Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
137 words
A convertible bed (10) characterised by a main frame (16) supported on legs (12) and extending generally between the head and foot of the bed, a movable frame (20) supported on the main frame (16) and movable longitudinally relative thereto between a first position defining a bed configuration and a second position defining a chair configuration, an upper body portion (22) of the movable frame (20) being pivotable between a generally horizontal attitude in the bed configuration and a nearly vertical attitude serving as a chairback in the chair configuration and a lower body portion (24) of the movable frame being flexible longitudinally of the bed and there being provided a mechanism for drawing the foot end (32) of the flexible portion (24) of the movable frame (20) back under the bed (10) in the chair configuration.
Claim 2
Dependent Claim
137 words
A convertible bed (10) characterised by a main frame (16) supported on legs (12) and extending generally between the head and foot of the bed, a movable frame (20) supported on the main frame (16) and movable longitudinally relative thereto between a first position defining a bed configuration and a second position defining a chair configuration, an upper body portion (22) of the movable frame (20) being pivotable between a generally horizontal attitude in the bed configuration and a nearly vertical attitude serving as a chairback in the chair configuration and a lower body portion (24) of the movable frame being flexible longitudinally of the bed and there being provided a mechanism for drawing the foot end (32) of the flexible portion (24) of the movable frame (20) back under the bed (10) in the chair configuration.
Claim 3
Dependent Claim
71 words
A convertible bed (10) according to claim 1, wherein a roller (34) is mounted at the foot of the bed to guide the flexible portion (24) of the movable frame (20) between a position withdrawn under the bed when the movable frame (20) is in the position of the chair configuration and a flat position along the foot of the bed when the movable frame (20) is in the bed configuration.
Claim 4
Dependent Claim
70 words
A convertible bed according to claim 2, wherein the movable frame comprises a movable carriage (30) and the flexible portion , (24) of the movable frame comprises a plurality of slats (32) extending transversely of the bed, the slats (32) being flexibly coupled together and being attached to an adjacent end of the carriage (30) by flexible tensile members (90) extending over the roller (34) and back underneath the bed.
Claim 5
Dependent Claim
65 words
A convertible bed according to claim 3, wherein the flexible tensile members (90) extend underneath the bed along substantially the full length thereof, over rotatable drive members (92, 94) adjacent the head of the bed, and back to the vicinity of the movable carriage (30), the remaining ends of the tensile members (90) being secured to the remaining end of the carriage (30 at A).
Claim 6
Dependent Claim
88 words
A convertible bed according to claim 3 or claim 4, wherein the movable carriage (30) has a plurality of wheels (31) mounted for rolling along upper supporting surfaces (62a) of the main frame (16 on 62), and wherein the tensile members (90) comprise a pair of sprocket chains (90) extending along opposite sides of the bed and over the roller (34) at the foot of the bed, the slats (32) being coupled to individual links in the respective sprocket chains (90) at opposite ends of the slats (32).
Claim 7
Dependent Claim
46 words
A convertible bed according to any one of claims 1 to 5 including mechanism (47, 80, 192) for selectively varying the elevation of the foot of the bed to provide assistance to the occupant of the chair configuration in raising himself to a standing erect position.
Claim 8
Dependent Claim
43 words
A convertible bed of claim 6, wherein the sprocket chains (90, 92, 94, 96) are operable to drive the movable frame (20) beyond the second position as the foot of the bed is being elevated to further assist the occupant to stand erect.
Claim 9
Dependent Claim
56 words
A convertible bed according to any one of claims 1 to 7, wherein an inflatable pillow (192) is mounted on the seat of the convertible bed in the chair configuration and a blower (190) is provided for selectively inflating the pillow to assist the patient in rising to a standing position when the chair is elevated.
Claim 10
Dependent Claim
70 words
A convertible bed according to any one of claims 1 to 8, wherein the main frame has a pair of siderails (62) and a pair of inner rails (52) secured to a pair of cross rails (54, 56) in a box-like configuration and a spinal massage apparatus (110) is mounted on the inner rails (52) and selectively movable longitudinally thereof to massage the back of the patient in the bed.
Claim 11
Dependent Claim
73 words
A convertible bed according to claim 9, wherein a pair of sprocket chains (120) extends longitudinally along the inner rails between sprockets (122) on a pair of cross shafts (124) mounted respectively adjacent the foot portion and the head portion of the bed with opposite ends of the sprocket chains being coupled to the side frames (112) of the apparatus for driving the spinal massage apparatus back and forth longitudinally of the bed.
Claim 12
Dependent Claim
66 words
A convertible bed according to any one of claims 1 to 10 having separate mechanisms (70, 74, 78, 80) for elevating the head and foot of the bed independently and further having means (228) for controlling the separate elevating mechanisms (70, 74, 78, 80) to rock the bed by alternately raising and lowering the head and foot of the bed in opposed synchronism with each other.