US3697846A - Control system for hospital bed - Google Patents
Control system for hospital bed Download PDFInfo
- Publication number
- US3697846A US3697846A US114590A US3697846DA US3697846A US 3697846 A US3697846 A US 3697846A US 114590 A US114590 A US 114590A US 3697846D A US3697846D A US 3697846DA US 3697846 A US3697846 A US 3697846A
- Authority
- US
- United States
- Prior art keywords
- switch
- reverse
- bed
- motor
- pendant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/018—Control or drive mechanisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20576—Elements
- Y10T74/20636—Detents
Definitions
- the drawing is a schematic diagram showing circuit elements, mechanical switch interconnections, and the separation of elements between the pendant and the footboard control panel.
- control system of the present invention has particular utility in controlling the various functions of the bed structure disclosed in a copending, co-owned application of Turko and Mueller for Invalid Bed Constructionff Ser. No. 49,672, filed June 25, 1970.
- the other terminal of the relay coil 20 is connected through a set of normally closed switch contacts 40a and a normally closed limit switch 41 to the line 28 connected to the secondary winding 27 of transformer 26.
- the limit switch 41 is associated with the bed, and it opens when the head panel of the bed is raised to a predetermined limit.
- the other terminal of relay coil 21 is connected through a set of normally closed switch contacts 43a and a normally closed limit switch 44 to the line 28.
- the limit switch 44 opens when the head panel is lowered to a predetermined, horizontal position.
- the switches 40a and 430 are actuated respectively by push buttons 40 and 43, and associated with each of these switches is another set of normally closed contacts designated respectively 40b and 43b.
- the contacts 40a open immediately and shortly thereafter the contacts 40b close.
- the push buttons 40 and 43 may be arranged so that they toggle about a center line whereby only one push button at a time may activate its associated switches.
- the limit switch 53 is connected to one of the leg panels and it is desired to open when that panel reaches a predetermined upper position; whereas, the limit switch 55 may be connected to the frame and it is adapted to open when the leg panels reach a lower (horizontal) position.
- buttons 57 and 58 in the pendant 10 for initiating the forward and reverse direction of the knee motor 13, and each of these is associated with a two-position switch designated respectively 57a and 58a.
- the circuit connections for the control circuitry associated with the knee motor is similar in structure and operation to that disclosed in connection with the head motor. It will be observed that a line interconnects the line 31 through the two normally closed positions of the switches 57a and 58a to the common junction between the switches 526 and 54b as well as to the switches 22b and 23b.
- the relay coil 22 is connected in series with the normally closed switches 52a and the limit switch 53 whereas the relay coil 22 is connected in series with the normally closed switch 54a and normally closed limit switch 55.
- the control circuitry associated with the bed motor 14 is similar, though not identical, to that which has been disclosed in connection with the control of the head motor 12.
- This circuitry is shown to the right of the drawing, and it includes the previously-mentioned relay coils 24 and 25 and their associated switches (24a, 24b, 25a and 25b). Each coil is connected by means of a normally closed lock out switch (62 and 63) to normally open positions of the switches 64 and 65 respectively.
- the switches 64 and 65 are located in the pendant and each is similar to the previouslydescribed switches 33 and 34, being controlled respectively by push buttons 66 and 67.
- the normally closed terminal of switch 65 is connected via line 75 to one contact each of switches 24 and 25b, the other contacts of which are connected respectively to the previouslymentioned terminals of coils 24 and 25.
- the other terminal of the coil 24 is connected in series with a set of normally closed contacts 68a and a normally closed limit switch 69 to the line 28; and the other terminal of the relay coil 25 is connected through a normally closed switch 70, a normally closed levelsensitive switch 71 and a normally closed limit switch 72 to the line 28.
- the junction between the switches 71 and 72 is directly connected by means of a line 73 and the filament of a lamp 74 to the line 31.
- the level sensitive switch 71 may be a conventional mercury switch attached to the main mattress support frame of the bed which opens when the bed is tilted head down and feet up (the Trendelenburg position) to a predetermined incline.
- Associated with the contacts 68a and 70a are two push buttons 68 and 70, and these also control respectively the normally open contacts 68b and 70b.
- the limit switches 69 and 72 are opened when the bed is respectively in its uppermost and lowermost positions. If the bed is to be operated without the pendant, the pendant can be disconnected from the line by means of a disconnect socket; and a plug put into the control socket to complete the circuit from lead 31 to leads 46, 59 and 75.
- control circuitry associated with the bed motor 14 is similar to that provided for controlling the head motor 12, the operation of which will now be discussed.
- the limit switch 41 is opened indicating that the head panel has reached the full extent of its travel
- the occupant may de-energize that coil by pressing either of the switches 33, 34 at the pendant which will interrupt current flow through the line 31, causing the coil 21 to be de-energized and the contacts 21b to open.
- the forward control relay coil is energized at the footboard panel while the lock out switches 38, 39 are open, depressing either of the head control push buttons 35, 36 at the pendant will cause that forward control coil to be de-energized and drop out of the circuit.
- it will be observed that it is the opening of the nonnally closed switch contact of the switches 33, 34 which causes the dropping out of an associated relay coil, not the closing of the normally open contact of those switches.
- All of the lock switches 38, 39, 50, 51, 62 and 63 may be mechanically interconnected so as to be opened or closed simultaneously, or the switches may be grouped in pairs, if desired such that an attendant could selectively lock out control of either the head motor, knee motor, or bed motor, or any combination of them.
- an invalid bed having a pair of side scissors linkage mechanisms for raising and lowering an upper patient-support frame relative to a base frame. Movement of the patient-support frame into the Trendelenburg or reverse Trendelenburg positions is achieved by buckling corresponding links in each of the scissors linkage mechanisms. To achieve the Trendelenburg position, the bed is raised to its highest position and the lower ends of the scissors linkage at the foot end of the bed are blocked against movement so that when the bed motor 14 is energized to move the bed down by pushing the button 70, the scissors frame will buckle and the head section will lower until the level sensitive switch 71 opens when the patient-support frame has achieved a predetermined inclination relative to the horizontal. When switch 71 opens, it breaks the circuit to coil 25, thereby opening contact a and shutting down the bed motor 14.
- the lamp 74 is energized when the light switch 71 is closed, indicative of the fact that the bed is not in its lowermost position.
- the switch is opened when the bed reaches its lowest level-thus breaking the light circuit. This light serves as a signal, for example, in a darkened room to a nurse or attendant that the bed is not in its lowest position which is normally considered the safest position for most patients especially during the night.
- said first switch means includes a relay having a coil and normally open contacts connected in series with said motor and said source of power; a push-actuated switch connected in circuit with said coil to energize the same when said push switch is actuated by an attendant; and limit switch means associated with said bed for opening the circuit to said coil when said bed section has reached a predetermined position, said second switch means being connected in circuit with said coil to energize the same when said second switch means is closed independent of the closing of said first switch means.
- each of said forward and reverse switch means of said pendant control means is a two-position switch having a normally closed contact and a normally open contact, said normally closed contacts being interconnected when said forward and reverse switches are in their normal positions and said interconnected positions being connected in series with both of said relay coils whereby both of said relay coils will be de-energized when either of said forward and reverse pendant control means switches is actuated.
- a control system for a power-operated bed having a reversible motor for moving a section of the bed between a first and a second limit position comprising: a control panel at the footboard of said bed and including a forward and a reverse switch actuatable by an attendant, each such switch including a set of normally open contacts and a set of normally closed contacts, a first and a second limit switch arranged to open respectively at said first and said second limit positions of said section, a forward and a reverse relay each including a coil and a pair of normally closed contacts; means connecting said sets of normally open contacts of said forward and reverse relays respectively with the forward and reverse terminals of said motor; a pendant control included, a forward and a reverse switch each including a movable contact, a normally closed contact, and a normally open contact; first conductive means for connectin the movable contact and normally closed contact 0 said pendant forward switch, said normally open contacts of said footboard forward switch, the coil of said forward relay, the normally closed contacts of said footboard reverse switch, and said
Landscapes
- Health & Medical Sciences (AREA)
- Nursing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11459071A | 1971-02-11 | 1971-02-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3697846A true US3697846A (en) | 1972-10-10 |
Family
ID=22356186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US114590A Expired - Lifetime US3697846A (en) | 1971-02-11 | 1971-02-11 | Control system for hospital bed |
Country Status (2)
Country | Link |
---|---|
US (1) | US3697846A (en) |
CA (1) | CA950089A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USB380310I5 (en) * | 1971-10-08 | 1975-01-28 | ||
US3979649A (en) * | 1974-08-09 | 1976-09-07 | Persha Gerald C | Remote searchlight control system |
US4146826A (en) * | 1976-01-26 | 1979-03-27 | Rca Corporation | Gto bi-directional motor control circuit |
US4507703A (en) * | 1982-08-16 | 1985-03-26 | Siemens Aktiengesellschaft | System for error-protected operation of multipanel, power distribution network switches |
US4610632A (en) * | 1984-05-14 | 1986-09-09 | Osborne Edward W | Electric boat motor |
EP0552502A2 (en) * | 1991-12-30 | 1993-07-28 | Wissner-Bosserhoff GmbH & Co. KG | Control unit for care-bed lifting device |
WO2001070165A1 (en) * | 2000-03-20 | 2001-09-27 | Dewert Antriebs- Und Systemtechnik Gmbh & Co. Kg | Electromotive drive unit for beds and tables |
EP1064904A3 (en) * | 1999-06-29 | 2002-08-21 | Dewert Antriebs- und Systemtechnik GmbH & Co. KG | Electromotive driving arrangement for furniture |
US20050029980A1 (en) * | 2001-12-07 | 2005-02-10 | Ralf Bokamper | Electric motor drive for a piece of furniture |
US20090200977A1 (en) * | 2008-02-11 | 2009-08-13 | Robert Dion Jones | Wall saver |
US20110169653A1 (en) * | 2010-01-14 | 2011-07-14 | Jack Xiao Peng Wang | Person-support apparatus height indicator |
US8344860B2 (en) | 2004-08-02 | 2013-01-01 | Hill-Rom Services, Inc. | Patient support apparatus alert system |
US8400311B2 (en) | 1999-03-05 | 2013-03-19 | Hill-Rom Services, Inc. | Hospital bed having alert light |
US8464380B2 (en) | 2005-07-08 | 2013-06-18 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
US8537008B2 (en) | 2008-09-19 | 2013-09-17 | Hill-Rom Services, Inc. | Bed status indicators |
US9655798B2 (en) | 2013-03-14 | 2017-05-23 | Hill-Rom Services, Inc. | Multi-alert lights for hospital bed |
EP3437617A1 (en) * | 2017-08-03 | 2019-02-06 | Wissner-Bosserhoff GmbH | Bed with a control system comprising an operating unit and a control unit with interfaces for wireless relaying of control signals |
US10206836B2 (en) | 2011-11-11 | 2019-02-19 | Hill-Rom Services, Inc. | Bed exit alerts for person support apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2621037A (en) * | 1950-08-26 | 1952-12-09 | Gen Motors Corp | Window actuator control |
US3218531A (en) * | 1962-06-06 | 1965-11-16 | Johnson Service Co | Local and remote control system for motor controlled equipment |
-
1971
- 1971-02-11 US US114590A patent/US3697846A/en not_active Expired - Lifetime
- 1971-08-18 CA CA120,837A patent/CA950089A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2621037A (en) * | 1950-08-26 | 1952-12-09 | Gen Motors Corp | Window actuator control |
US3218531A (en) * | 1962-06-06 | 1965-11-16 | Johnson Service Co | Local and remote control system for motor controlled equipment |
Cited By (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USB380310I5 (en) * | 1971-10-08 | 1975-01-28 | ||
US3921048A (en) * | 1971-10-08 | 1975-11-18 | Borg Warner | Solid state control for hospital bed motors |
US3979649A (en) * | 1974-08-09 | 1976-09-07 | Persha Gerald C | Remote searchlight control system |
US4146826A (en) * | 1976-01-26 | 1979-03-27 | Rca Corporation | Gto bi-directional motor control circuit |
US4507703A (en) * | 1982-08-16 | 1985-03-26 | Siemens Aktiengesellschaft | System for error-protected operation of multipanel, power distribution network switches |
US4610632A (en) * | 1984-05-14 | 1986-09-09 | Osborne Edward W | Electric boat motor |
EP0552502A2 (en) * | 1991-12-30 | 1993-07-28 | Wissner-Bosserhoff GmbH & Co. KG | Control unit for care-bed lifting device |
EP0552502A3 (en) * | 1991-12-30 | 1995-02-15 | Helmut Koetter | Control unit for care-bed lifting device |
US8400311B2 (en) | 1999-03-05 | 2013-03-19 | Hill-Rom Services, Inc. | Hospital bed having alert light |
US8830070B2 (en) | 1999-03-05 | 2014-09-09 | Hill-Rom Services, Inc. | Hospital bed having alert light |
US8525682B2 (en) | 1999-03-05 | 2013-09-03 | Hill-Rom Services, Inc. | Hospital bed having alert light |
EP1064904A3 (en) * | 1999-06-29 | 2002-08-21 | Dewert Antriebs- und Systemtechnik GmbH & Co. KG | Electromotive driving arrangement for furniture |
WO2001070165A1 (en) * | 2000-03-20 | 2001-09-27 | Dewert Antriebs- Und Systemtechnik Gmbh & Co. Kg | Electromotive drive unit for beds and tables |
US20050029980A1 (en) * | 2001-12-07 | 2005-02-10 | Ralf Bokamper | Electric motor drive for a piece of furniture |
US6954049B2 (en) * | 2001-12-07 | 2005-10-11 | Dewert Anttruebs-Und Systemtechnik Gmbh & Co. Kg | Electric motor drive for a piece of furniture |
US8344860B2 (en) | 2004-08-02 | 2013-01-01 | Hill-Rom Services, Inc. | Patient support apparatus alert system |
US10561550B2 (en) | 2005-07-08 | 2020-02-18 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
US9220650B2 (en) | 2005-07-08 | 2015-12-29 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
US8464380B2 (en) | 2005-07-08 | 2013-06-18 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
US7932690B2 (en) * | 2008-02-11 | 2011-04-26 | Robert Dion Jones | Wall saver |
US20090200977A1 (en) * | 2008-02-11 | 2009-08-13 | Robert Dion Jones | Wall saver |
US8593284B2 (en) | 2008-09-19 | 2013-11-26 | Hill-Rom Services, Inc. | System and method for reporting status of a bed |
US8537008B2 (en) | 2008-09-19 | 2013-09-17 | Hill-Rom Services, Inc. | Bed status indicators |
US8847756B2 (en) | 2008-09-19 | 2014-09-30 | Hill-Rom Services, Inc. | Bed status indicators |
EP2345396A3 (en) * | 2010-01-14 | 2011-08-31 | Hill-Rom Services, Inc. | Person-support apparatus height indicator |
US20110169653A1 (en) * | 2010-01-14 | 2011-07-14 | Jack Xiao Peng Wang | Person-support apparatus height indicator |
US10206836B2 (en) | 2011-11-11 | 2019-02-19 | Hill-Rom Services, Inc. | Bed exit alerts for person support apparatus |
US9655798B2 (en) | 2013-03-14 | 2017-05-23 | Hill-Rom Services, Inc. | Multi-alert lights for hospital bed |
EP3437617A1 (en) * | 2017-08-03 | 2019-02-06 | Wissner-Bosserhoff GmbH | Bed with a control system comprising an operating unit and a control unit with interfaces for wireless relaying of control signals |
US10973717B2 (en) | 2017-08-03 | 2021-04-13 | Wissner-Bosserhoff Gmbh | Bed having a control system comprising a control unit and a control unit having interfaces for a wireless transmission of control signals |
Also Published As
Publication number | Publication date |
---|---|
CA950089A (en) | 1974-06-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: HAMILTON INDUSTRIES, INC., WISCONSIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION;REEL/FRAME:004013/0243 Effective date: 19820628 Owner name: HAMILTON INDUSTRIES, INC., 1316 18TH ST., TWO RIVE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN HOSPITAL SUPPLY CORPORATION;REEL/FRAME:004013/0243 Effective date: 19820628 |
|
AS | Assignment |
Owner name: HAMILTON INDUSTRIES, INC., ILLINOIS Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION;REEL/FRAME:004238/0072 Effective date: 19820628 Owner name: HAMILTON INDUSTRIES, INC. 555 SKOKIE BLVD., SUITE Free format text: SECURITY INTEREST;ASSIGNOR:AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, A NATIONAL BANKING ASSOCIATION;REEL/FRAME:004238/0072 Effective date: 19820628 |