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:
Nov. 09, 1976
Filed:
Mar. 12, 1975
Applicant:
Inventor:
Robert Graff, Freeport, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B43m / ;
U.S. Cl.
CPC ...
401219 ; 401 48 ;
Abstract
An apparatus for applying colored lines on ice, in which a roller can be moved over ice in a positive and controllable manner, is provided with at least one wheel having a multiplicity of small protrusions or points on its peripheral surface. The protrusions on the tread of the wheel dig into the ice to give easy traction and thus ensure proper rotation of the roller without undesired swerving slippage.