Patent ID: 8920106
Filing Date: 2014-12-30
Classification: E02F,Y10S,Y10T

Abstract:
1. A thumb assembly for an excavator having a lifting arm, the thumb assembly comprising: a base member coupled to the lifting arm, the base member including a link member mounting plate defining a first link mounting aperture and a second link mounting aperture, and a thumb mounting lug; a thumb member defining a first pivot joint and a second pivot joint, the thumb member being pivotally connected to the thumb mounting lug at the second pivot joint; a link member having a first end defining a base mounting aperture and a second end defining a thumb mounting aperture, the link member being pivotably coupled to the thumb member first pivot joint at the thumb mounting aperture, the link member having a first working position, in which the base mounting aperture is adjacent to the first link mounting aperture, and a second working position, in which the base mounting aperture is adjacent to the second link mounting aperture; a removable pin sized for insertion through the first and second link mounting apertures and the base mounting aperture to connect the link member to the base member; and a connection-assist system including: