Portable observation structure

Claim 2

A portable observation structure removably attachable to a wheeled vehicle comprising two pairs of upright legs in a rectangular pyramidal arrangement with the bottom of each of said legs releaseably attachable to said vehicle, a first pair of legs attachable adjacent the rear of said vehicle and a second pair of legs attachable spacedly rearward of said first pair, lateral rungs connecting said first pair of legs, telescopic extensions of said second pair of legs adapted to selectively be extended to reach the ground on which said vehicle rests, said pyramidal arrangement having a seat member attached to the upper end thereof.

Claim 3

The structure of claim 1 which additionally comprises an upper ladder section joined to the top of said pyramidal arrangement by a pivotal connection to permit folding of said upper section against said pyramidal arrangement, said upper section comprising two legs and spaced lateral rungs, and a pivotable seat member on the upper end of said upper section adapted to be moved to an operable position as a seat or optionally folded against said upper section.

Claim 4

The structure of claim 2 wherein said pyramidal arrangement comprises a first pair of forward legs which are removably attached to a position forward of the rear portion of said vehicle and a second pair of rear legs which are removably attachable to, and overhang, the rear portion of said vehicle and contain internally said telescopic extensions which are adjustable lengthwise to rest firmly on the ground on which said vehicle rests.

Claim 5

The structure of claim 1 which additionally comprises a platform adjacent the upper end of said pyramidal arrangement and adjacent said seat member, said platform being attached to the upper ends of said pairs of legs and adapted to permit an observer to sit on said seat member or stand on said platform without moving said seat member.

Claim 6

The structure of claim 4 wherein said seat member is a swivel seat.

Claim 7

The structure of claim 1 which additionally comprises a flexible elongated member attached to said seat member and adapted to encircle a tree trunk and to clamp said tree trunk tightly to said structure.

Claim 8

A portable observation structure adapted to be removably attached to the rear portion of a single seat all-terrain wheeled vehicle; said structure comprising four generally vertical legs in a rectangular pyramidal arrangement with a first pair of legs being attachable to said vehicle adjacent the rear portion thereof and a second pair of legs being attachable to said vehicle spacedly rearward of said first pair of legs and rearward of said vehicle; a plurality of rungs laterally attached in spaced arrangement to said first pair of legs; an extension ladder section of two extension legs and laterally attached rungs, the bottom of said extension ladder section being attached pivotally to the top of said structure and adapted to lie against said first pair of legs when pivoted downwardly; a seat member attached to the upper ends of said extension legs and being selectively foldable against said extension legs or extended rearwardly at an angle from said extension legs; and a flexible belt member attachable to said seat member and adapted to encircle a tree trunk to clamp it tightly to said seat member.

Claim 9

A portable observation structure adapted to be removably attached to the rear portion of a single seat all-terrain wheeled vehicle; said structure comprising four generally vertical legs in a rectangular pyramidal arrangement with a first pair of legs being attachable to said vehicle adjacent the rear portion thereof and a second pair of legs being attachable to said vehicle spacedly rearward of said first pair of legs and rearward of said vehicle; a plurality of rungs laterally attached in spaced arrangement to said first pair of legs; an extension ladder section of two extension legs and laterally attached rungs, the bottom of said extension ladder section being attached pivotally to the top of said structure and adapted to lie against said first pair of legs when pivoted downwardly; a seat member attached to the upper ends of said extension legs and being selectively foldable against said extension legs or extended rearwardly at an angle from said extension legs; and a flexible belt member attachable to said seat member and adapted to encircle a tree trunk to clamp it tightly to said seat member.

Claim 10

The structure of claim 7 wherein said second seat member is foldable against said extension legs and adapted to form a back rest for the driver of said vehicle when said extension ladder is in the downwardly folded position.

Claim 11

The structure of claim 7 wherein said second pair of legs contains internal telescopically slideable extension legs sufficiently extendable to reach the ground upon which said vehicle rests and to provide partial support to said structure.

Claim 12

The structure of claim 9 wherein each of said pair of extension legs has a broad lateral ground engaging foot on the bottom thereof.

Claim 13

The structure of claim 7 which is adapted to be fastened to a luggage rack attached to the rear portion of said vehicle, said four legs being attached to said rack by U-bolt fastening means.

Claim 14

A portable observation structure adapted to be removably attached to the rear portion of a single seat all-terrain wheeled vehicle, said structure comprising four generally vertical legs in a rectangular pyramidal arrangement with a first pair of legs being attachable to said vehicle adjacent the rear portion thereof and a second pair of legs being attachable to said vehicle spacedly rearward of said first pair of legs and rearward of said vehicle; a plurality of rungs laterally attached in spaced arrangement to said first pair of legs; a pair of telescopically slideable legs inside said second pair of legs and adapted to be extended downwardly to reach the ground behind said vehicle and to provide support for said seat and stand; releaseable fastening means to join each of said telescopic legs respectively to each of said second pair of legs in a nonslideable position of selected length; a seat member attached to the top of said pyramidal arrangement and a horizontal platform rigidly attached to said four vertical legs spacedly below said seat and adapted to provide support for a standing observer.

Claim 15

A portable observation structure adapted to be removably attached to the rear portion of a single seat all-terrain wheeled vehicle, said structure comprising four generally vertical legs in a rectangular pyramidal arrangement with a first pair of legs being attachable to said vehicle adjacent the rear portion thereof and a second pair of legs being attachable to said vehicle spacedly rearward of said first pair of legs and rearward of said vehicle; a plurality of rungs laterally attached in spaced arrangement to said first pair of legs; a pair of telescopically slideable legs inside said second pair of legs and adapted to be extended downwardly to reach the ground behind said vehicle and to provide support for said seat and stand; releaseable fastening means to join each of said telescopic legs respectively to each of said second pair of legs in a nonslideable position of selected length; a seat member attached to the top of said pyramidal arrangement and a horizontal platform rigidly attached to said four vertical legs spacedly below said seat and adapted to provide support for a standing observer.

Claim 16

The structure of claim 12 wherein said seat member is a swivel seat.

Claim 17

The structure of claim 12 wherein each of said telescopically slideable legs has a broad ground engaging foot on the bottom thereof.

Claim 18

The structure of claim 12 wherein said releaseable fastening means is a spring clip with a pin adapted to slide through aligned holes in a leg of said second pair of legs and its internal telescopic slideable leg.