The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 02, 1985
Filed:
Jul. 12, 1982
Walter J Rozmus, Traverse City, MI (US);
Kelsey-Hayes Company, Romulus, MI (US);
Abstract
An assembly and method for hot consolidating powder metal by heat and pressure in a container. The container is a mass of material substantially fully dense and incompressible with at least a portion which is capable of plastic flow at pressing temperatures and forming a closed cavity of a predetermined shape and volume for receiving a quantity of powder metal with the interior walls being movable to reduce the volume of the cavity for compacting powder metal into an article. A shaping insert is disposed in the cavity for defining a void in the article as the powder metal is compacted against the shaping insert. A force-responsive means allows relative movement between the shaping insert and at least a portion of the interior walls of the cavity as powder metal is compacted in response to a force reducing the volume of the cavity. In one embodiment the force-responsive means takes the form of a deformable projection extending from the shaping insert into a recess in the cavity whereby the projection will be deformed in response to a predetermined force to allow the shaping insert to move relative to the interior cavity walls. In another embodiment the shaping insert is supported by a press fit whereby the shaping insert is allowed to move in response to a predetermined compacting force. The force applied to the container may be applied by gas pressure in a gas autoclave or by pressing the container to cause plastic flow of the container mass.