Back to results
US 2016/0102444 A1Published application
Thumb assembly
AssigneeCascade Corporation
InventorsMark William TORAASON, Erik Russell BARE
Life of this patent
Estimating the term…
Abstract
Mechanical stops in the linkage of a hydraulic thumb for a materials handling machine protect the hydraulic thumb actuator from damage.
Claims15
A thumb for a material handling machine having a stick, the thumb comprising:
- (a) a thumb frame pivotally connected to the stick;
- (b) a thumb link having a first end portion pivotally attached to the thumb frame and a second end portion;
- (c) a thumb actuator pivotally connected to the second end portion of the thumb link;
- and
- (d) a thumb control link including a first end portion pivotally attached to the stick, a connection to the thumb link and the thumb actuator, and a stop arranged to contact a surface of the stick and limit pivoting of the thumb control link in response to retraction of the thumb actuator.
2 more elements
A thumb for a material handling machine having a stick, the thumb comprising:
- (a) a thumb frame pivotally connected to the stick;
- (b) a thumb link having a first end pivotally attached to the thumb frame and a second end;
- (c) a thumb actuator pivotally connected to the second end of the thumb link;
- and
- (d) a thumb control link including a first end pivotally attached to the stick, a connection to the thumb link and the thumb actuator, and a stop arranged to contact a surface of the stick and limit pivoting of the thumb control link in response to extension of the thumb actuator.
2 more elements
A thumb for a material handling machine having a stick, the thumb comprising:
- (a) a thumb frame pivotally connected to the stick;
- (b) a thumb link having a first end pivotally attached to the thumb frame and a second end
- (c) a thumb actuator pivotally connected to the second end of the thumb link;
- and
- (d) a thumb control link including a first end portion pivotally attached to the stick, a connection to the thumb link and the thumb actuator, and a stop arranged to contact a surface of the stick and limit pivoting of the thumb control link in response to extension and retraction of the thumb actuator.
2 more elements
Dependencies are inferred from the claim text.