Caterpillar Inc.

Pushkar N Tamhane

Paul Alan Rousseau

John P Hall

Gary L Walth

Lucas G De Caroli

David H True

An example snow blower machine includes a first stage snow mover and a second stage snow mover. Snow is received at an inlet opening of the first stage and expels snow to the discharge opening. In a second stage, an impeller chamber receives snow from the first stage. The impeller chamber extends from a snow receiving end proximate the discharge opening to a distal end rearward of the discharge opening. To receive expelled snow from the first stage and deliver the snow to a second discharge opening, an impeller rotatable around an impeller axis at a hub is disposed in the impeller chamber. The impeller may be rotated by an impeller motor having a motor body that is at least partially disposed within the hub.

Impeller design for snow blower

A work machine includes a boom body having a top boom support structure, a bottom boom support structure, a first lateral boom support structure, and a second lateral boom support structure which cooperate with each other to define a boom void therein. The boom body also has a machine frame coupling defined therein. The work machine also includes a coupling subassembly which is positioned within the boom void and attached to the boom body. The coupling subassembly includes (i) a first coupling support structure and a second coupling support structure which are spaced apart from each other so as to define a boss space therebetween and (ii) a boss positioned within the boss space and secured to the first coupling support structure and the second coupling support structure. In addition, (i) the boss has a pin passageway extending therethrough, (ii) the first coupling support structure has a first pin aperture defined therein, (iii) the second coupling support structure has a second pin aperture defined therein, and (iv) the pin passageway, the first pin aperture, and the second pin aperture are aligned with each other. The work machine further includes (i) a work machine stick which is pivotably coupled to the coupling subassembly and (ii) a work machine frame coupled to the machine frame coupling of the boom body.

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Apex, NC, United States of America

Pushkar N Tamhane