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:
Jan. 14, 2003
Filed:
Jan. 04, 2002
John Bercaw, Salt Lake City, UT (US);
Chris Harmston, Sandy, UT (US);
William J. Reimann, Salt Lake City, UT (US);
Paul Tusting, Salt Lake City, UT (US);
Tyler Warner, Salt Lake City, UT (US);
Black Diamond Equipment, Ltd. Inc., Salt Lake City, UT (US);
Abstract
An ice screw device for winter, alpine and ice climbing includes a banger couplable to a tubular shank with a screw thread. The tubular shank includes an ice engaging portion configured to be inserted into ice, a tip, and a head portion. The ice engaging portion includes a length and a reverse taper. A majority of the reverse taper of the ice engaging portion is located proximate the tip and within less than half of the length of the ice engaging portion from the tip. In addition, the taper of the ice engaging portion is non-linear. The ice engaging portion of the tubular shank can have at least two sections.. A first section nearer the tip has a first taper different from a second taper of a second section nearer the head portion.