Steelcase Inc.

Other

Douglas A Smith

Robert M Scheper

Dale M Groendal

Brian L Scholten

Charles P Roossien

James Edward Abraham

James E Massey

Thomas R Hahn

David C Pugh

Bruce M Smith

Duane F Nagel

Cheryl D Baumgartner

James P Steffens

Daniel P Beemer

Charles W Ulmer, Ii

A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user. The chair includes side arms that laterally and then rotatably engage side arm supporting connectors on the chair to facilitate assembly. The chair further includes a one-piece shell having tabs for mateably engaging flanges on the chair seat and back to also facilitate assembly.

Chair construction and method of assembly

A chair includes a base, a chair control and tilt mechanism, a shell assembly and a cushion assembly. The shell assembly includes a seat shell fixed to the base and a separate back shell. The back shell and seat shell are interconnected by a mechanical hinge. The hinge includes a pair of tabs on the back shell received in sockets defined by the seat shell. The tabs are retained in the sockets by the chair base. Back supports or chair arms have ends operatively connected to the tilt mechanism. Opposite ends of the arms are secured to the seat back to support and guide the back during tilting movement. The cushion assembly includes a molded foam member having a fabric or other upholstery material joined thereto. The back shell includes an integral, hinged upholstery flap. The fabric of the cushion assembly is folded over and joined to the flap. The flap is folded and operatively connected to a rear surface of the back shell. The seat shell includes another integral upholstery attachment flap. The flaps provide a finished edge for the upholstery. The back shell defines grooves within which lateral edges of the cushion assembly upholstery material are retained.

Upholstered chair with two-piece shell

A high impact polymer comprising repeating monomer units of the formula: ##STR1## wherein R.sub.2 and R.sub.2 are substituents selected from the group consisting of hydrogen, an alkyl group, an aryl ring and a group promoting hydrogen bonding with a hydrogen atom of a phenyl ring, at least one of R.sub.1 and R.sub.2 being from the group promoting hydrogen bonding.

Impact resistant polymers based on bisphenol-A-polycarbonate

A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user.

Chair with zero front rise control

Chair

A structural support shell for a tilt-back chair has a back portion, a seat portion, and a flexible compression zone extending between the back and seat portions in an integrally molded, one-piece unit. The chair has a base with a recline control and pivoting recline control lever. The seat portion of the shell is fixed to the base and the back portion of the shell is fixed to the recline control lever. The flexible compression zone provides a simplified construction for an ergonomic chair design having an effective axis of rotation between the back portion and seat portion which is located above the seat portion, forward of the back portion, and generally adjacent to the hip joints of a seated user.

A vertically oriented fuel bed elongate in the vertical direction provides a vertical radiant source of heat for cooking food in cooking zones on either side of the bed. A portable and collapsible grill frame is formed by light weight end rods and elongate cross rods assembled in three tiers, a top tier, a lower tier, and base level. The vertical radiant heat source is supported in the center of the frame removeably suspended from the top tier without extending below the lower tier. An ash tray is removeably suspended from the lower tier below the fuel bed and above the base level. First and second drip trays are removeably suspended from the lower tier below the cooking zones on either side of the ash tray. The ash tray and drip trays form a substantially continuous surface across the grill frame for reflecting heat upward and protecting a surface on which the grill may be placed. A plurality of removeable and replaceable panels provide greater or lesser enclosure of a cooking zone. The end rods and elongate cross rods are releaseably coupled by complementary slots formed by crimps and folds in the rods.

Growing community of inventors

Grand Rapids, MI, United States of America

Douglas A Smith