Ladder
OwnerJohn Onderwaterinventor
Life of this patent
Estimating the term…
Abstract
A ladder having a frame with three leg members wherein the leg members are adjustable in length so as to provide a level orientation of the ladder subsequent the ladder being superposed an uneven support surface. The frame includes two rear leg members and a front leg member having a platform member operably coupled to the top thereof. The front leg member is hingedly secured to the platform member and movable between a deployed and stored position. The three leg members include an upper portion and a lower portion wherein the lower portion is slidably engaged with the upper portion. A clamp member is disposed in each of the three leg members and is configured to operably engage a portion of the lower portion of each of the three leg members. The clamp member includes opposing jaw members with a void therebetween.
Claims19
A ladder configurable to provide a level orientation for a user thereof during the ladder being superposed on an uneven support surface wherein the ladder comprises:
- a frame, said frame including a front leg member, a first rear leg member and a second rear leg member, said front leg member having an upper end and lower end, said first rear leg member having an upper end and a lower end, said second rear leg member having an upper end and a lower end, said frame further including a platform member, said platform member being operably coupled to the upper end of the front leg member, first rear leg member and second rear leg member, said front leg member being hingedly secured to said platform member, wherein the front leg member, first rear leg member and second rear leg member further include an upper portion and a lower portion, the lower portion of at least the front leg member, first rear leg member or second rear leg member being movably coupled with the upper portion of the front leg member, first rear leg member and second rear leg member;
- a plurality of step members, said step members being operably coupled between said first rear leg member and said second rear leg member, said plurality of step members being perpendicular to the first rear leg member and second rear leg member;
- and
- at least one clamp member, said at least one clamp member being disposed in either the front leg member, first rear leg member or second rear leg member, said at least one clamp member operable to provide control of the lower portion of either the front leg member, first rear leg member or second rear leg member with respect to the upper portion of either the front leg member, first rear leg member or second rear leg member wherein movement of the lower portion of either the front leg member, first rear leg member or second rear leg member provides adjustment of the ladder and a level orientation thereof.
A ladder configured to allow adjustment of the leg members thereof so as to ensure a level orientation for a user superposed thereon wherein the ladder comprises:
- a frame, said frame being manufactured from a rigid lightweight metal or wood;
- a first rear leg member, said first rear leg member having an upper portion and a lower portion;
- a second rear leg member, said second rear leg member having an upper portion and a lower portion, said lower portion of said second rear leg member being slidably coupled with said upper portion of said second rear leg member, said second rear leg member having a clamp member disposed in the upper portion thereof, said clamp member of said second rear leg member configured to provide adjustment of an overall length of said second rear leg member;
- a front leg member, said front leg member having an upper portion and a lower portion, said lower portion of said front leg member being slidably coupled to said upper portion of said front leg member, said front leg member having a clamp member disposed in the upper portion thereof, said clamp member of said front leg member configured to operably engage said lower portion of said front leg member, said lower portion of said front leg member movable so as to alter an overall length of said front leg member;
- and
- a plurality of step members, said step members being operably coupled between said first rear leg member and said second rear leg member, said plurality of step members being perpendicular to the first rear leg member and second rear leg member.
The ladder configured to allow adjustment of the leg members as recited in claim 12, and further including a first level and a second level, said first level and said second level being secured to said frame, said first level and said second level configured to provide visual confirmation of level orientation of the ladder.
Dependencies are inferred from the claim text.