Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Reexamination Certificate
2006-11-09
2009-02-24
Lagman, Frederick L (Department: 3672)
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
Reexamination Certificate
active
07494300
ABSTRACT:
An ice anchor and method of use thereof for securing or rescuing a vehicle which has become stuck or trapped while on a frozen surface of a body of water. The ice anchor may include blades which form a shaft and fit into an opening in the ice, and plates that limit insertion of the anchor into the hole and define an attachment area for a safety device such as a rope, chain, or cable, which may include a tensioning device. When lateral force is placed on the shaft by tensioning the safety device, the outer surfaces of the blades engage the inner wall of the hole and oppose the lateral forces, allowing the vehicle to be removed from the gap or opening in the ice.
REFERENCES:
patent: 1253746 (1918-01-01), Teeling
patent: 3134186 (1964-05-01), Krueger
patent: 3694950 (1972-10-01), Maier
patent: 4568036 (1986-02-01), Kearney
patent: 4666345 (1987-05-01), Seegmiller
patent: 4747226 (1988-05-01), Todd
patent: 4794718 (1989-01-01), Tillman
patent: 4974997 (1990-12-01), Sero et al.
patent: 4980986 (1991-01-01), Harper
patent: 5048220 (1991-09-01), Harris
patent: 5192169 (1993-03-01), Landsberg
patent: 5911569 (1999-06-01), Isakson
patent: 5971668 (1999-10-01), Miller
patent: 6298611 (2001-10-01), Oliver et al.
patent: 6349514 (2002-02-01), Adams
patent: 6675523 (2004-01-01), Huiras
patent: 6725872 (2004-04-01), Kindell et al.
patent: 6772551 (2004-08-01), Bielinski
patent: 6827994 (2004-12-01), Ellman et al.
patent: 6909845 (2005-06-01), Schillinger
patent: 7082954 (2006-08-01), Flanery et al.
patent: 7302904 (2007-12-01), Burns
patent: 2005/0138856 (2005-06-01), Hansen
patent: 2006/0096151 (2006-05-01), Zazzara
patent: 1250745 (1989-03-01), None
patent: 2140842 (1984-12-01), None
Godfrey & Kahn S.C.
Lagman Frederick L
Stewart Alan R.
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