Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7676859 | Folding bed with scissors-type lifting arrangement The invention relates to a folding bed which is covered with a mattress (9) and comprises a head frame, back frame and foot frame (8, 7, 6) which are connected to one another in an articulated manner and are arranged in a collapsed state in a basic fra... | 03/16/2010 |
| 7549182 | Seating unit convertible to bed A seating unit includes: a frame; a backrest section having a backrest cushion; body, hinge and foot sections sharing a common cushion; and a folding mechanism comprising a series of pivotally interconnected links configured and arranged to move the backrest, body, ... | 06/23/2009 |
| 7451504 | Sofa sleeper with low-profile head rail This invention is directed to a sofa sleeper mechanism having a head section, a main middle section, a secondary middle section and a foot section. The head section has a head end and an end opposing the head end. The foot section has a foot end and an end opposing ... | 11/18/2008 |
| 7406727 | Foldable foundation for a mattress A foldable bedding foundation comprising a first section is hingedly secured to a second section so that the bedding foundation may be folded for storage or transportation purposes. Each section has base, a plurality of wire struts pivotally secured to the base, an ... | 08/05/2008 |
| 7376988 | Foldable bedding foundation A foldable bedding foundation comprising a first section is hingedly secured to a second section so that the bedding foundation may be folded for storage or transportation purposes. Each section has base, a plurality of wire struts pivotally secured to the base, an ... | 05/27/2008 |
| 7316039 | Fitted covering having diagonal elastic bands A fitted mattress covering for a mattress includes lower edge portions, which may be inverted J-shaped portions, mirror-image inverted J-shaped portions, portions that terminate at an end, or inverted U-shaped portions. The covering side and end portion lower edges ... | 01/08/2008 |
| 7219870 | Zero looseness fastener for linkage assembly A fastener is used to connect a first link to a second link in a vehicle seat assembly. The fastener has a head portion and a body portion extending outwardly from the head portion and defining an external diameter. The body portion is generally cylindrical and has ... | 05/22/2007 |
| 7220256 | Laser system and method for treatment of biological tissues A system for and method of performing laser assisted surgery is disclosed. Laser radiation is preferably delivered to a target area of tissue using a Er:YAG laser source. The laser radiation is delivered to the target area in bursts of laser radiation comprising set... | 05/22/2007 |
| 7188380 | Fabricated bedstead member This invention relates to a fabricated bedstead, in particular a fabricated bedstead that is applicable to a metal sofa bed or a bunk bed. The invention mainly comprises a bedstead that is made of different lengths of cannular shafts. The invention enables respectiv... | 03/13/2007 |
| 7188379 | Combination air and spring mattress for a sofa sleeper This invention is directed to a mattress assembly for use in a sofa sleeper. The mattress assembly has an outer shell and an inner support received within the outer shell. The shell includes a lower panel, a sidewall, and a cover that fit together to form a cavity t... | 03/13/2007 |
| 7127764 | Maternity air mattress with adjustable bellows system An improved multiple chambered maternity mattress (10) is specially configured to include a bellows (24) for providing fine-grained adjustability of size and firmness of its centrally disposed womb well region (AWW). The bellows (24) consisting ... | 10/31/2006 |
| 7120952 | Incontinence protective device Disclosed is a disposable fitted protective device that may be manufactured of antibacterial, ant-microbiodical and hypoallergenic material for bedding and furniture comprising an impermeable layer bonded to an absorbent fibrous layer. Each of the sides is folded to... | 10/17/2006 |
| 6934924 | Layout methodology and system for automated place and route A new simple novel Layout methodology for high integration VLSI chip is proposed, which is reduced dramatically the complexity, the cost and the schedule for implementing a complex chip such as System On a Chip (SOC) that required hierarchical layout implementation.... | 08/23/2005 |
| 6904628 | Convertible sofa-bed A sofa-bed has: a frame with opposing arms; a seat; a subseat hinged to the seat; a connecting rod that pivotally interconnects the subseat and the backrest; pairs of center legs and end legs pivotally attached to, respectively, the subseat and seat; and mechanisms ... | 06/14/2005 |
| 6678904 | Hinged link mattress deck A support deck for a sofa bed having a plurality of support members is interconnected at joints such that when a force is applied to one side of the deck the deck will yield but when a force is applied to the opposite side, the deck will be relatively res... | 01/20/2004 |
| 6665893 | Sofa sleeper with integral air mattress and valve This invention is directed to a mattress assembly for use in a sofa sleeper. The mattress assembly has a first mattress that has an inner-spring construction. Disposed above the first mattress is a second mattress that has an air bladder construction. The... | 12/23/2003 |
| 6463602 | Sofa bed comprising innovating mechanisms for position adjustment and quick assembly Sofa bed comprising innovating mechanisms for position adjustment and quick assembly. It comprises padding elements supported by two hinged frames and is characterised by a mechanism which allows the wheels of the front legs to touch the floor in both pos... | 10/15/2002 |
| 6035464 | Folding sofa bed frame structure with two-position TV headrest An arrangement for supporting, inclining, and reclining a rear section of a folding bed frame structure of a sofa bed includes a rear bed section; an intermediate bed section pivotally connected to the rear bed section; a slide link extending between and ... | 03/14/2000 |
| 5970537 | Folding bed frame structure and method of fabricating same A folding bed frame structure comprises spaced apart folding side frame assemblies connected with transversely extending cross members by a combination of mating frictionally interfitting "swaged" and tongue-and-slot connections which do not require or ut... | 10/26/1999 |
| 5903939 | Raised frame support for sofa-sleeper A sofa sleeper foldable sofa bed assembly having pivotally interconnected head, body, intermediate and foot frame sections each including a pair of opposed side rails. The frame sections are extendable to form a bed and foldable to form a sofa seat. The f... | 05/18/1999 |
| 5893182 | Combination item of furniture and foldable sleeper bed A combination ottoman, table or desk and a foldable sleeper bed comprises upper and lower wooden frame sections, the lower frame section being configured as an open top box, atop which the upper frame section is located. The two frame sections are interco... | 04/13/1999 |
| 5855030 | Folding sofa bed frame structure with two-position TV headrest A folding sofa bed frame structure has a TV control link and an associated toothed ratchet element connected thereto, by which the rear end section of the structure can be selectively positioned in two differing "TV" positions. A cam portion on the ratche... | 01/05/1999 |
| 5815857 | Sofa-bed A sofa-bed (1) is disclosed which comprises a fixed carrying structure (2), at least three movable frames (6, 7, 8) in engagement with each other in a consecutive rotatable manner and shiftable between a closed position and an open position, a kinematic d... | 10/06/1998 |
| 5745935 | Sinuous wire seat section sofa sleeper A sofa sleeper foldable sofa bed assembly having pivotally interconnected head, body, intermediate and foot frame sections which are extendable to form a bed and foldable to form a sofa seat. Each frame section has a pair of opposed side rails and the hea... | 05/05/1998 |
| 5740564 | Sofa having reclining section and foldable bed A furniture piece comprises: a sofa frame; a plurality of seating sections connected to and associated with the sofa frame, one of which is a reclining seating section; and a foldable bed. The configuration described hereinabove provides both reclining se... | 04/21/1998 |
| 5642536 | Foldable bed with collapsible sinuous springs and pivotable leg A foldable bed is movable between an unfolded position, in which interconnected seat, cavity, and body sections are substantially horizontally aligned and of substantially uniform depth, and a folded position, in which the body section is horizontally dis... | 07/01/1997 |
| 5588163 | Support deck for mattress or seat A support deck for a sofa bed having a plurality of support members interconnected at joints such that when a force is applied to one side of the deck the deck will yield but when a force is applied to the opposite side, the deck will be relatively unyiel... | 12/31/1996 |
| 5551104 | Collapsible sofa bed mattress A mattress of a sofa bed contains a portion which is collapsible and portions which are conventional and non-collapsible. The collapsible and non-collapsible portions are hinged to fold within a sofa bed frame.... | 09/03/1996 |
| 5539940 | Foldable sofa bed with collapsible sinuous springs A foldable bed is movable between an unfolded position, in which interconnected seat, cavity, and body sections are substantially horizontally aligned and of substantially uniform depth, and a folded position, in which the body section is horizontally dis... | 07/30/1996 |
| 5528777 | Sofa sleeper deck with transverse slats An improved sofa sleeper deck includes a number of pivotal transverse slats secured to a foldable frame. Each slat is pivotally coupled to a linkage so that the slats can pivot between vertical and horizontal orientations in the extended bed configuration... | 06/25/1996 |
| 5450637 | Folding sofa bed frame structure with movable mattress support bar A folding sofa bed frame having head, intermediate and foot bed sections pivotally connected end-to-end and constrained by a linkage arrangement to move in a predetermined pattern between a folded position and a horizontally extended position. A transvers... | 09/19/1995 |
| 5426796 | Support bar accessory for collapsible bed A removable support accessory (30) is positionable relative to one or more support bars (15, 16) of a bed frame (12) of a collapsible bed (10) to provide a substantially greater support base and more planar bed and seat support planes (23, 82). The suppor... | 06/27/1995 |
| 5414871 | Sofa sleeper deck with welded grid panels An improved sofa-sleeper deck includes a number of serially interconnected welded grid panels secured to a foldable bed frame. Each panel is hingedly interconnected to the adjacent panel to form the deck of a sofa-sleeper structure. Each welded grid panel... | 05/16/1995 |
| 5305479 | Sofa sleeper having sinuous spring reinforced shoulder area A sofa sleeper comprises a stationary wooden sofa frame and a foldable sofa bed assembly mounted to the frame which is adapted to move between a fully folded or retracted position within the frame to provide a seat when used as a sofa and an extended unfo... | 04/26/1994 |
| 5257424 | Foldable bed A foldable bed comprising a frame including a body section, a cavity section, a seat section, and a foot section, each of which includes a pair of side rails, each of which are pivotally interconnected and which are movable between an unfolded position an... | 11/02/1993 |
| 5231709 | Support deck for mattress or seat A support deck for a sofa bed having a plurality of wires arranged in a grid and being interconnected at grid intersections such that when a force is applied to one side of the deck the deck will yield but when a force is applied to the opposite side the ... | 08/03/1993 |
| 5138727 | Folding sofa bed frame structure with anti-topple linkage and movable mattress support bar A folding sofa bed frame having head, intermediate and foot bed sections pivotally connected end-to-end and constrained by a linkage arrangement to move in a predetermined pattern between a folded position and a horiziontally extended position. The linkag... | 08/18/1992 |
| 5129113 | System of fabric covering A fabric covering system for use with a hinge element of a convertible sofa bed a system includes a sofa base and sofa cushions having rigid bottom rotatably connected by hinge means to the top of a vertical front panel of a sofa. The fabric of the cushio... | 07/14/1992 |
| 5097544 | Convertible sofa bed A convertible sofa bed is disclosed which includes an improved folding bed mechanism which consists of a support section, intermediate section, a center section and a foot section all pivotally connected together by a linkage which permits the sections to... | 03/24/1992 |
| 5075909 | Anti-tilt sofa sleeper mechanism A foldable sofa sleeper mechanism having pivotally interconnected head, body, intermediate, and foot sections movable between a folded position in which the mechanism is contained within a storage enclosure of a sofa frame, and an extended unfolded positi... | 12/31/1991 |
