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. 18, 1978
Filed:
May. 27, 1977
Arthur J Wiltshire, Richmond Heights, OH (US);
Structural Fibers, Inc., Chardon, OH (US);
Abstract
A method and apparatus for forming a fiber preform for use in molding fiber-reinforced, plastic articles is disclosed. The apparatus includes a perforated form which is rotated about its longitudinal axis while a vacuum is applied internally. Cutters deposit short lengths of fibers on the rotating form by traversing the form from one end to another, and a binder resin is sprayed onto the fibers as they are deposited. The form is cylindrical and at least a major portion of its sidewall is initially covered with a flexible bellows. As the cutters traverse the form, the bellows is collapsed ahead of the cutters to incrementally expose the perforations. An oven is provided to cure the resin while the preform remains on the form.