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Class Information
Number: 5/51.1
Name: Beds > Sofa bed > Bed element
Description: Device relating to a specific item of structure which forms a portion of a sofa bed.

Sub-classes under this class:

Class Number Class Name Patents
5/56 Assisting spring 4
5/54 Front board 3
5/53.1 Headboard or footboard 82
5/57.1 Hinge 6
5/55.1 Latch 11
5/58 Receptacle, drawer, or compartment 31
5/59.1 Shiftable back or seat 17
5/52 Sofa head and arm rest 23

Patents under this class:

Patent Number Title Of Patent Date Issued
7962975 Mechanism for mounting a foldable-bed unit in an article of furniture Jun. 21, 2011
5528777 Sofa sleeper deck with transverse slats Jun. 25, 1996
5038422 Support structure for sofa beds, with pull-out, raisable auxiliary bed Aug. 13, 1991
4625346 Three portion seat-bed for recreational vehicles Dec. 2, 1986
4612677 Convertible sofa mechanism Sep. 23, 1986
4575883 Convertible sofabed with improved user comfort Mar. 18, 1986
4541133 Sofa bed Sep. 17, 1985
4509216 Sofa bed mechanism Apr. 9, 1985
4435860 Spring suspension for sofa-bed Mar. 13, 1984
4176414 Sofa-sleeper Dec. 4, 1979
4068328 Convertible furniture Jan. 17, 1978
4045829 Sofa bed assembly Sep. 6, 1977
3952344 Pull-out folding sofa beds Apr. 27, 1976
3934281 Mattress compression linkage for convertible sofa-bed Jan. 27, 1976

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