Patent US4848794A successfully refreshed from Google Patents.
US3798684A
Expired / Lapsed
US
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Fluidic switching system
Assignee: INTERROYAL CORP
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Filing: 1971-11-19
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Granted: 1974-03-26
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Expires: 1991-11-19
Abstract
Abstract A non-electrical fluidic control system is provided for actuating means for adjusting the position of a hospital bed. The fluidic control cystem includes a hand-held pendant having a plurality of plungers which communicate with respective cylinders to force air pressure through respective air tubes or conduits. A bellows, connected to the distal end of the tubes, cooperates with a snap-action switch for energizing a respective motor means for adjusting the position of the bed. Additionally, an assembly retriever means is provided for supporting and maintaining an air tube sleeve off the floor lever as an improved safety feature.
Inventors
- 👤 R Bennice
- 👤 R Benoit
- 👤 J Curran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:43
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/002; A61G7/018
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
174 words
An adjUstable multi-section hospital bed capable of assuming a variety of positions of the sections relative to each other comprising: mechanical adjustment means for selectively moving the position of the different sections of said bed relative to one another, motor means coupled to said mechanical adjustment means for establishing a calculated movement thereof under the influence of remote control, fluid operative switch means connected to said motor means for providing actuation thereof to control the positional change of the bed section under control derived from the remote control, a pendant control means at the remote control location for controlling the motor switch connected means, a plurality of fluid carrier tubes connected between the remote control and the switch connected means, a plurality of pressure responsive means connected at one end with the remotely located pendant control means and at the other end with expansible bellows means for controlling the switch operation, and means provided through the pressure responsive means for controlling the operation of the switching means to control thereby motor activation and deactivation.
Claim 2
Dependent Claim
174 words
An adjUstable multi-section hospital bed capable of assuming a variety of positions of the sections relative to each other comprising: mechanical adjustment means for selectively moving the position of the different sections of said bed relative to one another, motor means coupled to said mechanical adjustment means for establishing a calculated movement thereof under the influence of remote control, fluid operative switch means connected to said motor means for providing actuation thereof to control the positional change of the bed section under control derived from the remote control, a pendant control means at the remote control location for controlling the motor switch connected means, a plurality of fluid carrier tubes connected between the remote control and the switch connected means, a plurality of pressure responsive means connected at one end with the remotely located pendant control means and at the other end with expansible bellows means for controlling the switch operation, and means provided through the pressure responsive means for controlling the operation of the switching means to control thereby motor activation and deactivation.
Claim 3
Dependent Claim
63 words
The Hospital Bed structure claimed in claim 1 wherein the said control means comprises a plurality of plungers, a fluid carrier tube connected between said plungers and the motor control switch means to force fluid through the tube associated with the activated control so that with the depression of the associated plunger therewith the associated switch may be moved between two limiting positions.
Claim 4
Dependent Claim
27 words
The adjustable multi-section hospital bed, as claimed in claim 1, comprising separate motor means for achieving each control where said motor means consists of a reversible motor.
Claim 5
Dependent Claim
48 words
The adjustable hospital bed as set forth by claim 2, comprising, in addition: a spring member located within each of the cylinders to bias the plunger supported therein in one direction so that a normal condition to the plunger is independent of any movement of a bed component.
Claim 6
Dependent Claim
45 words
The adjustable hospital bed, as claimed in claim 2, comprising, in addition: a bellows member connected at one end of each fluid carrier tube and adapted to be expanded with the movement of fluid through the tube as controlled from the remotely positioned pendant control.
Claim 7
Dependent Claim
19 words
An adjustable hospital bed as set forth in claim 2, including spring biased retriever means for supporting said sleeve.
Claim 8
Dependent Claim
56 words
An adjustable hospital bed as set forth in claim 5, wherein said retriever means comprises a spring biased retriever reel rigidly mounted to said hospital bed, a cable wound on said retriever reel, a bracket attached to the end of said cable, and a roller mounted to said bracket, said sleeve being carried by said roller.
Claim 9
Dependent Claim
62 words
A bed as set forth in claim 1, wherein said switch means comprises a spring arm member abutting against said bellows, a movable projecting member abutting against said spring arm member, a pair of contacts controlled by the position of said projecting member, wherein when said bellows expands said projecting member is moved closing said contacts and energizing a respective motor means.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |