Portable structure
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FIG. 1 is a front perspective view of a portable structure showing my new design;
FIG. 2 is a front elevational view thereof, the side opposite being the same;
FIG. 3 is a right side elevational view thereof, the side opposite being the same;
FIG. 4 is a top plan view thereof;
FIG. 5 is another front perspective view of the design shown in FIGS. 1-4 with the support bases in different positions;
FIG. 6 is a perspective view of the apex area of FIG. 5 shown on an enlarged scale;
FIG. 7 is a front elevational view of the design shown in FIG. 5, the side opposite being the same;
FIG. 8 is a right side elevational view thereof, the side opposite being the same;
FIG. 9 is a top plan view thereof;
FIG. 10 is a cross-sectional view thereof taken along line 10--10 in FIG. 9;
FIG. 11 is another front perspective view of the design shown in FIGS. 1-4 with the support bases in different positions;
FIG. 12 is a front elevational view of the design shown in FIG. 11, the side opposite being the same;
FIG. 13 is a right side elevational view thereof, the side opposite being the same;
FIG. 14 is a top plan view thereof;
FIG. 15 is a perspective view of the design shown in FIGS. 1-4 in a partially collapsed condition;
FIG. 16 is a perspective view thereof in another partially collapsed condition;
FIG. 17 is a perspective view thereof in a similar position;
FIG. 18 is a perspective view thereof in a transitory position;
FIG. 19 is another similar perspective view thereof;
FIG. 20 is another perspective view thereof in a further transitory condition;
FIG. 21 is another perspective view thereof in a collapsed position;
FIG. 22 is a cross-sectional view thereof taken along line 22--22 in FIG. 9 shown on an enlarged scale;
FIG. 23 is a front perspective view of a modified embodiment of the design shown in FIGS. 1-4;
FIG. 24 is a front perspective view of another modified embodiment of the design shown in FIGS. 1-4; and
FIG. 25 is another perspective view thereof showing the base supports in other positions.
1352032 | September 1920 | Sherman |
2434251 | January 1948 | Warnke |
3675667 | July 1972 | Miller |
3699986 | October 1972 | Kirkham |
3856029 | December 1974 | Auddle |
3960161 | June 1, 1976 | Norman |
3965915 | June 29, 1976 | Kirkham |
3990463 | November 9, 1976 | Norman |
4154253 | May 15, 1979 | McCullough |
4195651 | April 1, 1980 | Watts et al. |
4236543 | December 2, 1980 | Moss |
4269210 | May 26, 1981 | Marks |
4858634 | August 22, 1989 | McLeese |
Type: Grant
Filed: Feb 29, 1988
Date of Patent: Jul 30, 1991
Assignee: Pure Concepts, Inc. (Pasadena, CA)
Inventor: Lowell R. Norman (Montrose, CA)
Primary Examiner: Charles A. Rademaker
Attorney: F. Eugene Logan
Application Number: 7/162,366