Ram Machines (1990) Ltd.

Global Total Office, an Ontario Limited Partnership Having Global Upholstery Co. Inc. As Its General Partner

Vaclav Pernicka

Michael Shats

William S Stumpf

A seating apparatus has a support element having an upright extending from a floor and a swing arm pivotably mounted to the upright about a generally vertical pivot axis. A work surface is secured to the upright above the swing arm, and a seat is mounted on the swing arm, the seat having a seat base upon which an occupant can be seated. The swing arm is pivotable between a stowed position wherein the seat base is tucked substantially underneath the work surface, and a deployed position wherein the seat base is substantially clear of the work surface. The seating apparatus is also provided with a flat coiled torsion spring for biasing the arm to the stowed position, the torsion spring having a first end fixed directly or indirectly to the upright and a second end fixed directly or indirectly to the swing arm.

Auditorium seating

A mechanism for adjusting the height of a chair back relative to the seat includes an arm that extends upwardly from the rear of the seat, and a carriage that is carried by the back and slidably mounted on the arm. A pinion inside the carriage engages a rack on the arm so that the pinion travels along the rack when the chair back is moved up and down on the arm. A pawl engages the pinion when the chair back is moved upwardly so as to allow incremental adjustment in the height of the back in the upward direction, while preventing downward movement of the back. When the back reaches the upper limit of its travel, an actuator spring is displaced downwardly, disengaging the pawl so that the back is free to slide on the arm. At the bottom of the limit of travel, the spring is displaced upwardly, re-engaging the pawl.

Chair back height-adjustment mechanism

A chair control mechanism having compressible lamellas which when compressed lock a chair back and/or seat in position and when decompressed allow adjustment of the chair seat and/or back, and housing a releasable lock to compress and decompress the lamellas. The lock includes a U-shaped slide member slidable on the same shaft as that on which the lamellas are mounted, and having its cross member pressed against the lamellas and its free ends projecting through slots in a housing side wall. A coil spring between the side wall and connecting member biases the slide member against the lamellas to compress them. A cam connected to the legs of the slide member outside the side wall is moveable to pull the slide member outwardly through the side wall to release the pressure on the lamellas.

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Brampton, Canada

Vaclav Pernicka