Lightweight air coupler
AssigneeDeere & Company
InventorsNathan Albert Mariman, Dan Michael Deering, Daniel Bruce Thiemke
Life of this patent
Estimating the term…
Abstract
A lightweight detachable air coupler for an air seeder comprises an aluminum frame having two steel sleeves die cast into the frame. The frame is provided with two circular apertures each being defined by a rim having an internal cylindrical surface. The steel cylindrical sleeve has a first end having an exterior surface that is diagonally knurled. Two steel sleeves are mounted in the mold for the aluminum frame and cast aluminum is injected into the mold. The liquid aluminum adheres to the knurled exterior surface of the steel sleeves. The aluminum frame has a front surface from which the rims project and a rear surface from which the sleeves project.
Claims1
A method of making an air coupler for an air seeder, the method comprising the following steps:
- forming a cylindrical steel sleeve having an exterior surface and a first end;
- knurling the exterior surface of the steel sleeve at the first end;
- placing the cylindrical steel sleeve in a mold for an aluminum frame having a rim with an internal surface;
- molding the aluminum frame so that the internal surface of the rim is cast around the knurled exterior surface of the steel sleeve.
Dependencies are inferred from the claim text.