US4243147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional lift
Assignee: Individual
•
Filing: 1979-03-12
•
Granted: 1981-01-06
•
Expires: 1999-03-12
Abstract
Abstract A three-dimensional lift intended for use by a handicapped person, providing him with three dimensions of mobility within a room or rooms. The invention consists of uniform channels or rails secured in parallel configuration adjacent to or on a room ceiling with a traveling bridge arranged to traverse the length of the channels, and incorporates with the bridge a head mounted to travel thereacross spanning the room or rooms with a sling suspended therefrom to move vertically, supporting the handicapped person, and includes a remote control hung from the head, accessable to and giving the handicapped person the capability to operate the device while he is seated in the sling, providing that person with three dimensions of travel that they control. The invention includes two motors that are arranged with the head turning sprockets in fixed chains connecting between the wall channels across the traveling bridge to provide movement of the traveling bridge and head thereacross, with a third motor providing vertical movement of the sling. The motors are preferably operated by a low voltage system, preferably through batteries, to limit a potential for dangerous electrical shock to the handicapped person should the control contact water.
Inventors
- 👤 Brent L. Twitchell
- 👤 Kendel S. Twitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:52
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/104; A61G7/1042; A61G7/1013; A61G7/1015; A61G7/1049; A61G7/1051; B; B66; B66C; B66C17/00; A61G2200/00; A61G2200/30; A61G2200/34; A61G7/1061; Y; Y10; Y10S; Y10S414/00; Y10S414/134
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
215 words
A three dimensional lift comprising, a traveling bridge arranged to span between opposite sides of a room; channel means secured appropriately in said room for supporting said traveling bridge at its ends such that it can move therealong; trolley means secured to the ends of said traveling bridge arranged to travel along said channel means for supporting said traveling bridge as it travels along said channel means; a head arranged to travel back and forth on said traveling bridge; trolley means secured to said head and arranged with said traveling bridge so as to travel therealong; two chain means each secured at its ends to opposite ends of the channel means and passes across said traveling bridge, said chain means crossing each other at said head; two motor means each secured to said head, each having a sprocket means turned thereby, each sprocket means meshing into, to travel along, one of said chain means; a hoist motor means arranged with said head for turning a pulley means; a sling means for supporting a handicapped person; a cable means attached to said sling means and said pulley means; means for providing power to said two motor means and hoist motor means; and control means for controlling operation of said two motor means and hoist motor means.
Claim 2
Dependent Claim
215 words
A three dimensional lift comprising, a traveling bridge arranged to span between opposite sides of a room; channel means secured appropriately in said room for supporting said traveling bridge at its ends such that it can move therealong; trolley means secured to the ends of said traveling bridge arranged to travel along said channel means for supporting said traveling bridge as it travels along said channel means; a head arranged to travel back and forth on said traveling bridge; trolley means secured to said head and arranged with said traveling bridge so as to travel therealong; two chain means each secured at its ends to opposite ends of the channel means and passes across said traveling bridge, said chain means crossing each other at said head; two motor means each secured to said head, each having a sprocket means turned thereby, each sprocket means meshing into, to travel along, one of said chain means; a hoist motor means arranged with said head for turning a pulley means; a sling means for supporting a handicapped person; a cable means attached to said sling means and said pulley means; means for providing power to said two motor means and hoist motor means; and control means for controlling operation of said two motor means and hoist motor means.
Claim 3
Dependent Claim
53 words
A three dimensional lift as recited in claim 1, wherein the traveling bridge consists of a pair of U-shaped double channels that are secured in back to back relationship, said double channels maintained equidistantly spaced apart; and plate means secured across said double channel ends for maintaining said equidistantly spaced apart double channels.
Claim 4
Dependent Claim
21 words
A three dimensional lift as recited in claim 2, wherein the open ends of the U-shaped channel sides are flanged inwardly.
Claim 5
Dependent Claim
62 words
A three dimensional lift as recited in claim 3, wherein the trolley means secured to said head consists of, a yoke secured at its base to said head having an axle secured between upright sides thereof, said axle maintaining wheels journaled thereon that are arranged in a lower channel of the double channel said wheels rolling along the inwardly flanged ends thereof.
Claim 6
Dependent Claim
102 words
A three dimensional lift as recited in claim 1, wherein the channel means secured appropriately in said room each consist of U-shaped channels each secured along one upright side to opposite room walls, the ends of said upright sides facing towards the room floor and flanged inwardly towards one another; and the trolley means secured to the traveling bridge ends consists of, a yoke secured at its base to said traveling bridge end having an axle secured between upright sides thereof, said axle maintaining wheels journaled thereon that are each arranged in said U-shaped channel rolling along said inwardly flanged ends thereof.
Claim 7
Dependent Claim
28 words
A three dimensional lift as recited in claim 1, further including flexible coupling means for securing one end of each chain means to one of the channel means.
Claim 8
Dependent Claim
36 words
A three dimensional lift as recited in claim 6, wherein the flexible coupling means is a spring secured at its one end to a chain means end and at its other end to the channel means.
Claim 9
Dependent Claim
23 words
A three dimensional lift as recited in claim 1, wherein each motor means is an electrical motor capable of clockwise and counterclockwise turning.
Claim 10
Dependent Claim
24 words
A three dimensional lift as recited in claim 8, wherein the means for providing power to operate each motor means is a storage battery.
Claim 11
Dependent Claim
23 words
A three dimensional lift as recited in claim 9, wherein each of the motor means is operated from a twelve volt battery source.
Claim 12
Dependent Claim
49 words
A three dimensional lift as recited in claim 1, further including idler sprocket means arranged with said traveling bridge, each idler sprocket means meshing with one of the chain means, supporting said chain means as it makes a ninety degree band between said traveling bridge and the channel means.
Claim 13
Dependent Claim
45 words
A three dimensional lift as recited in claim 1, further including idler sprocket means arranged with said head, each idler sprocket means meshing with one of the chain means, for maintaining said chain means against the sprocket means turned by one of the motor means.
Claim 14
Dependent Claim
50 words
A three dimensional lift as recited in claim 1, wherein the sprocket means are conventional sprocket gears having uniformly spaced teeth extending radially therefrom; and the chain means consist of individual links pivotally coupled end to end, each link formed such that a sprocket gear tooth can freely pass therein.
Claim 15
Dependent Claim
42 words
A three dimensional lift as recited in claim 11, wherein the sprocket means each turned by one of the two motor means are off-set with respect to one another such that said chain means can cross over one another at the head.
Claim 16
Dependent Claim
19 words
A three dimensional lift as recited in claim 1, wherein the hoist motor means is a conventional electric motor.
Claim 17
Dependent Claim
23 words
A three dimensional lift as recited in claim 15, wherein the means providing power to the hoist motor means is a storage battery.
Claim 18
Dependent Claim
23 words
A three dimensional lift as recited in claim 16, wherein, the hoist motor means is operated from a twenty four volt battery source.
Claim 19
Dependent Claim
36 words
A three dimensional lift as recited in claim 1, further including, a transmission operated by the hoist motor means; and an output shaft from said transmission connection to the pulley means and turned by said transmission.
Claim 20
Dependent Claim
44 words
A three dimensional lift as recited in claim 1, wherein, the sling means includes a trapeze bar supporting a sling portion thereof and connects, at a center thereof to the cable means; and means for connecting said cable means to said trapeze bar center.
Claim 21
Dependent Claim
50 words
A three dimensional lift as recited in claim 1, wherein the control means consists of a control suspended from the head convenient to a handicapped person arranged in the sling means; and means associated with said control for switching power therethrough appropriately to the motor means and hoist motor means.
Claim 22
Dependent Claim
20 words
A three dimensional lift as recited in claim 20, wherein the switching means is operated from a low voltage source.
References Cited (Backward Citations)
US687633A
Cited
US2272788A
Cited
GB786193A
Cited
GB1092926A
Cited
US3937151A
Cited
US4003479A
Cited
US4125908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |