US 11,739,868 B2
Dig tubes and fittings for tubulars
Clint Scott Van Berkel, St. Albert (CA); Chris Aron Wood, Kelowna (CA); and Ricardo Januario, Edmonton (CA)
Assigned to Vac Safe Solutions Ltd., St. Albert (CA)
Filed by Vac Safe Solutions Ltd., St. Albert (CA)
Filed on Apr. 9, 2021, as Appl. No. 17/227,181.
Application 17/227,181 is a continuation of application No. 15/435,236, filed on Feb. 16, 2017, granted, now 10,995,887.
Claims priority of provisional application 62/296,066, filed on Feb. 16, 2016.
Claims priority of application No. 2931476 (CA), filed on May 30, 2016.
Prior Publication US 2021/0332919 A1, Oct. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. F16L 21/06 (2006.01); E02D 17/00 (2006.01); E02F 3/90 (2006.01); E02F 5/00 (2006.01); F16L 9/12 (2006.01)
CPC F16L 21/06 (2013.01) [E02D 17/00 (2013.01); E02F 3/90 (2013.01); E02F 5/003 (2013.01); F16L 9/12 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A hydrovac vehicle or a flusher truck, comprising:
a vacuum system mounted on the hydrovac vehicle or flusher truck; and
a vacuum tube in fluid connection with the vacuum system;
the vacuum tube further comprising a tube part comprising:
a female fitting comprising an end that includes an upset for receiving a male fitting, the upset having an outer circumference and an inwardly extending groove extending around the outer circumference for receiving a clamp or portion of a clamp and the upset having an end face and inner surface, the upset having an undercut between the end face and inner surface for receiving a flange of the male fitting, and
the tube part being made from high density polyethylene having a density in the range of 0.93 to 0.97 g/cm3.