Backrest for a seat arrangement
OwnerOtto W. Zapfinventor
Life of this patent
Estimating the term…
Abstract
A backrest for a seat includes an upper back portion having an integral, central extension, a lower back portion having a central cut-out, and hinges for pivotally connecting the upper and lower back portions together to permit free swinging movement of the extension through the cut-out about a pivot axis situated at a level above the extension so that substantially the entire extension can come out of the cut-out in a reclined position of the upper back portion to support the lower back of the seat occupant. The extension may be provided with a central recess separating two lateral prongs from one another, and an elastic band may then be used to span the recess between the prongs.
Claims20
A backrest for a seat, comprising, as considered in a position of use thereof:
- a) a lower stationary back portion having a pair of side parts with upper edges, and a central cut-out depending from said upper edges between said side parts;
- b) an upper movable back portion having a pair of side sections with lower edges, and an integral central extension depending from said lower edges between said side sections;
- and
- c) means at and extending across respective interspaces existing between said upper and lower edges at an elevation above said extension for connecting said side sections of said upper back portion and said side parts of said lower back portion with one another for pivoting of said movable upper back portion relative to said stationary lower back portion about a pivot axis extending transversely above said extension from a first position in which said extension is fully received within said cut-out to a second position in which said extension is located substantially entirely outside said cut-out and frontwardly of said lower back portion in a supporting relationship with the lower back of an occupant sitting on the seat.
Dependencies are inferred from the claim text.