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Class Information
Number: 5/17
Name: Beds > Sofa bed > Extension
Description: Devices characterized by one or more bed sections which move out forwardly or backwardly without overturning. Extension sofa beds are mainly of a couch type without back or stuffed ends and resemble a bedstead with very low head and foot boards.

Sub-classes under this class:

Class Number Class Name Patents
5/22 Link walk-over 2
5/18.1 Slidable section 87
5/23 Traversing seat with rotary follower section 2

Patents under this class:

Patent Number Title Of Patent Date Issued
8555431 Linear actuator device Oct. 15, 2013
8468621 Adjustable furniture product with automatically-inflating mattress Jun. 25, 2013
8464370 Convertible furniture item Jun. 18, 2013
8365322 Multi-position remote latching mechanism Feb. 5, 2013
8365245 Previous password based authentication Jan. 29, 2013
6848127 Folding sofa bed Feb. 1, 2005
6668394 Convertible couch bed Dec. 30, 2003
5970538 Pantographic support control mechanism Oct. 26, 1999
5681164 Orthodontic appliance Oct. 28, 1997
5195193 Sofa with traversable seat support frame for conversion to a single bed Mar. 23, 1993
5101524 Sofa-platform bed Apr. 7, 1992
5023966 Piece of furniture Jun. 18, 1991
4825483 Sofa which can be converted to a bed May. 2, 1989
4672696 Convertible sitting/reclining furniture article Jun. 16, 1987
4601074 Furniture, particularly upholstered furniture, for transferring from a sitting position to a lying position Jul. 22, 1986
4539722 Sofa-bed-dining table combination Sep. 10, 1985
4480344 Divan-bed Nov. 6, 1984
4406027 Articulated framework for bed, relaxation seat or armchair Sep. 27, 1983
4402096 Folding bed chair with detachable cushions Sep. 6, 1983
4292697 Furniture for sitting and reclining Oct. 6, 1981
4212090 Ottoman convertible Jul. 15, 1980
4123811 Convertible sofa bed and cover Nov. 7, 1978
4031577 Convertible sofa bed Jun. 28, 1977

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