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Class Information
Number: 5/13
Name: Beds > Sofa bed > Link supported unfolding
Description: Devices including unfolding link-supported bed bottom not falling precisely under any of the following subclasses.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8468621 Adjustable furniture product with automatically-inflating mattress Jun. 25, 2013
8225438 Seating unit convertible to bed Jul. 24, 2012
8201290 Convertible sofa with contained air mattress Jun. 19, 2012
7802329 Folding seat-bed frame Sep. 28, 2010
7676859 Folding bed with scissors-type lifting arrangement Mar. 16, 2010
7549182 Seating unit convertible to bed Jun. 23, 2009
7451504 Sofa sleeper with low-profile head rail Nov. 18, 2008
7406727 Foldable foundation for a mattress Aug. 5, 2008
7376988 Foldable bedding foundation May. 27, 2008
7188379 Combination air and spring mattress for a sofa sleeper Mar. 13, 2007
6678904 Hinged link mattress deck Jan. 20, 2004
6665893 Sofa sleeper with integral air mattress and valve Dec. 23, 2003
6463602 Sofa bed comprising innovating mechanisms for position adjustment and quick assembly Oct. 15, 2002
6035464 Folding sofa bed frame structure with two-position TV headrest Mar. 14, 2000
5970537 Folding bed frame structure and method of fabricating same Oct. 26, 1999
5903939 Raised frame support for sofa-sleeper May. 18, 1999
5893182 Combination item of furniture and foldable sleeper bed Apr. 13, 1999
5855030 Folding sofa bed frame structure with two-position TV headrest Jan. 5, 1999
5815857 Sofa-bed Oct. 6, 1998
5745935 Sinuous wire seat section sofa sleeper May. 5, 1998
5740564 Sofa having reclining section and foldable bed Apr. 21, 1998
5642536 Foldable bed with collapsible sinuous springs and pivotable leg Jul. 1, 1997
5588163 Support deck for mattress or seat Dec. 31, 1996
5551104 Collapsible sofa bed mattress Sep. 3, 1996
5539940 Foldable sofa bed with collapsible sinuous springs Jul. 30, 1996
5528777 Sofa sleeper deck with transverse slats Jun. 25, 1996
5450637 Folding sofa bed frame structure with movable mattress support bar Sep. 19, 1995
5426796 Support bar accessory for collapsible bed Jun. 27, 1995
5414871 Sofa sleeper deck with welded grid panels May. 16, 1995
5305479 Sofa sleeper having sinuous spring reinforced shoulder area Apr. 26, 1994
5257424 Foldable bed Nov. 2, 1993
5231709 Support deck for mattress or seat Aug. 3, 1993
5138727 Folding sofa bed frame structure with anti-topple linkage and movable mattress support bar Aug. 18, 1992
5129113 System of fabric covering Jul. 14, 1992
5097544 Convertible sofa bed Mar. 24, 1992
5075909 Anti-tilt sofa sleeper mechanism Dec. 31, 1991
5020170 Bed for immobile patients Jun. 4, 1991
4985945 Double-lock sofa sleeper mechanism Jan. 22, 1991
4928331 Adjustable seat pitch sofa sleeper mechanism May. 29, 1990
4918770 Sofa bed with closing and opening assist Apr. 24, 1990
4905328 Sofa-bed assembly Mar. 6, 1990
4858258 Mattress and supporting structure therefor Aug. 22, 1989
4850065 Sofa bed mechanism with safety lock out feature Jul. 25, 1989
4800598 Anti-tilt sofa sleeper mechanism Jan. 31, 1989
4780918 Sofa bed with friction stop Nov. 1, 1988
4777677 Mattress pad and fitted bed sheet for foldable sofa bed mattresses Oct. 18, 1988
4768253 Sleeper sofa mattress Sep. 6, 1988
4754505 Foldable mattress support with supplemental back spring Jul. 5, 1988
4752976 Sofa sleeper having improved mattress supporting surface Jun. 28, 1988
4700414 Sofa-sleeper having a snap-in bottom-loading sofa bed mechanism Oct. 20, 1987

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