US 12,280,621 B2
Hollow tire and method of making same
Kyle Robert Knotowicz, Jamestown, NY (US); and Joseph J. Peterson, Warren, PA (US)
Assigned to Superior Tire and Rubber Corp., Warren, PA (US)
Filed by Superior Tire and Rubber Corp., Warren, PA (US)
Filed on Jul. 15, 2019, as Appl. No. 16/511,967.
Claims priority of provisional application 62/698,519, filed on Jul. 16, 2018.
Prior Publication US 2020/0016933 A1, Jan. 16, 2020
Int. Cl. A01C 5/06 (2006.01); A01C 7/20 (2006.01); B29C 41/04 (2006.01); B29C 41/06 (2006.01); B60C 3/02 (2006.01); B60C 3/06 (2006.01); B60C 7/12 (2006.01); B60C 1/00 (2006.01); B60C 7/00 (2006.01)
CPC B60C 7/125 (2013.01) [A01C 5/064 (2013.01); A01C 5/068 (2013.01); A01C 7/203 (2013.01); B29C 41/04 (2013.01); B29C 41/06 (2013.01); B60C 3/02 (2013.01); B60C 3/06 (2013.01); B60C 2001/0091 (2013.01); B60C 2007/005 (2013.01); B60C 2200/08 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A seeder tire comprising:
a first sidewall spaced apart from a second sidewall, whereby the first sidewall has a base portion and an opposing end and an L-shaped cross section between the base portion of the first sidewall and the opposing end of the first sidewall, and the second sidewall has a base portion and an opposing end and an L-shaped cross section between the base portion of the second sidewall and the opposing end of the second sidewall; a contact member extending from the opposing end of the first sidewall to the opposing end of the second sidewall; a bridging member extending from the base portion of the first sidewall to the base portion of the second sidewall; a central axis; and a sidewall structure extending outwardly away from the contact member and the second sidewall to a disc contact portion of the sidewall structure;
whereby the sidewalls, contact member and bridging member define a hollow channel;
whereby the L-shaped cross section of the second sidewall comprises a leg that continuously increases in cross-sectional thickness as it extends laterally away from the central axis; and
whereby the seeder tire has a homogeneous single-piece construction made of one or more polyurethane compounds.