HEIGHT ADJUSTABLE BEAR FOR TRANSPORT AND RAISING OR LOWERING OF HEAVY BURDENS

摘要

There is level membrane plate (6) from material resistant to tension arranged between bottom (2) of case and elastomeric plate (3) and/or between lid (1) and elastomeric plate (4) concetric on the bottom of case (2) and/or on lid. This membrane plate (6) is longitudinally of its own periphery (6a) firmly and narrowly connected with bottom (2) of case or with lid (1).