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:
Jun. 10, 1980
Filed:
Mar. 30, 1978
Applicant:
Inventor:
Thorwald Kipp, Bad Oeynhausen, DE;
Assignee:
Eisenwerk Weserhutte AG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23B / ;
U.S. Cl.
CPC ...
144325 ; 408 42 ; 408 53 ; 427291 ;
Abstract
This invention relates to an improvement in the process for improving the impregnability of wood which is pierced on its surface prior to an impregnation procedure by means of solid, circular needles which are guided essentially perpendicularly to said wood surface, without thereby causing chipping or splintering, the improvement comprising using sharp, circular needles with smooth surfaces, rotating about their central axes, and at an essentially constant ratio of the peripheral speed (u) of these needles to their speed of advance (v) with which they drive into the wood.