and a second glue-hub extending from the abutment feature toward a second end of the coupler body, the coupler body further includes a knock-out section extending from a distal end of the second glue-hub toward the second end of the coupler body, a diameter of an inner surface of the knock-out section is greater than a diameter of an inner surface of the second glue-hub such that a shoulder is formed between the inner surface of the knock-out section and the inner surface of the second glue-hub; a coupler knock-out member extends across and closes the second end of the coupler body and is connected to an inner surface of the coupler body along the knock-out section by a web of reduced thickness relative to the coupler knock-out member, wherein the first glue-hub is configured to receive an end of a first pipe and the second glue-hub is configured to receive an end of a second pipe when the coupler knock-out member has been removed from the second end of the coupler body.