# US 9,867,744 B2 · Emergency lift and transport system

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,867,744 B2
- Document ID: US9867744B2
- Status: Granted
- Kind: B2
- Application number: 15/443,090
- Filed: 2017-02-27
- Published: 2017-06-15
- Granted: 2018-01-16
- Earliest claimed: 2015-06-16
- Applicants: Robert S Krolick; Sanford Shapiro; Duane Carling
- Inventors: Robert S Krolick; Sanford Shapiro; Duane Carling
- Web page: https://patentgrep.com/patent/US9867744B2

## CPC

- A61G 1/003: with facilities for picking up patients or disabled persons, e.g. break-away type or using endless belts
- A61G 1/013: foldable or collapsible (A61G1/017 takes precedence)
- A61G 1/04: Parts, details or accessories, e.g. head-, foot- or like rests specially adapted for stretchers
- A61G 1/056: Swivelling legs
- A61G 1/06: Supports for stretchers, e.g. to be placed in or on vehicles {(A61G1/0293 takes precedence; supports fixed to a vehicle A61G3/02 - A61G3/08)}
- A61G 7/012: raising or lowering of the whole mattress frame (A61G7/005, A61G7/008 take precedence)
- 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)

## Abstract

A lift system 100 may comprise two sets of two pistons with each set of pistons attached to an upper cross bar 210 and a lower cross bar 275, with the lower cross bar having distal ends comprising distal insertion areas 276 with the distal insertion areas passing through a first void 241 defined within a wheelie bar 240 and the distal insertion areas 276 reaching further to move a wedge bar 270. To lift a patient from a lowered position, a piston moves a lower cross bar 275 which in turn moves a wedge bar 270 into a wedge 280, causing the lower cross bar to break out of plane with a top bar 205. The use of two wheelie gears 220 ensures that the lift remains horizontal even if piston forces are not uniform.

## Claims

### Claim 1

A lift comprising:
a) a top bar (205) fixedly attached to a wedge (280) and the top bar pivotally attached to a first wheelie gear (220), the first wheelie gear attached to two wheelie bars (240), each wheelie bar comprising a longitudinal body (245) with the longitudinal body defining a first longitudinal void (241) the first longitudinal void of the wheelie bar retaining a lower cross bar (275), with the longitudinal void allowing the lower cross bar to slide within the wheelie bar;
b) a wedge bar (270) attached to a distal end of the lower cross bar, the wedge bar comprising a first end having a cambered edge (271).

### Claim 2 (depends on 1)

The lift of claim 1 further comprising at least one piston attached to the lower cross bar and an upper cross bar (210).

### Claim 3 (depends on 2)

The lift of claim 2 wherein the wedge comprises an angled edge (281), the angled edge comporting to the cambered edge of the wedge bar.

### Claim 4 (depends on 2)

The lift of claim 2 further comprising a cylinder rod clevis (267) attached to the lower cross bar and the piston.

### Claim 5 (depends on 2)

The lift of claim 2 further comprising a cylinder (260) attached to the piston.

### Claim 6 (depends on 2)

The lift of claim 2 wherein the piston is attached to an upper cross bar (210).

### Claim 7 (depends on 2)

The lift of claim 2 wherein one or more wheels are attached to each of the wheelie bars.

### Claim 8 (depends on 2)

The lift of claim 2 wherein a skid plate (450) is attached to each of the two wheelie bars.

### Claim 9 (depends on 2)

The lift of claim 2 with a second wheelie gear in geared connection to the first wheelie gear.

### Claim 10 (depends on 2)

The lift of claim 2 with four pistons, with each piston attached to a lower cross bar and a upper cross bar.