US 11,788,250 B2
Loader with improved arm path
Jason Carlson, Lindsborg, KS (US); John Relph, Abilene, KS (US); Matthew Shobe, Salina, KS (US); and Jeff Welsh, Abilene, KS (US)
Assigned to Great Plains Manufacturing, Inc., Salina, KS (US)
Filed by Great Plains Manufacturing, Inc., Salina, KS (US)
Filed on Jul. 29, 2020, as Appl. No. 16/942,441.
Claims priority of provisional application 62/984,476, filed on Mar. 3, 2020.
Claims priority of provisional application 62/879,796, filed on Jul. 29, 2019.
Prior Publication US 2021/0032847 A1, Feb. 4, 2021
Int. Cl. E02F 3/38 (2006.01); E02F 9/22 (2006.01); B62D 55/06 (2006.01); E02F 3/42 (2006.01); E02F 3/34 (2006.01); E02F 3/342 (2006.01); E02F 9/08 (2006.01); E02F 9/20 (2006.01); E02F 9/26 (2006.01); B62D 55/10 (2006.01); B62D 55/125 (2006.01); E02F 9/02 (2006.01); F16D 63/00 (2006.01); B60K 5/12 (2006.01); B62D 55/18 (2006.01); B62D 51/02 (2006.01); B62D 55/12 (2006.01)
CPC E02F 3/382 (2013.01) [B60K 5/12 (2013.01); B62D 51/02 (2013.01); B62D 55/06 (2013.01); B62D 55/10 (2013.01); B62D 55/12 (2013.01); B62D 55/125 (2013.01); B62D 55/18 (2013.01); E02F 3/34 (2013.01); E02F 3/342 (2013.01); E02F 3/3414 (2013.01); E02F 3/3417 (2013.01); E02F 3/422 (2013.01); E02F 9/02 (2013.01); E02F 9/08 (2013.01); E02F 9/0866 (2013.01); E02F 9/0891 (2013.01); E02F 9/2004 (2013.01); E02F 9/2037 (2013.01); E02F 9/22 (2013.01); E02F 9/2221 (2013.01); E02F 9/2267 (2013.01); E02F 9/26 (2013.01); F16D 63/006 (2013.01); E02F 9/2264 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A compact utility loader comprising:
a frame;
a first track and a second track positioned on either side of said frame; and
a pair of loader arms, wherein said loader arms are configured to couple with an attachment via a hitch plate and a hitch pin,
wherein said compact utility loader is configured such that as the loader arms are raised and lowered, the hitch pin follows a path approximately defined by a curve f(x)=4.641e0.34x, wherein “x” represents a distance, in inches, in a horizontal direction and f(x) represents a distance, in inches, in a vertical direction,
wherein the path followed by the hitch pin is approximately defined by the curve such that an actual path travelled by the hitch pin deviates by no more than 1.5 inches in the horizontal direction from the curve for each f(x) value between 4.641 and 85 inches.