close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405735

код для вставки
Aug., m, w45.
Y
W, P. CRQCKET-r'
’HOSPITAL PLUG CONNECTION,
Fíled'Jan. 24, 1944
27
/fl//AMI
`\"gg
"E
_E
'
¿405335
Patented Aug. 13, 1946
'2,405,735
UNITED STATES PATENT OFFICE
t
2,405,735. '
l
HOSPITAL `PLUG CONNECTION'>
ÍWi-lliam
Crockett, Chicago, Ill., assignor to
S. H.. Couch Company, Inc.,> North Quincy,`
Mass.,v a. corporation of Massachusetts
-
Application January» 24, 1944,; SerialLNo. 519,523-r
4.C..laîms. (Cl. 200e-51)
1
2
Thisinventionhastodo with'l hospital plug. con
trical circuits are provided> for in the connection,`
nectionsgof‘ the type in which the signal.y or signals.
controlled bythe push button on the- cord lead
ing to the patient’s bed are. automatically actu:-`
ated. in. thel event> the. plug. isinadvertently pulled
from the connection..
The principal object_of theinvention is. to. pro
vide an> improved hospital plug. connection ofthe
type. described which issimplein design, inexpen
sive tofmanuiacture, dependable,inkoperatiom and
easy »to shutoiî.
one ordinarily lights» a signal lamp 20 on the face
plate, another lights> a lamp over` the outside of
the; door leading in_to the» room, another. lights a
lamp at, the nurses’ central station and another
sounds an annunciator.
Five openings I6 are employed in this particu
lar connection, to enable fourI electrical circuits to
be» handled, but a lesser or greater number might
instead> be employed, depending onV the number
off circuits desired. The ñve openings It> are ar
Othermorespeciñc objects and advantagesv of
ranged in a circle about,y the front- of the cylindri
the invention will» be apparent-.tothose skilled. in
calfA portion I4, and are spaced apart one-sixth the
the art upon afull understanding ofthe construc
distance about the circle, leaving a substantial
l5 gap, at. 25|; between the two uppermost openings.
tion andthe operation of the new. connection.
A preferred embodiment. of the invention is
tof insure the contacts; Il being inserted, in the
presented herein byway of'exempliiication, but it
correct openings. The cylindrical portion I4
will; of; course be appreciated that the invention
contains a disk 22 of insulatingÍ material which is
is> susceptible of incorporation in other structur
provided with. a plurality of; openings 2-.3 inreg
ally modifiedv forms coming equally. within the> 20 ister- withV the openings It. The openings 23 are
scope of the appended claims,
'
ofw slightly smaller size than the openings I6 to
In the accompanying drawing:
prevent; the contacts I‘I from being short circuitedV
through theA cylindrical portion I4 when the plug
Fig. 1y is a face View of a hospital plug connec
t8. is i-n place.
tion constructed in accordance with ther inven
tion;
Y
,
Fig, 2. is a side View of the connection, showing
theplug used with the same ;
Fig. 3 is a vertical section throughthe connec
A. block 24 of insulating material is; positioned
behind the diskY 2-2 in rearwardly spaced relation
tothe; same. The block 24' is, substantially cylin
drical in shape and is provided about its periphery
withsix longitudinally extending grooves 2.5. The
tion., taken on the line 3,-3 of Fig; 1, showing it
with the plug removed andthe several signal? con 30 uppermost one of theseA groovesy forms a seat` for
one. leg of an L-shapedy bracket 26. The bracket
trolling contacts shortcircuited;Fig. 4 is.Y another vertical section through the
is secured> within the groove by a screw 21, and
the upstanding leg, of the bracketV is- welded or
connection, taken on the line 4-.4' of.' Fig. 3; and
Fig. 5 is a section similar-to Fig. 4‘,V showing-the
otherwisesecured tothe backV oi the flange I5 of
the. spanner» plate. The remaining grooves 25
connection with the switch in the same manuallyy
form seats for the reception of ñve` leaf spring
setto hold the several. circuits open.
contacts.v 28 which project forwardly` from the
The hospital> plugy connectionV shown in the
grooves into positions where they will bear resil
drawing includes aiace plate Ill-which is adapted
iently against the outer sides of the contacts I‘I
to be attacl'iedY by screws> II tothe wall of the
patient’s room. The face plate lllcontains a. cir 40 when the plug I8î is in place. The rear ends of`
cularV aperture I2 in» which a spanner plate I3 is>
the` contacts 28 are rigidly held within thegrooves
positioned; The spanner plate I3 has a cylindri
2.5; by screws 29 which also support connectors 30
cal portion t4 which projects forwardly through
for. the several electrical circuits.` One of the
the apertureand a radial ñange I5; which is weld
connectors 3G carries the current, whilel the other
ed orV otherwise secured to the back; of the face 45 connectors lead tothe various signalling devices.
plate about the aperture; The; cylindricalporti-on
The block 24 is supported. at its center on a
stud- 3I. The stud 3l isl provided in front of` the
Ill- of thespanner plate is provided in the front of
block 24 with an enlarged portion 32r and is: pro
the same with a. plurality of- openings IB' for' the
videdv inj- front of such enlarged portion with a
reception. of a corresponding number of prong
shaped contacts Il on a removablepliig I8. ’Ijhe 50 reduced portion 33, which reduced portion ex
tends through the disk 22 and is riveted or other
plug I8 isattached to one end of a cord I9„ andk
wisesecured to the center ofthe cylindrical por
av push button (not shown) is attached to the.
tion I4. of they spanner plate.. A disk 3.4 of insu
other end of the cord. When the patient oper
lating material is ÍìXedly clampedv between the`
ates the push button several electrical Circuits.
will be, simultaneously closed. Where four elec
enlarged portion 32 ofthe4 stud and thcdisk 2.2,
-
2,405,735
3
4
and a disk 35 of conducting material having an
insert 35 of insulating material is ñxedly clamped
between the front of the block 24 and the enlarged
portion 32. »The rear end 31 of the stud is thread
ed and is engaged by a nut 38 which secures the
block 24 in place.
are adapted to move into engagement when dis
engaged by the contacts on the plug, whereby to
automatically close the circuits leading from the
connection when the plug is pulled, a movable
circuit opening element which when moved man
ually into one position will force the contacts in
The periphery of the disk 35 vextends radially
the connection away from the circuit closing ele
ment,v means for moving lthe circuit opening ele
beyond the bottoms of the grooves 25 into a _po
sition wherein it will be engaged bythe leaf spring
ment vinto said position, andV means controlled by
contacts 28 when the latter are allowed to spring 10 and responsive to re-en'gagement of the plug and
socket contacts for automatically returning the
inwardly upon the withdrawal of the contacts
I'I on the plug I8. Such engagementwill short
circuit opening element to its original inoper
circuit the contacts 28, automatically energizing
ative position.
prevent this from happening'when not‘r‘jdesired,
or to open the circuits and keep them’open after'V
it has happened, a disk 39 of insulating material
it
,
2. In a hospital plug connection for use with
the circuits of the several signalling devices. ATo ~- »- '
a plug having aV plurality of contacts, a plurality
of socket contacts for engagement with the con
tacts on the plug, a stationary circuit closing ele
is rotatably mounted on the enlarged portion 32 .
ment with which the contacts in the connection
are adapted to move into engagement when dis
of the stud 3|, immediately in front of the shortV
circuiting disk 35. The disk 39 is of smaller di 20 engaged by the contacts on the plug, whereby to
automatically close the circuits leading from the
ameter than the disk 35 but is provided about its
periphery with live radially projecting bosses 4U
connection when the plug is pulled, a movable cir
cuit opening element which when moved manually
which are adapted to cam the five leaf spring -con
tacts 28 outwardly away from the disk 35 when
into one position will force 'the contacts in the con
lthe disk 39 is turned to bring the bosses 40 op 25 nection away> from >the circuit closing element,
posite the contacts.
Y
means for moving the circuit'opening element
into ksaid position, said movable circuit opening
YThe disk.- 35i-which constitutes in« effect l a
element being radially accessible for operation
switch-is provided with a ñnger piece 4| »which
extends upwardly through an arcuate slot 42 in
and being movable when the contacts in the con
the cylindrical portion I4 of the spanner‘plate 30 nectionA are engaged by the contacts on the plug,
and means controlled by and responsive to re
into an exposed and readily accessible position in
engagement of the plug and socket contacts for
front of the upper portion of theface plate.V 'I‘he
automatically returning the circuit opening ele
disk 39 is free to turn, and is normally held with
ment to its original inoperative position.
the bosses 40 'disengaged from the contacts 23
by a small wire spring 43 which is anchored to 35
3. In a hospital plug connection for use with
a plug having> a pluralityv of contacts, a plurality
Ythe Screw 2l and extends through a slot 44 in
the bracket 26 into engagement with one side 'of
of circularly -arranged socket contacts for engage
the ringer piece 4 I .
ment with the contacts on the plug, a stationary
-
`
Y
circuit closing element with which the contacts
4I to cause the bosses 40 to cam the contacts 28 40 in the connection‘are adapted to move radially in
When the disk 39 is moved by the finger piece
hold the disk in that position, but as soon as the
to engagement when disengaged by the contacts
on the plug, whereby to automatically close the
circuits leading from the connection when the
plugispulled, a rotatable circuit opening element
plug I8 is replaced the contacts I'I onlthe plug
i which when turned manually in one direction Awill
away from theshort circuiting disk 35, the» yield
ing resistance offered by the frictional engage
' ment of the contacts 28 with the bosses 40 will
will’cam the contacts 28 farther outwardly, reliev
force the contacts in the connection radially away
from the circuit closing element, means for ro
the disk 3S to return to its inoperative position
tating the circuit opening element in said direc
tion, and means controlled by and responsive to
under the action of the spring 43. Instead of us
ingï a spring for this purpose, a small weight 45V 50 re-engagement of the plug and socketcontacts for
automatically returning the circuit opening ele
can beattached tothe front face of the disk 39
ment to its'original inoperative position.
to accomplish the same result, or both the spring
ing ¿the pressure Aon the bosses 4U and allowing
' 4. In a`hospital plug connection for use with
43 and the weight 45 can be employed.v Y
a` plug having a plurality of contacts, a plurality
It willbe understood from the foregoing that
all of the circuits leading'from the connection 55 of 'circular-ly arranged socket contacts for en
will be automatically closed'in the event the plug
gagement with the contacts on the plug, a sta
is accidentally pulled from the connection, and
tionary circuit closing element with which the
that the circuits can be opened again by movingy
contacts in the connection are adapted to move
the finger piece 4I into its circuit opening posi
radially into engagement when `disengaged by the
tion. When the plug is intentionally pulled, as 00 contacts on theplug, whereby to automatically
when the bed isto be moved 0r the .wall of the
close the> circuits leading from the Vconnection
room to be cleaned, closing of the circuits can be
when the plugis pulled, a rotatable circuit open
prevented by moving the linger piece into its cir
ing element which when turned manually in one
cuit opening position and holding it momentarily
directionwill force the contacts in the connection
in that position While pulling theplug: After the 65 radially away from the circuit closing element,
plug has been pulled the ñnger piece will be held
means for rotating the circuit opening element
frictionally in its circuit opening position until
in said direction, and means controlled by and
responsive to re-engagement of the plug and
the plugY is again replaced, after which it Will re- Y
turn automatically into its inoperative position.
socket contacts for automatically returning the
Iclaim:
-
Y
l. In a hospital plug connection for use with
Y a plug having a plurality of contactsa plurality
circuit opening element to its original inoperative
position, said last mentioned means consisting of
a spring which will yield resiliently to permit the
of> socket contacts for engagement with the con-v
circuit> opening member to be turned into its op
tacts on the plug, a stationary circuit closing ele
erativeposition. `
ment with which the contacts in the connection
‘
’
"
`
"
,
WILLIAM
P.
CROCKETT.
Документ
Категория
Без категории
Просмотров
0
Размер файла
428 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа