Patent US3673620A successfully refreshed from Google Patents.
US3673620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically-operated trolley for hospital beds
Assignee: Individual
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Filing: 1969-02-28
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Granted: 1972-07-04
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Expires: 1989-02-28
Abstract
Abstract A trolley for use in conjunction with a hospital bed, the trolley comprising a pair of end frames each having one transverse vertically movable bar which carries means to attach the trolley to the bed. There being a pair of side rail frames vertically movable connected between the end frames, and having a plurality of horizontally spaced webs interconnecting the side rail frames for supporting a patient. Lastly, there are hydraulic means for selectively raising and lowering the side rail frames and the webs. Optionally, a weighing device can be used in combination with the trolley to weigh patients in situ.
Inventors
- 👤 Barbara Joan Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:42
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/10; A61G7/1013; A61G7/1019; A61G7/104; A61G7/1046; A61G7/1049; A61G7/1055; A61G7/1057; A61G7/1073; A61G7/1074; A61G7/108
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A trolley for use with a hospital bed, said trolley comprising a pair of end frames; a pair of side rail frames vertically movable between said end frames; a plurality of horizontally spaced webs interconnecting said side rail frames for supporting a patient; means for selectively raising and lowering said side rail frames and said webs; said end frames each comprising two vertical legs of channel section having a vertically adjustable transverse end bar and means on said bar for attaching the trolley to the hospital bed; an upper longitudinal channel being connected to the upper portion of each end frame; a series of wire cables attached between said raising and lowering means and vertically movable weights in each leg for actuating said side rails; said raising and lowering means including a single hydraulic cylinder and piston housed in one of said vertical legs; wire cables being guided within said channel sections and said upper longitudinal section by sheaves; and engagement means at the bottom of each of said weights for positively engaging and lifting said side rails and controlledly lowering them.
Claim 2
Dependent Claim
182 words
A trolley for use with a hospital bed, said trolley comprising a pair of end frames; a pair of side rail frames vertically movable between said end frames; a plurality of horizontally spaced webs interconnecting said side rail frames for supporting a patient; means for selectively raising and lowering said side rail frames and said webs; said end frames each comprising two vertical legs of channel section having a vertically adjustable transverse end bar and means on said bar for attaching the trolley to the hospital bed; an upper longitudinal channel being connected to the upper portion of each end frame; a series of wire cables attached between said raising and lowering means and vertically movable weights in each leg for actuating said side rails; said raising and lowering means including a single hydraulic cylinder and piston housed in one of said vertical legs; wire cables being guided within said channel sections and said upper longitudinal section by sheaves; and engagement means at the bottom of each of said weights for positively engaging and lifting said side rails and controlledly lowering them.
Claim 3
Dependent Claim
70 words
A trolley as claimed in claim 1 wherein said hydraulic means also includes a fluid reservoir connected to a powered pump; a slit valve and metering valve for regulating the downward speed of said side rails and an emergency hand valve should said aforesaid valves fail; and a switch for stopping said pump at the end of the piston stroke and an emergency pressure switch should said stopping switch fail.
Claim 4
Dependent Claim
36 words
A trolley as claimed in claim 2 wherein said powered pump is hand powered; and a traction bar is provided along the center line of the trolley attached to the upper portions of each end frame.
Claim 5
Dependent Claim
31 words
A trolley as claimed in claim 1 wherein said side rail frames each have upper and lower longitudinal bars interconnected by uprights, and suspension means connect said webs to said uprights.
Claim 6
Dependent Claim
49 words
A trolley as claimed in claim 4 wherein said suspension means includes two suspension plates on either side of an upright connected together at one end by a roller which rides on said upright and having web hook means at the other end; and said uprights are inwardly inclined.
Claim 7
Dependent Claim
40 words
A trolley as claimed in claim 5 wherein some of said uprights are fixed to said longitudinal bars and other of said uprights are movable therealong, said movable uprights are both slideable along and pivotable about said upper longitudinal bar.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |