Patent US4669137A successfully refreshed from Google Patents.
US4669137A
Expired / Lapsed
US
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Apparatus for moving objects or persons
Assignee: Maquet GmbH
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Filing: 1985-12-10
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Granted: 1987-06-02
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Expires: 2005-12-10
Abstract
Abstract An apparatus for moving persons, including a support structure (18, 20) a horizontally sliding stage (26) attached to it with a support surface (30), girdled by a continuous upper conveyor belt (36), moveable in parallel to the sliding direction of the stage (26) and with a belt guide for a lower belt (60), set parallel to the conveyor belt (36), where one of the belts (36, 60) can be driven by means of a belt drive, as well as a sliding drive for the stage (26). Here, the lower finite belt (60) is attached at both ends (68, 70) to the support structure (18, 20) and, within the range of the free stage edges, that are perpendicular to the sliding direction of the stage (26), it is guided over a bar (58) that is set parallel to them and connected to the support surface (30). Along part of its course, the lower part (40) of the conveyor belt (36) loops around a drive shaft ( 44) of the belt drive built into the support structure (18, 20).
Inventors
- 👤 Eberhard Schnelle
- 👤 Siegmar Noth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:49
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1019; A61G7/1025; A61G7/1032; A61G7/1034; A61G7/1049; A61G7/1057; B; B65; B65G; B65G15/00; B65G15/60; B65G15/62; B65G21/00; B65G21/10; B65G21/12; A61G2200/00; A61G2200/30; A61G2200/32
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
167 words
In an apparatus for moving objects or persons, said apparatus including a support structure, a stage horizontally slideable along said structure and having a support surface, said support surface being surrounded by an upper continuous conveyor belt which is movable in parallel to the sliding direction of the stage by a belt drive, the improvement wherein the apparatus includes a lower belt (60) having outer ends thereof (68, 70) attached to the support structure (18, 20), a pair of bars (58) connected to the support surface (30), each bar located on one end of the support surface and running perpendicular to the sliding direction of the stage (26), a lower part (40) of the conveyor belt (36) being adapted to loop around a drive shaft (44) of the belt drive which is built into the support structure (18, 20), and the lower belt being carried over said bars (58) and guided through the support structure (18, (20) beneath the drive shaft (44) by means of rollers (72).
Claim 2
Dependent Claim
167 words
In an apparatus for moving objects or persons, said apparatus including a support structure, a stage horizontally slideable along said structure and having a support surface, said support surface being surrounded by an upper continuous conveyor belt which is movable in parallel to the sliding direction of the stage by a belt drive, the improvement wherein the apparatus includes a lower belt (60) having outer ends thereof (68, 70) attached to the support structure (18, 20), a pair of bars (58) connected to the support surface (30), each bar located on one end of the support surface and running perpendicular to the sliding direction of the stage (26), a lower part (40) of the conveyor belt (36) being adapted to loop around a drive shaft (44) of the belt drive which is built into the support structure (18, 20), and the lower belt being carried over said bars (58) and guided through the support structure (18, (20) beneath the drive shaft (44) by means of rollers (72).
Claim 3
Dependent Claim
23 words
The improvement of claim 1 wherein each bar (59) is located in a recess (56) on the underside of the support surface (30).
Claim 4
Dependent Claim
49 words
The improvement of claim 2 wherein the ends of the bars (58) are connected to swivel arms (62), set perpendicular to their longitudinal direction, and the swivel arms being hinged to the support surface (30), pivoting around an axis (64, 66) parallel to the longitudinal direction of the bars.
Claim 5
Dependent Claim
18 words
The improvement of claim 3 wherein the support surface (30) is girdled by a surrounding metal frame (54).
Claim 6
Dependent Claim
32 words
The improvement of claim 4 wherein each recess (56) is formed in the metal frame (54) forming borders of the support surface and set square to the sliding direction of the stage.
Claim 7
Dependent Claim
63 words
The improvement of claim 5 wherein the support structure includes at least one vertical support column and a bearing frame designed to be set at different heights to which the stage is attached, and wherein a sliding drive for the stage (26) and a height setting drive are attached to a lifting device (18) together with the belt drive (50, 48, 44, 42).
Claim 8
Dependent Claim
92 words
The improvement of claim 6 wherein ends of the lifting device (18) are attached to two support columns (20), that a height adjusting motor (92), attached to the lifting device (18), drives a shaft (96), built into the lifting device (18), the shaft having ends of which are attached chain wheels (100) that grip into a chain (104), the chain spanning vertically the corresponding support column (20) and being held positively to the chain wheels (100) on the shaft (96) by means of chain wheels (102) built into the lifting device (18).
Claim 9
Dependent Claim
40 words
The improvement of claim 7 wherein vertical spring elements (116) between the supporting columns (20) and the lifting device (18), are arranged in such a way that they effect an at least partial weight balance of the lifting device (18).
Claim 10
Dependent Claim
15 words
The improvement of claim 1 wherein the support surface (30) contains a heating unit (132).
Claim 11
Dependent Claim
55 words
The improvement of claim 9 wherein the heating unit (132) is set directly onto the undersurface of an upper boundary plate (128) of the support surface (30) as a surface heater and wherein space between the heating unit (132) and a lower boundary plate (130) of the support surface (30) is filled with plastic foam.
Claim 12
Dependent Claim
21 words
The improvement of claim 10 wherein a voltage source is used to generate a heat voltage of less than 220 Volts.
Claim 13
Dependent Claim
23 words
The improvement of claim 11 wherein the heat output of the heating unit generates about 0.5 to 1.5 Watt per dm 2 .
Claim 14
Dependent Claim
23 words
The improvement of claim 12 wherein the heating unit (132) is connected to the voltage source by means of a spiral cable (134).
Claim 15
Dependent Claim
49 words
The improvement of claim 1 wherein pressure sensitive contact elements (136, 138) are located on said bars (58) and support surface (30) and connected to the belt drive (50) in such a way that the belt drive is switched off when the pressure therebetween exceeds a certain threshold value.
Claim 16
Dependent Claim
22 words
The improvement of claim 14 wherein the contact elements are designed as contact strips (136, 138) stretching across the support surface (30).
References Cited (Backward Citations)
US3579672A
Cited
US3765037A
Cited
US3883991A
Cited
US3947902A
Cited
US4162393A
Cited
US4087873A
Cited
US4125907A
Cited
US4534077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |