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:
Aug. 10, 1976
Filed:
Apr. 29, 1974
Thomas A Williams, Towanda, PA (US);
Other;
Abstract
Artificial logs are made by forcing a mixture of wood chips and a binder such as wax or paraffin through a tube by means of a feed screw. A section of the tube beyond the feed screw includes a short first portion of constant diameter which by itself has an insufficient length to provide enough friction to generate adequate pressure, followed by a second portion of variable cross-section, the cross-section of which is controlled by a predetermined force, so that friction and pressure in both sections may be readily controlled and limited to values which adequately form logs without the use of excessive power or the generation of excessive heat. By periodically varying the force on the adjustable section portion, a continuous length of log stock being formed may be severed into successive lengths without need for a subsequent sawing operation.