Tent – canopy – umbrella – or cane – Portable shelter
Patent
1996-07-24
1998-01-27
Canfield, Robert
Tent, canopy, umbrella, or cane
Portable shelter
256 125, 52DIG2, 135902, 135116, 135119, E04H 1700, E04H 1500
Patent
active
057113360
ABSTRACT:
A light-weight shelter to protect a user from exposure to chill winds and material entrained therein has a peripheral wall inclined inwardly. The upper edge of the wall is supported by substantially vertical elements which also hold down the lower edge of the wall. Wind-entrained material, upon contacting the outer surface of the inwardly inclined wall, initially will tend to move upward. The wind passes over a sheltered zone defined within the wall, and any entrained matter is slowed down by friction with the wall and eventually falls to accumulate around a bottom edge outside of the wall. In one aspect of the invention, the wall is attached to a base having an outwardly extending portion on which the initially entrained particulate matter accumulates, and one or more outwardly extending flanges are provided to extend outwardly from the wall to even more effectively intercept entrained particulate matter from oncoming wind. The wall may be made to any suitable height. To facilitate stepping over to enter or leave the sheltered zone within, in another aspect of this invention a portion of the upper edge of the wall is made to extend downward to a convenient height.
REFERENCES:
patent: 1465894 (1923-08-01), Crowley
patent: 1930404 (1933-10-01), Wagner
patent: 3226091 (1965-12-01), Root
patent: 3404696 (1968-10-01), Filho
patent: 4860777 (1989-08-01), Orlando
patent: 4875549 (1989-10-01), Denny et al.
patent: 4966181 (1990-10-01), Liberman et al.
patent: 4969500 (1990-11-01), Makosa
patent: 4981152 (1991-01-01), Laurent
Canfield Robert
Nirmel Chittaranjan N.
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