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:
Apr. 26, 1988
Filed:
Dec. 09, 1986
Applicant:
Inventors:
Karl-Heinz Ecker, Erkelenz, DE;
Helmut Henschenmacher, Brachelen, DE;
Assignee:
Wirth Maschinen--und Bohrgerate--Fabrik GmbH, Erkelenz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B / ;
U.S. Cl.
CPC ...
81 13 ; 81 55 ;
Abstract
The apparatus prevents undesirable rotation of screw bolts or the like provided at their ends with spanner working surfaces, in particular large screw bolts. Adapters are positioned individually on the said ends of the screw bolts and each has opposing surfaces adapted to the spanner working surfaces of a screw bolt. Carriers are pushed onto the adapters and each have internal teeth which can be brought into mesh with external teeth of the adapter. A holder mounts least two carriers with slight angular mobility, at a spacing corresponding to the axial interval between screw bolts.