# US 9,872,806 B2 · Bed for patient

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- Number: US 9,872,806 B2
- Document ID: US9872806B2
- Status: Granted
- Kind: B2
- Application number: 15/004,988
- Filed: 2016-01-24
- Published: 2017-07-27
- Granted: 2018-01-23
- Earliest claimed: 2016-01-24
- Assignees: Dk City Corporation
- Applicants: DK City Corporation
- Inventors: Chiu Hsiang Lo
- Web page: https://patentgrep.com/patent/US9872806B2

## CPC

- A61G 7/015: divided into different adjustable sections, e.g. for Gatch position
- A61G 7/018: Control or drive mechanisms
- A47C 19/02: Parts or details of bedsteads not fully covered in a single one of the following subgroups, e.g. bed rails, post rails
- A47C 19/04: Extensible bedsteads, e.g. with adjustment of length, width, height
- A61G 7/002: having adjustable mattress frame
- A61G 7/005: tiltable around transverse horizontal axis, e.g. for Trendelenburg position {(rocking beds for physical therapy A61H1/003; hanging patient inclined downwardly for drawing him out A61H2203/0493)}
- A61G 2203/74: for anti-shear when adjusting furniture
- A61G: TRANSPORT, PERSONAL CONVEYANCES OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS (appliances for aiding patients or disabled persons to walk A61H3/00); OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES (embalming corpses A01N1/00)
- A47C: CHAIRS; SOFAS; BEDS

## Abstract

A bed includes a base, a mattress-supporting device, two driving units and a limiting unit. The base includes two tracks. The mattress-supporting device includes a frame, a body-supporting element and a leg-supporting element. The frame includes rollers supported on the tracks. The body-supporting element is pivotally connected to an end of the frame. The leg-supporting element is pivotally connected to another end of the frame. The first driving unit is operable for pivoting the body-supporting element. The second driving unit is operable for pivoting the leg-supporting element. The limiting unit is movable between a first position to allow horizontal movement of the mattress-supporting device on the base as the body-supporting element is pivoted and a second position to avoid horizontal movement of the mattress-supporting device on the base as the body-supporting element is pivoted.

## Claims

### Claim 1

A bed comprising:
a base comprising two tracks;
a mattress-supporting device comprising:
a frame comprising rollers supported on the tracks;
a body-supporting element pivotally connected to an end of the frame; and
a leg-supporting element pivotally connected to another end of the frame;
a first driving unit operable for pivoting the body-supporting element and comprising:
a crankshaft supported on the frame;
an extensible element comprising an end pivotally connected to the frame and another end pivotally connected to the crankshaft;
two pivotal elements each comprising an end pivotally connected to the crankshaft and another end pivotally connected to the body-supporting element; and
a telescopic element comprising an end connected to the base and another end pivotally connected to the body-supporting unit;
a second driving unit operable for pivoting the leg-supporting element; and
a limiting unit movable between a first position to allow horizontal movement of the mattress-supporting device on the base as the body-supporting element is pivoted and a second position to avoid horizontal movement of the mattress-supporting device on the base as the body-supporting element is pivoted, wherein the limiting unit releases the frame from the base and avoids extension of the telescopic element in the first position, wherein the limiting unit locks the frame to the base and allows extension of the telescopic element in the second position.

### Claim 2 (depends on 1)

The bed according to claim 1, wherein the frame comprises two tracks, wherein the body-supporting element comprises two rollers supported on the tracks of the frame.

### Claim 3 (depends on 1)

The bed according to claim 1, wherein the each of the pivotal elements comprises a roller placed against the body-supporting element.

### Claim 4 (depends on 1)

The bed according to claim 1, wherein the limiting unit comprises a pin inserted in the telescopic element in the first position and inserted in the base through the frame in the second position.

### Claim 5 (depends on 4)

The bed according to claim 4, wherein the limiting unit further comprises an aperture made in the base, a lug connected to the base, and a socket connected to the lug, wherein the pin is inserted in the aperture through the socket in the second position.

### Claim 6 (depends on 4)

The bed according to claim 4, wherein the lug is connected to one of the tracks of the base.

### Claim 7 (depends on 6)

The bed according to claim 6, wherein the second driving unit comprises an extensible element formed with an end connected to the internal frame and another end connected to the leg-supporting element.