U.S. patent number 3,599,200 [Application Number 04/882,121] was granted by the patent office on 1971-08-10 for doctors register.
This patent grant is currently assigned to Bunting Sterisystems, Inc.. Invention is credited to Earl L. Bunting.
United States Patent |
3,599,200 |
Bunting |
August 10, 1971 |
DOCTORS REGISTER
Abstract
A doctors register system for hospitals or the like adapted to
simultaneously indicate by a signal at a plurality of stations
located in different parts of the hospital whether the doctor has
checked in or out of the hospital, said system being capable of
being actuated from any of the stations each of which has a
plurality of units, one for each doctor, with the corresponding
units in the stations connected together. Also, means can be
provided for altering the character of the signal to provide
additional information.
Inventors: |
Bunting; Earl L. (Westport,
CT) |
Assignee: |
Bunting Sterisystems, Inc.
(Bridgeport, CT)
|
Family
ID: |
25379926 |
Appl.
No.: |
04/882,121 |
Filed: |
December 4, 1969 |
Current U.S.
Class: |
340/286.07;
340/287; 340/332; 340/8.1 |
Current CPC
Class: |
G08B
5/36 (20130101); G08B 3/1008 (20130101) |
Current International
Class: |
G08B
5/22 (20060101); G08B 5/36 (20060101); G08B
3/00 (20060101); G08B 3/10 (20060101); G08b
005/22 () |
Field of
Search: |
;340/311,312,313,286,287,226,213.1,213.2,330,372,332
;307/252.10,252.54 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Yusko; Donald J.
Assistant Examiner: Wannisky; William M.
Claims
I claim:
1. A doctors register comprising a plurality of stations, each
having a plurality of signaling units, one for each doctor, said
units comprising an electric signal means and including a normally
open control switch means, means connecting the signal means of
corresponding units at each station in a series circuit connected
to a source of DC voltage, a silicon controlled rectifier connected
in the series circuit before the last signal means, said silicon
controlled rectifier being normally nonconductive and rendering
said signal means inoperative, initial operation of any one of the
normally open control switch means causing said rectifier to become
conductive and said signal means in all stations to become
operative and subsequent operation of said normally open control
switch means rendering the rectifier nonconductive and said signal
means inoperative.
2. The invention as defined in claim 1 wherein means is provided at
one station for altering the character of the signal means to give
a distinctive signal.
3. The invention as defined in claim 1 wherein said silicon
controlled rectifier has an anode, gate and cathode with the anode
connected to the cathode through a condenser and also to said
normally open switch means with said switch means including a
condenser connected to ground, said gate being connected to ground
through a resistance, and said cathode connected to ground through
a condenser in parallel with the last lamp.
Description
Heretofore, it has been the practice when a doctor arrives at a
hospital for him to check in at a central station, preferably
adjacent the telephone operator, by inserting a card or the like
indicator on a board. When he leaves the hospital, he must return
to the central station to check out and remove the card or the like
indicator.
This has several disadvantages in that it is inconvenient and does
not give the full information required. It is inconvenient because
the doctor, no matter by which entrance he enters the hospital,
must go to the central station to check in and no matter where he
is in the hospital, he must go back to the central station to check
out. It also has the disadvantage in that it provides an indication
of the doctor's presence only at the central station.
The present invention overcomes these difficulties by providing a
system in which there are a plurality of stations, preferably one
adjacent each entrance and also a station adjacent the telephone
operator, so that the doctor can check in or out of the hospital
from any of the stations by actuating the doctors unit at such
station which simultaneously actuates all of the corresponding
doctors units at all of the other stations in the hospital, thus
providing a plurality of places wherein the information as to the
presence or absence of the doctor will be readily shown.
This is accomplished by providing a plurality of stations, each
with a plurality of units, one for each doctor. A corresponding
unit at each of the stations is connected in a series circuit which
is provided with means controlled by a normally open switch at any
of the stations for simultaneously rendering the signals at all of
the stations operative or inoperative to indicate the presence or
absence of the doctor. The series circuit is simple and easily
controlled, is operable on low voltage DC, contains a minimum
number of components, and is easy and convenient to operate.
A feature of the present invention resides in the fact that the
doctor may come into the hospital by one entrance and may leave by
another, and by actuating the switch on the unit at the station
adjacent each entrance or exit, he can control the signal means
throughout the hospital.
Another feature of the invention resides in the fact that at one
station, preferably the telephone operator station, means may be
provided for altering the character of the signal so as to provide
different information as may be required; for example, to indicate
that the doctor has a call or that the doctor should contact the
telephone operator for information.
Other features and advantages of the invention will be apparent
from the specification and claims when considered in connection
with the accompanying drawings in which:
FIG. 1 is a plan view of a panel at a station.
FIG. 2 is a diagrammatic view of the circuit for corresponding
signal units for each doctor.
As shown in the drawings, a panel 10 comprises a plurality of
signaling units 11, one for each doctor. These signaling units
include an electric signal, herein illustrated as a light 12 and a
switch means 13 including a normally open switch 14. The panels are
positioned at stations disposed about the hospital in convenient
locations, for example adjacent each entrance to the hospital and
adjacent the telephone operator.
The lights 12 in each of the panels at the stations which designate
a doctor are all connected together in a series circuit, one of
which is shown in FIG. 2, wherein station 10a is the station
adjacent the telephone operator, station 10b is the last station in
the series which may be at any location, preferably adjacent an
entrance, and stations 10 are the stations at other locations which
may be adjacent an entrance.
The series circuit is connected to a source of DC voltage 15
sufficient to operate all of the lights. As illustrated, the series
circuit is connected to the DC source to a movable contact 16 of a
switch 17 so as to change the character of the signal. The switch
has a fixed contact 18 directly connected to the DC source 15 and a
fixed contact 19 connected through a flasher 20 to the source of DC
voltage 15. By moving the contact 16 into engagement with the
contact 18 the lights will be directly connected to the DC source
and energized to provide a continuous light and when the switch
contact 16 is moved into engagement with the contact 19, the lights
will be connected to the DC source through the flasher 20 to change
the character of the signal by providing a flashing light. This
change in character of the signal could indicate to the doctor that
he has a call or is to contact the operator. To maintain the
circuit energized during movement of the movable contact 16 to one
of the fixed contacts or during the operation of the flasher, the
movable contact is connected to the source through a resistor 21 as
shown in FIG. 2.
To provide means for controlling the series circuit from any of the
stations, a silicon controlled rectifier 25 having an anode 26, a
gate 27 and a cathode 28 is connected in the series circuit and to
ground through the last light 12b, as shown in FIG. 2. In
accordance with the present invention, the silicon controlled
rectifier has its gate connected to ground through resistor 30; its
cathode 28 is connected to ground through condenser 31 in parallel
with the light 12b, its anode is connected through a condenser 32
to its anode. The anode is also connected to the control switch
means 13 in each station which includes a normally open switch 14
connected through a condenser 33 and a resistor 34 to ground, as
shown in FIG. 2.
In operation the silicon controlled rectifier 25 is normally
nonconductive so that the lights in the series circuit are not
operated. When a doctor enters a hospital, he presses his unit 11
on the panel nearest the entrance and momentarily closes the
normally open switch 14. This causes the condenser 32 to discharge,
making the cathode negative with respect to ground and causes the
silicon controlled rectifier to become conductive, whereupon the
series circuit is completed and simultaneously lights up all of the
lights in the circuit to provide a continuous light if the switch
17 has contact 16 in engagement with contact 18. This will indicate
in all of the stations located around the hospital that the doctor
is in the hospital.
If there is a call for the doctor, the switch contact 16 is moved
by the telephone operator to engage contact 19 and all of the
signals will be changed to a flashing light advising the doctor of
the call.
When the doctor is checking out of the hospital, he presses on the
unit 11 adjacent the exit and momentarily closes the normally open
switch 14 at the station. This draws off from the anode through the
resistor 34 and capacitor 33 enough voltage to make the anode minus
with respect to the cathode and thus render the silicon controlled
rectifier 25 nonconductive and simultaneously extinguish all of the
lights. Resistor 34 will discharge the condenser after each action
so that a discharged condenser is inserted into the circuit by the
action of switch 14.
If desired, each of the lights can have a resistor 40 in parallel
therewith to maintain continuity of the series circuit in the event
that one or more burn out. Should a light burn out, the resistance
40 will be effective to reduce the current in the circuit and cause
the other lights to be dimmed and indicate a burned out light which
should be replaced.
Thus, it will be seen that the present novel, simple system is
operable from any of the stations located throughout the hospital
to be energized or deenergized for the purpose of indicating the
presence of the doctor in the hospital, thus eliminating the
necessity of the doctor checking in at the central station, and
also quickly advises the doctor of the requirement to call the
telephone operator, or such other information as may be indicated
by a flashing light.
Variations and modifications may be made within the scope of the
claims and portions of the improvements may be used without
others.
* * * * *