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Class 297/263.2 - Having anti-friction means to facilitate rotation


Subclass of Class 297 - Chairs and seats
Definition: Device provided with roller means (e.g., roller, ball bearing)
No. of patents: 3
Last issue date: 02/16/1993


NumberTitleIssue Date
5186424Base for a human support apparatus
A base for a human support apparatus such as a bed or a chair which produces a rocking chair type of motion. The base also includes a motor which when driven simultaneously moves the bed or chair in a circular motion within a horizontal plane....
02/16/1993
4536029Rocking chair
A rocking chair whose rocking action is achieved solely through a linkage mechanism rather than rocking cams conventionally employed. The chair includes upholstered seat, backrest and armrests which are united in a one-piece structure mounted on a fixed b...
08/20/1985
3938857Rocker spring unit
A rocker spring unit utilizes separately formed rocker elements and outboard rocker springs. The rocker springs and rocker elements are assembled with two plate members having the rocker springs extended between opposite plate member edges and the rocker ...
02/17/1976
 
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