Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
Adjustable bed comprising an under-mattress consisting of a rigid frame, on which a head end part and a foot end part are pivotally fastened individually between the ends and over which a top mattress can be laid, while each end part is provided with a raising device adapted to be driven by a device with the aid of an operating rod for the purpose of adjusting the inclination of the end part, characterized in that one drive device (15, 16) is provided for the two end parts (3, 4), and that one raising device (6) is connected to the operating rod (13) for direct movement and the other (7) is connected to said rod for movement via a lost-motion mechanism (23, 24), in such a manner that one end part can first be raised, while the other end part is raised by continuing the operation of the drive device.
Claim 2
Dependent Claim
149 words
Adjustable bed comprising an under-mattress consisting of a rigid frame, on which a head end part and a foot end part are pivotally fastened individually between the ends and over which a top mattress can be laid, while each end part is provided with a raising device adapted to be driven by a device with the aid of an operating rod for the purpose of adjusting the inclination of the end part, characterized in that one drive device (15, 16) is provided for the two end parts (3, 4), and that one raising device (6) is connected to the operating rod (13) for direct movement and the other (7) is connected to said rod for movement via a lost-motion mechanism (23, 24), in such a manner that one end part can first be raised, while the other end part is raised by continuing the operation of the drive device.
Claim 3
Dependent Claim
93 words
Adjustable bed according to Claim 1, of which the maximum adjustable inclination of the longer foot end part is limited and that of the shorter head end part amounts to a multiple thereof, characterized in that the lost-motion mechanism (23, 24) is disposed between the operating rod (13) and the head end part (4), in such a manner that, starting from the horizontal, fully flat position (Figure la), the foot end part (13) is first pivoted up and that the head end part (4) is raised only on completion of the lost-motion stroke.
Claim 4
Dependent Claim
93 words
Adjustable bed according to Claim 1 or 2, characterized in that the raising device (6) for the foot end part (3) is so constructed that as the operating rod (13) continues its movement, the foot end part (3) is first pivoted upwards with decreasing angular speed and that, after the head end part (4) has started to move on completion of the lost-motion stroke, the raising of the foot end part (3) will have practically ceased, while on further movement of the operating rod (13) it is maintained approximately in its highest position.
Claim 5
Dependent Claim
44 words
Adjustable bed according to one or more of the preceding claims, wherein the foot end part is provided with a so-called knee-bending device, characterized in that said device (30) is coupled to the operating rod (13) via its own lost motion mechanism (36, 37).
Claim 6
Dependent Claim
38 words
Adjustable bed according to one or more of the preceding claims, characterized in that each lost-motion mechanism (23, 24; 36, 37) has an individually adjustable end position (25, 26) for the lost stroke on its foot end side.
Claim 7
Dependent Claim
61 words
Adjustable bed according to one or more of the preceding claims, characterized in that the operating rod (13) is arranged, for a translatory movement and the lost-motion mechanism is a pin (23, 36) and slot (24, 37) device, and that the drive device comprises a threaded spindle and nut mechanism (15), so that the prime-mover (16) is of a rotary type.