Deere & Company

Daniel M Sulzer

Cory A Ott

Jason M Simmons

Arun Narayanan

Mark Nier

Gregory A Kittle

Adam J Koestler

A quick coupler primary lock arrangement includes a fore-and-aft guided wedge arrangement carried by a cross shaft and is biased forwardly to a lock position by a first spring arrangement, and includes a secondary lock arrangement includes a locking pawl arrangement pivotally mounted to the cross shaft and biased, by a second spring arrangement, to a secondary lock position wherein the pawl arrangement includes a surface disposed in a confronting locking disposition relative to an abutment surface of a fixed plate of the coupler to thereby prevent rearward movement of the wedge arrangement from the lock position. A normally depressurized hydraulic cylinder is coupled to the pawl arrangement and when selectively pressurized overcomes spring biasing forces and pivots the pawl arrangement from the secondary locking position and then shifts the wedge arrangement rearward to a coupler release position. An electro-hydraulic control arrangement prevents unintentional operation of the hydraulic cylinder.

Quick coupler having spring applied, hydraulically released primary and secondary lock members mounted on same cross shaft

A coupler assembly for coupling a work tool to a work machine. The assembly includes a body, a first locking mechanism, and a second locking mechanism. The first locking mechanism is pivotable about a pivot from a first position to a second position and is configured to be coupled to the work tool in the first position and decoupled in the second position. The second locking mechanism includes a pin having a first end and a second end, a tab coupled to the pin proximate the second end, and a spring disposed between the first end and the second end. The second locking mechanism is axially and pivotably movable about an axis such that the second locking mechanism includes a locked position and an unlocked position. As the first locking mechanism moves from the second position to the first position, the second locking mechanism automatically moves to the locked position.

Coupler assembly for releasably coupling a work machine to work tool and method thereof

The invention is directed to a stop pin for a hydraulically actuated brake. The stop pin is provided with a rotation prevention portion for preventing relative rotation between the hydraulic brake piston and the brake housing. The stop pin is provided with a threaded mounting portion for mounting the stop pin to the annular hydraulic brake piston. A hex portion is located adjacent to the threaded mounting portion to facilitate assembly of the stop pin in the hydraulic braking piston. On the other side of the hex nut portion, opposite the threaded mounting portion, the stop pin is provided with a rotation prevention portion which cooperates with the sidewalls of a stop pin bore in the brake housing to prevent relative rotation between the annular piston and the housing. A screw is screwed into the rotation prevention portion and defines a shaft and cap on which is mounted a split sleeve. The split sleeve engages the sidewalls of the stop pin bore and defines the brake release distance.

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Dubuque, IA, United States of America

Daniel M Sulzer