Height and angle adjustable bed

A height and angle adjustable bed comprising:

• a bed frame including at least one longitudinal framing member, a first transverse framing member at a head portion of the bed frame and a second transverse framing member at a foot portion of the bed frame;
• a first articulated support pivotably connected to the head portion of the bed frame, and a second articulated support pivotably connected to the foot portion of the bed frame, the first and second articulated supports each comprising an upper support joined articulatedly to a lower support;
• a first sliding hinge and a second sliding hinge each comprising an arcuate slot and at least one pin retained in the slot, the at least one pin of each of the first sliding hinge and the second sliding hinge being connected to the lower supports of the first articulated support and the second articulated support, respectively, such that the at least one pin is capable of translating and pivoting;
• a first wheeled base connected to the first articulated support by the first sliding hinge;
• a second wheeled base connected to the second articulated support by the second sliding hinge;
• a linkage member pivotably connected on one end to the first articulated support and on the other end to the second articulated support;
• a linear actuator having a first end and a second end, pivotably connected on the first end to the linkage member, the linear actuator being capable of extension and retraction;
• an actuating frame pivotably connected to the second end of the linear actuator and pivotably connected to the first articulated support at a first fulcrum point and the second articulated support at a second fulcrum point, such that extension and retraction of the linear actuator raises and lowers the bed frame and such that during raising and lowering of bed frame the at least one pin of each of the first sliding hinge and the second sliding hinge, in one range of intermediate positions, is translating and, in another range of intermediate positions, is not translating;
• and
• an articulated mattress frame supported by the bed frame, the articulated mattress frame including a head assembly, a foot assembly and a central assembly, the central assembly attaching the head assembly to the foot assembly articulatedly, wherein the articulated mattress frame is supported by the bed frame.

A height adjustable bed comprising:

• a bed frame including a head portion and a foot portion;
• a first articulated support pivotably connected to the head portion of the bed frame, and a second articulated support pivotably connected to the foot portion of the bed frame, the first and second articulated supports each comprising an upper support joined articulatedly to a lower support;
• a first sliding hinge and a second sliding hinge;
• a first wheeled base connected to the lower support of the first articulated support by the first sliding hinge;
• a second wheeled base connected to the lower support of the second articulated support by the second sliding hinge;
• a linkage member pivotably connected on one end to the first articulated support and on the other end to the second articulated support;
• a linear actuator having a first end and a second end, pivotably connected on the first end to the horizontal linkage member, the linear actuator being capable of extension and retraction;
• and
• an actuating frame pivotably connected to the second end of the linear actuator and pivotably connected to the first articulated support and the second articulated support;
• wherein extension and retraction of the linear actuator raises and lowers the bed frame and during raising of the bed frame from a low position to a high position the bed reaches a transition point and forces acting downward on the first articulated support and the second articulated support are applied to the first sliding hinge and the second sliding hinge, when the bed is raised above the transition point, and as the bed is lowered from the high position, the actuating frame contacts the first wheeled base and the second wheeled base when the bed reaches the transition point and the forces acting downward are shifted away from the first sliding hinge and the second sliding hinge to the actuating frame when the bed is below the transition point.

A height adjustable bed comprising:

• a bed frame including at least one longitudinal framing member, a first transverse framing member at a head portion of the bed frame and a second transverse member at a foot portion of the bed frame;
• a first articulated support pivotably connected to the head portion of the bed frame and including a first upper support articulatedly joined to a first lower support, the first lower support comprising a first support leg and a second support leg, the second support leg of the first lower support being attached to the first support leg of the first lower support by a first cross member;
• a second articulated support pivotably connected to the foot portion of the bed frame and including a second upper support articulatedly joined to a second lower support, the second lower support comprising a first support leg and a second support leg, the second support leg of the second lower support being attached to the first support leg of the second lower support by a second cross member;
• a first castor base connected to the first support leg of the first lower support by a first sliding hinge and to the second support leg of the first lower support by a second sliding hinge, the first castor base comprising at least two castor wheels connected by a caster base frame;
• a second castor base connected to the first support leg of the second lower support by a third sliding hinge and to the second support leg of the second lower support by a fourth sliding hinge, the second castor base comprising at least two castor wheels connected by a castor base frame;
• an actuating frame comprising a left longitudinal member and a right longitudinal member connected to the left longitudinal member by at least one transverse member, the left longitudinal member being pivotably connected to the first support leg of the first lower support and to the first support leg of the second lower support, the right longitudinal member being pivotably connected to the second support leg of the first lower support and the second support leg of the second lower support;
• a linear actuator having a first end and a second end, being pivotably connected at the first end to a linkage member that is pivotably connected on one end to the first articulated support and on another end to the second articulated support, and the linear actuator being pivotably connected at the second end to one of the at least one transverse member of the actuating frame such that extension and retraction of the linear actuator raises and lowers the bed;
• and
• wherein during raising of the bed frame from a low position to a high position the bed reaches a transition point and forces acting downward on the first articulated support and the second articulated support are applied to the first sliding hinge, the second sliding hinge, the third sliding hinge and the fourth sliding hinge, when the bed is raised above the transition point, and as the bed is lowered from the high position, the actuating frame contacts the first castor base and the second castor base when the bed reaches the transition point and the forces acting downward are shifted away from the first sliding hinge, the second sliding hinge, the third sliding hinge and the fourth sliding hinge to the actuating frame when the bed is below the transition point.