Patent ID: 9719227
Date: 2017-08-01
CPC Classifications: E02F

Claim:
1. A tool attachment coupler, wherein: the coupler is structured for: a) fixation to the boom of a manipulable-boom-tractor; b) attachment and detachment of a tool to and from the boom; and c) maintaining the tool in a securely-attached condition with respect to the boom during operation of the tool on the tractor; the tool includes a top-hook and a bottom-lug for interaction with the coupler; the coupler includes: a) a frame, by which the coupler is fixed to the boom; b) a slider mounted and guided in the frame for left/right movement relative to the frame between a slider-left position and a slider-right position; and c) a slider-spring, which biases the slider to its slider-right position; the slider includes a bottom-pin, which passes through a lug-hole in the bottom-lug thereby locking the tool to the boom when: a) the bottom-lug is engaged in the coupler, and b) the slider is in its slider-right position; the slider is guided in the frame for up/down movement relative to the frame between a slider-up position and a slider-down position; a) a lever, mounted and guided in the frame for up/down movement relative to the frame between a lever-up position and a lever-down position; and b) a lever-spring, which biases the lever to its lever-down position; a) the slider being in its slider-left and slider-up positions, and the lever being in its lever-up position, the right-facing abutment engages the frame, thereby blocking the slider from undergoing rightwards movement; b) the slider being in its slider-down position, the right-facing abutment then is clear of the frame, freeing the slider to undergo rightwards movement; c) the slider being in its slider-down position, and the lever being in its lever-down position, the right-facing abutment engages the lever, thereby blocking the slider from undergoing rightwards movement; d) the lever being in its lever-up position, the right-facing abutment then is clear of the lever and of the frame, freeing the slider to undergo rightwards movement; whereby the slider is free to undergo rightwards movement to its slider-right position when both a) the slider is in its slider-down position, and b) the lever is in its lever-up position; and whereby the slider is blocked from undergoing rightwards movement to its slider-right position: a) when the slider is in its slider-up position, and b) when the lever is in its lever-down position; a) the bottom-pin is in the lug-hole of the tool, b) the slider is in its slider-up and its slider-right position, and c) the lever is in its lever-up position; a) the bottom-lug is entered in the coupler, b) the slider is in its slider-left and slider-up positions, c) the lever is in its lever-up position, and d) the right-facing abutment engages the frame; a) no bottom-lug is present in the coupler, b) the slider is in its slider-left and its slider-down position, c) the lever is in its lever-down position, and d) the right-facing abutment engages the lever.