Ice screw with non-linear taper
US6505799B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Jan 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S248/925
- WIPO fieldFurniture, games
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.