Portable observation stand

Claim 2

A portable observation stand comprising, a ladder formed of upper and lower ladder sections pivotally interconnected at adjacent ends for movement between a folded position and an extended position in end-to-end relation, a seat pivotally mounted on the upper ladder section and movable between a storage position and an operative position wherein said seat extends rearwardly only from said upper ladder section to be in unobstructing relation with the ladder section for climbing thereof, a foot-support member pivotally mounted to said upper ladder section, and means interconnecting said seat and foot-support member for simultaneous pivoting movement.

Claim 3

A portable observation stand as defined in claim 1 wherein said interconnecting means comprises a linkage structure with pivotally interconnected links and certain of said links provide a frame for support of a weather protection shroud.

Claim 4

A portable observation stand comprising, a ladder having upper and lower ladder sections with side rails and a series of rungs on at least said lower section, means interconnecting said ladder sections for movement between a folded position in overlapped relation and an operative position with the ladder sections in end-to-end relation, a planar foot member pivotally connected to the side rails of the upper ladder section, a seat pivotally connected to the side rails of the upper ladder section, said foot member and seat having their pivotal connections related whereby said seat is disposed rearwardly of and above said foot member when the ladder is in operative position with major parts of each being to the rear of said side rails to permit a person climbing the ladder to easily reach said seat, and a plural link structure interconnecting the seat and the foot member for simultaneous movement between a position substantially paralleling said side rails and an operative position at a substantial angle thereto with two pairs of said links being pivotally interconnected and pivotally connected one pair to each side rail and a seat edge and in a straight-line relation when said seat is in operative position to support the weight of an occupant of the seat and hold the seat and foot member in operative position.

Claim 5

A portable observation stand comprising, a ladder having upper and lower ladder sections with side rails and a series of rungs on at least said lower section, means interconnecting said ladder sections for movement between a folded position in overlapped relation and an operative position with the ladder sections in end-to-end relation, a planar foot member pivotally connected to the side rails of the upper ladder section, a seat pivotally connected to the side rails of the upper ladder section, said foot member and seat having their pivotal connections related whereby said seat is disposed rearwardly of and above said foot member when the ladder is in operative position with major parts of each being to the rear of said side rails to permit a person climbing the ladder to easily reach said seat, and a plural link structure interconnecting the seat and the foot member for simultaneous movement between a position substantially paralleling said side rails and an operative position at a substantial angle thereto with two pairs of said links being pivotally interconnected and pivotally connected one pair to each side rail and a seat edge and in a straight-line relation when said seat is in operative position to support the weight of an occupant of the seat and hold the seat and foot member in operative position.

Claim 6

A portable observation stand as defined in claim 3 including latch means to hold said pairs of links in said straight-line relation.

Claim 7

A portable observation stand as defined in claim 3 wherein said foot member has a part extended forwardly of said side rails of the upper ladder section when in operative position, and said part being hinged to the remainder thereof for movement to a position overlapping said remainder to avoid obstruction of a person climbing the ladder.

Claim 8

A portable observation stand as defined in claim 5 wherein said seat is pivotally connected to said side rails at the front of said seat whereby the entire seat is located to the rear of the side rails when in operative position.

Claim 9

A portable observation stand comprising, a ladder having upper and lower ladder sections with side rails and a series of rungs on at least said lower section, means interconnecting said ladder sections for movement between a folded position in overlapped relation and an operative position with the ladder sections in end-to-end relation, a planar foot member pivotally connected to the side rails of the upper ladder section, a seat pivotally connected to the side rails of the upper ladder section, said foot member and seat having their pivotal connections related whereby said seat is disposed rearwardly of and above said foot member when the ladder is in operative position with major parts of each being to the rear of said side rails to permit a person climbing the ladder to easily reach said seat, and a plural link structure interconnecting the seat and the foot member for simultaneous movement between a position substantially paralleling said side rails and an operative position at a substantial angle thereto.

Claim 10

A portable observation stand comprising, a ladder having upper and lower ladder sections with side rails and a series of rungs on at least said lower section, means interconnecting said ladder sections for movement between a folded position in overlapped relation and an operative position with the ladder sections in end-to-end relation, a planar foot member pivotally connected to the side rails of the upper ladder section, a seat pivotally connected to the side rails of the upper ladder section, said foot member and seat having their pivotal connections related whereby said seat is disposed rearwardly of and above said foot member when the ladder is in operative position with major parts of each being to the rear of said side rails to permit a person climbing the ladder to easily reach said seat, and a plural link structure interconnecting the seat and the foot member for simultaneous movement between a position substantially paralleling said side rails and an operative position at a substantial angle thereto.