US 7,743,440 B2Granted

Bed with automatic mattress lifting system

OwnerJohn A. Burnettinventor

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Abstract

The bed with automatic mattress lifting system is a bed with a frame and an internal drive system for raising a mattress above the frame, allowing the user to easily change the sheets or other bed coverings. The mattress rests on a mattress supporting platform, which, in the lowered position, is received within the frame. In operation, driven motion of an internal rod caused by a drive system located within the frame generates rotation in a lever arm. The lever arm is secured to a shaft that extends across the frame, and rotation of the shaft causes a pair of supports to rotate. Upper ends of the supports are joined to a lower surface of the mattress supporting platform, thus driving upward movement of the mattress supporting platform. The sheets cover both the mattress and the platform, allowing the sheets to be changed without having to manually lift the mattress.

Claims18

Dependent claims

A bed with an automatic mattress lifting system, comprising:

a frame defining an open interior region, the frame including an upper edge;
a mattress supporting platform having opposed upper and lower surfaces, the upper surface being sized to be substantially encompassed by the open interior region and being adapted for supporting a mattress;
at least one first support having opposed upper and lower ends, the upper end thereof being pivotally joined to the lower surface of the mattress supporting platform;
at least one second support having opposed upper and lower ends, the upper end thereof being pivotally joined to the lower surface of the mattress supporting platform;
first and second shafts extending laterally within the open interior region of the frame and being rotatably secured to the frame, the lower end of the at least one first support being attached to the first shaft and the lower end of the at least one second support being attached to the second shaft;
a user-actuatable drive;
a rod driven by the user-actuatable drive;
a lever arm having opposed first and second ends, the first end of the lever being attached to the second shaft, the second end of the lever being pivotally attached to the rod;
and
at least one bracket secured to the lower surface of said mattress supporting platform, the at least one bracket having a slot formed therethrough, the upper end of the at least one second support having a projecting member formed thereon, the projecting member being slidable and pivotal in the slot,
wherein driven motion of the rod causes the lever arm to rotate, driving rotation of the second shaft, rotation of the second shaft causing the at least one second support to rotate, thereby driving upward movement of the mattress supporting platform whereby the platform clears the upper edge of the frame and subsequently permits the projecting member to slide in the slot resulting in a fully raised platform position.

8 more elements

A platform bed with an automatic mattress lifting system, comprising:

a frame defining an open interior region, the frame having side surfaces and an upper edge;
a mattress;
a mattress supporting platform having opposed upper and lower surfaces, the upper surface being sized to be substantially encompassed by the open interior region and removably supporting the mattress;
at least one first support having opposed upper and lower ends, the upper end thereof being pivotally joined to the lower surface of the mattress supporting platform;
at least one second support having opposed upper and lower ends, the upper end thereof being pivotally joined to the lower surface of the mattress supporting platform;
first and second shafts extending laterally across the open interior region of the frame and being rotatably attached to the frame, the lower end of the at least one first support being attached to the first shaft and the lower end of the at least one second support being attached to the second shaft;
a user-actuatable drive;
a rod driven by the user-actuatable drive;
a lever arm having opposed first and second ends, the first end of the lever arm being attached to the second shaft, the second end of the lever arm being pivotally attached to the rod;
and
at least one bracket secured to the lower surface of said mattress supporting platform, the at least one bracket having a slot formed therethrough, the upper end of the at least one second support having a projecting member formed thereon, the projecting member being slidable and pivotal in the slot,
wherein driven motion of the rod causes the lever arm to rotate, driving rotation of the second shaft, rotation of the second shaft causing the at least one second support to rotate, thereby driving upward movement of the mattress supporting platform whereby the platform clears the upper edge of the frame and subsequently permits the projecting member to slide in the slot resulting in a fully raised platform position.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/081,032Filed 9 Apr 2008
Published: US 2009/0255056 A115 Oct 2009
Granted: 29 Jun 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61G 7/012
Having adjustable mattress frame: raising or lowering of the whole mattress frame
A47C 17/86
Sofas; Couches; Beds: parts or details specially adapted for beds, sofas or couches not fully covered by any single one of groups A47C17/02 -…
A47C 19/045
Extensible bedsteads, e.g. with adjustment of length, width, height: with entire frame height or inclination adjustments
A61G 7/018
Having adjustable mattress frame: control or drive mechanisms

Family

US 2009/0255056 A1Pre-grant publication · published 15 Oct 2009
US 7,743,440 B2This patent

From the US filing history. Foreign family members aren’t listed.

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