Adjustable pedestal trestle for theater stages or the like
OwnerHans-Jochen Eisenberginventor
Life of this patent
Estimating the term…
Abstract
A vertically adjustable pedestal trestle for theater stages or the like which includes a platform carried by a top frame and lockable supporting scissors are articulated to corners of the top frame as well as a vertical adjustment device which may be driven by motor power or manually. The vertical adjustment device includes one or more additional lifting scissors arranged centrally below the platform. The lifting scissors are provided at respective leg ends with runners or sliding elements and are adapted to be extended toward the underside of the platform.
Claims18
An adjustable pedestal trestle comprising a top frame means, a platform carried by said top frame means, and four supporting scissors means each having at least three legs, one leg of each of said four supporting scissors means is connected to a corner area of the top frame means for supporting the platform equally in a raised in-use position, characterized in that means are provided for vertically lifting the platform including at least one lifting scissors means arranged centrally below the platform within an area defined between the four supporting scissors means, said lifting scissors means being extensible in a direction toward and away from an underside of the platform, in that means are provided for locking the supporting scissors means in an adjusted raised in-use position so as to enable the lifting scissors means to be moved in a direction away from the underside of the platform in the raised in-use position, and in that means are provided for driving the lifting scissors means.
An adjustable pedestal trestle comprising a top frame means, a platform carried by said top frame means, and a supporting scissors means connected to the top frame means for supporting the platform in a raised position, wherein means are provided for vertically adjusting the platform including at least one lifting scissors means arranged centrally below the platform and being extensible in a direction toward an underside of the platform, means are provided at respective ends of the lifting scissors means for guiding a movement of the scissors means, means are provided for locking the supporting scissors means in an adjusted raised position including spring loaded detent means arranged at an upper end of the supporting scissors means, means are provided in the top frame means for accommodating the detent means, and in that means are provided for temporarily retaining and locking the detent means in an unlocked condition of the supporting scissors means.
Dependencies are inferred from the claim text.