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:
Dec. 07, 1982
Filed:
Jan. 21, 1981
Applicant:
Inventor:
Matti Kaimo, Virkkala, FI;
Assignee:
Oy Lohja AB, Nummela, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E02D / ;
U.S. Cl.
CPC ...
403316 ; 403338 ; 403374 ; 405252 ;
Abstract
The invention relates to an extension joint for concrete poles of the type in which at least one pin in a first pole penetrates into a recess in a second pole. The end of the pin is provided with a shoulder and is locked in the second pole by means of a wedge having shanks each engaging one side of the pin. The wedge is locked in its driven-in position while being driven in by the bending of the shanks towards each other after they have passed the pin. The wedge and the free end of the pin are covered by a channel member or furrow, whose side walls have portions bent inwards and guiding the shanks when the wedge is being driven in.