US 12,297,619 B2
Modular hydraulic thumb for excavator
Nolan Mitchell, Grand Coulee (CA); Bryan Melnyk, Nisku (CA); and David Germs, Sherwood Park (CA)
Assigned to Brandt Industries Canada Ltd., Regina (CA)
Filed by Brandt Industries Canada Ltd., Regina (CA)
Filed on Oct. 21, 2021, as Appl. No. 17/507,013.
Prior Publication US 2023/0128543 A1, Apr. 27, 2023
Int. Cl. E02F 3/40 (2006.01)
CPC E02F 3/404 (2013.01) 24 Claims
OG exemplary drawing
 
1. A modular thumb for use with a bucket of an excavator arm, the modular thumb comprising:
a thumb body rotating with respect to the excavator arm, the thumb body comprises:
a pair of spaced elongate members;
a main body extending between the elongate members, the main body having a bucket side and a non-bucket side; and
at least one attachment point on the non-bucket side and along the elongate members, the at least one attachment point receiving an actuating arm;
a pair of elongate arms rotatably coupled at a shoulder point to the excavator arm, the pair of elongate arms rotatably coupled opposite to the shoulder point to an actuator of the excavator arm; and
an elbow link connected to the pair of elongate arms opposite to the shoulder point at a first end of the elbow link and rotatably coupled to the actuating arm at a second end of the elbow link.