Base plane e.g. ground, unevenness compensating device for e.g. ladder, has rigid tube projecting outside arched tube, right sliding leg placed in retracted position in arched tube, and left sliding leg maintained in release position

摘要

#CMT# #/CMT# The device has a flexible coupling unit housed in sliding manner inside an arched tube (6) fixed to or made a part of a structure of a support. A rigid elongated and reinforced tube (11) projects outside the arched tube in a lower part of the support in order to be supported on an uneven ground (3) or an elevation (7) in the ground. A right sliding leg (4) is placed in retracted position in the arched tube, and a left sliding leg (5) is maintained in release position until contacting with a base level of the ground. #CMT#USE : #/CMT# Used for compensating an unevenness of a base plane e.g. ground, floor and other surfaces presenting a displacement or height inequality, for a mobile or displaceable work support e.g. ladder, steps, wheelbarrow, scaffold upright (claimed), seat, working platform, running board, trestle, furniture, workbench, table, chair, bench and footstool, at building sites. #CMT#ADVANTAGE : #/CMT# The device allows automatic compensating of the unevenness in the base plane without manual intervention of the user, thus ensuring better and perfect stability to the support in use or rest position and ensures safety to the users. The device is simple in design and requires reduced number of components in order to reduce the fabrication time and the installation time of the device. The device increases the life duration of the ladder even in real use conditions at the building sites. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a perspective overview of a ladder equipped with a base plane unevenness compensation device. 1 : Ladder 2 : Base plane unevenness compensating device 3 : Uneven ground 4 : Right sliding leg 5 : Left sliding leg 6 : Arched tube 7 : Ground elevation 9, 10 : Ladder legs 11 : Rigid elongated and reinforced tube #CMT#METALLURGY : #/CMT# The rigid elongated and reinforcement tube is made of metal such as aluminum. #CMT#POLYMERS : #/CMT# The flexible coupling unit is made of polyethylene terephtalate (PET). The rigid elongated and reinforcement tube is made of high density polymer and presents an internal lining or inner tube formed of polyvinyl chloride (PVC). A protective cap of the compensation device is formed of non-skid plastic material.