Haworth, Inc.

Paul F Franckowiak

Walter C Mrotz, Iii

A chair having a threaded spindle connected to the chair seat and projecting downwardly therefrom and being rotatably supported within the pedestal of a base. A load-released height-adjusting mechanism coacts between the pedestal and the spindle and includes a nut threadably mounted on the spindle and spring-urged upwardly for clutchable engagement with a clutch member which is nonrotatably and axially secured relative to the pedestal. The clutch member includes not only a top clutch plate positioned for engagement with the nut, but also an axially elongated sleeve portion which projects downwardly in surrounding relationship to the nut and is stationarily coupled to the pedestal by means of a bayonet-type coupling. The sleeve portion of the clutch member has a resilient locking finger which cooperates with the bayonet coupling for preventing relative rotation of the clutch member relative to the base after they have been coupled together.

Growing community of inventors

Grand Haven, MI, United States of America

Paul F Franckowiak