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Патент USA US3036192

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May 22, 1962
M. FELTEN
3,036,183
ARMCHAIR KEY SWITCHES
Filed Jan. 24, 1961
INVENTOR.
BY
Major Fe/fen
“"1 “T”
United States Patent 0
C6
3,036,183
Patented May 22, 1962
1
2
3,036,183
Referring to FIGURE 2 it is seen to be provided with
ARMCHAIR KEY SWITCHES
a horizontal cross-wise elongated slot 19‘ proximate its
Major Felten, Galesteo, N. Mex.
(P.O. Box 2233, Santa Fe, N. Mex.)
rearward end to pivot on and translate forward and aft
on pivot pin 21 best seen in FIGURE 4. Pin 21 is sup
ported with a snug ?t in cross-wise bore or socket 23 in
Filed Jan. 24, 1961, Ser. No. 84,618
4 Claims. (Cl. 200-159)
This invention relates to manually operated electric
switches and more particularly to a slide operated switch
having characteristics which especially suit it for arm
chair use for the muting of loudspeakers.
body element 11.
When key 13 is nested in the body element 13 channel,
and pin 21 is in place, the operator element is free to
rotate about pin 21 in a limited arc and also free to move
back and forth due to the provision of slot 11.
The underside of the forward end of operator element
13 is relieved in step fashion to provide lip 25. Lip 25
cooperates with upper surface 27 of body nose 17 to stop
the downward motion and to provide a guide for forward
A switch for armchair use must be capable of opera
tion by a force so slight it will not be displaced from the
chair ‘arm. It must be capable of operation by one hand
of the user. It should be economical in cost, rugged in 15 sliding motion key 13 when urged downward and forward
construction and foolproof in operation.
by the fore?nger of the user.
The improved switch of the present invention ful?lls
Referring to FIGURES 1 and 2, it is seen that the
the foregoing requirements in a manner described in the
inner surface of nose portion 17 of the stationary body
following description read with reference to the accom
is provided with two stepped surfaces 29 and 31. A ?at
panying drawing made a part of this speci?cation and in 20 electrical contact element 33 is supported against the
which
underside of the ?rst step 29 which is the one proximate
FIGURE 1 is an isometric view partly in section.
the forward end of the stationary body portion 11 chan
FIGURE 2 is a longitudinal central sectional view on
section 2—2 of FIGURE 1.
nel. The flat contact may be supported in any convenient
manner and in the embodiment shown, see particularly
FIGURE 3 is a cross sectional view on section 3-—3 of 25 FIGURE 3, it is integral with a depending metallic strap
FIGURE 1.
FIGURE 4 is a cross sectional view on section 4—4 of
‘35 which ?ts in a recess 37 in the side wall of the relieved
nose portion. A horizontal extension ‘41 of the depend
ing strap is nested in a relieved portion of the base of the
FIGURE 1.
FIGURE 5 shows an alternative embodiment.
nose portion ‘and secures the entire contact member as
Referring to the drawing, FIGURE 1, the switch com 30 by screw or screws 39. The horizontal extension or tab
prises a body element 11 and an operator element 13.
41 provides a terminal for the switch contact element 33.
Both the body element and the operator element are pref
The other switch contact element 43 is a?ixed to the
erably formed of insulation material such as, for example,
bottom surface of key 13 by an elongated extension por
wood, rubber or synthetic plastic. Stationary body ele~
ment 11 is an elongated hollow member having a gently
convex upper con?guration inclined downwardly from
front to rear in a generally streamlined fashion. The lat
eral walls also taper from front to rear. The bottom edge
of the opposed side walls and end walls of the body may
lie on a common plane at the bottom to provide a gen
tion 45. An offset portion 47 is provided preferably in
tegral with contact portion 43 and extension. 45 of a length
such that when the operator element 11 is depressed the
contact element 43 lies in a plane slightly below the sec
ond step 31 of nose 17. This clearance permits the oper
40 ator to be moved forward so that contact element 43 will -
rest and be retained under insulator ledge 3\1~to maintain
the switch in “o?” position.
When key 13 is moved backward to the limit permitted
elongated recesses 12. The foregoing described shape is
by slot 19, contact element 43 clears ledge 31 and is free
such as to permit the palm of the hand to straddle the
to rise and contact stationary contact element 33 there
switch body with the thumb on one side resting in the 45 by
“olosing” the switch.
erally ?at surface for resting on an armchair. The lateral
exterior surfaces of the switch body are provided with
?ute and the remaining ?ngers other than the fore?nger
resting in the ?ute on the other side of the housing, there
by grasping the switch.
It is necessary in a switch for the purpose herein in
tended that it have an “easy” action. The user’s ?nger
depresses the key 13 and resilient means of gentle action
The movable operator element 13, hereinafter termed
must be provided to cause the key to be urged in an up
“key,” is the switch actuating handle. This member open 50 ward direction. To this end cantilever blade spring 51
circuits the switch by a ?rst downward and then a for
is provided. Spring 51 is anchored in a recess 53 (see
ward motion. To this end a recess 14 is provided in
FIGURES
2 and 5) in the tail end of stationary body por
which the fore?nger rests. The grasping of the stationary
tion 11. ‘It has an inherent upward curve ending in the
body element 11 by one hand with the index ?nger rest
ing in the key recess 14 of movable operator element ‘13 55 front end in a downturned anti-friction bent portion 55.
The upper surface of bent portion 55 makes electrical
enables the user to operate the switch in a completely
comfortable and convenient manner with the forearm and
hand in reclined position as on the arm of an armchair.
Stationary body element 11 is provided with an elon
gated channel of rectangular cross section which extends
through the body from top to bottom except at the ends.
At the rear or tail end a bridge 15 joins the channel walls
and at the front end a solid nose portion 17 of the body
13 is provided.
Key 13 has a loose or clearance ?t in the body element
11 channel in order that it can be moved within the body
contact at all times with the extension portion 45 of con
tact element 43. A conducting lead 57 is electrically
connected to spring 51. A second conducting lead 59 is
connected to stationary contact terminal 41 and the two
leads pass out of the switch body through a bore or per
foration 61 for the purpose provided preferably in nose
portion 17.
The bottom of the switch assembly is closed by a sheet
65 or plate of insulating material 63 which is glued in place.
The bottom surface of the switch stationary body 11
is shown to be ?at in the embodiment described but bear
ing in mind that a primary purpose of the switch requires
less manner.
that it be utilized on an armchair arm, it obviously can
Key 13 is provided with a substantially ?at bottom sur
70 be contoured when the occasion demands to more closely
face and an arcuate upper surface similar in con?guration
?t a curved or rounded upper surface of an armchair arm.
to the top surface of body element 11.
element to close or open the switch contacts in a friction
It is also contemplated that ‘the switch body and key
3,036,183
may be ofmolded construction.
4
portion the key portion over the relief in the front’ end
In this event the con
is in a superposed position over the body nose-portion -
struction can be simpli?ed to provide the pivoted and
sliding support of the tail end of the key in the tail end
of the bottom portion. The tail end of body 11 is closed
upon itself by the bottom portion 15, the side walls and
upper surface, ?rst and second stepped depending ledge
portions on the underside of the upper wall of the body
nose portion, said second ledge depending a greater dis
tance than the ?rst ledge, a ?rst electrical contact ele
ment a?ixed to the bottom surface of the ?rst'ledge, a
second electrical contact element having an elongated
portion, a depending portion and a forward extending
forwardly extending top portion 65. The construction
provides an elongated socket 67 into which the tail end
of the key is seated and in which it has limited but fric
tionless freedom of motion with respect to pivoting and .
portion, and having the elongated portion at?xed to the
underside of the key and said forward extending portion
being coextensive with the key front end relief, resilient
spring means urging said key upward, whereby when the
forward and rearward motion. The key‘1'3 is provided
with‘a reduced tail portion 69 of generally uniform cross
section to ?t in socket 67. In this embodiment the switch
contact 43 is left in a depending direction'until after'the
key is in rearward position, the contacts are connected
key is positioned in body portion 11. The contact 43 is
then bent forwardly to provide the contact’ element and 15 and when the key is depressed and moved forwardly, the '
second contact rests against the nose portion second ledge
also to secure the key within body portion 11. In this
thereby maintaining the contacts in unconnected reiation.
embodiment, the slot 19, pivot pin 21, and cross-wise
socket 23 of the ?rst embodiment described are not neces-
2. The switch of claim 1 in which the body portion '
‘
and key element taper down laterally and vertically from
nose portion to rear portion, said body portion being
'20
It is therefore seen that there has been provided by
with a lengthwise elongated ?ute on each lateral
this invention an electrical switch particularly adapted for 7 provided
wall, and a recess in the key forward end top surface
easy and convenient operation on an armchair by the
whereby said switch may be grasped by the reclined hand
inclined arm and hand. Obviously, it may pro?tably be
with the fore?nger in the key recess to thereby manually
used as a push button switch in other ‘situations where
select an off or on electrical condition ‘for said switch.
apush button switch not anchored down may be easily
3. The switch of claim 1 wherein the means for pivot
operated by one hand as adjacent a telephone, for ex
ably and slidingly affixing the keyrearward end to the
ample.
housing tail portion is a journal pin affixed crosswise in
Because many possible embodiments rnay be made of
said housing and a-journal-pin cooperating slot in the key
the above ‘invention and as many changes might be made -30
sarry.
.
.
rearward end portion.
in the embodiments above set forth, it is to be under
stood that all matter hereinabove set forth as shown in
the accompanying drawing is to be interpreted as illustra
ably and slidingly a?ixing the key rearward end to the
housing tail portion isa socket in the housing/tail portion
tive and not in a limiting sense.
What is claimed is:
‘ 1. An electrical switch comprising an elongated hous
‘
4. The switch of claim 1 wherein the means for pivot
provided by the housing rear end floor, lateral walls, and
35 a forward extending wall over the housing rear end ?oor,
ing of insulation material, and an elongated switch operat
ing bar key of insulation material, said housing having
and said key rearward portion having a clearance ?t
in said socket.
spaced elongated side walls joined at a front end by a
nose portion and at the other end by a tail portion, said
key having a width which provides a clearance ?t in the
References Cited in the’ ?le of this patent
space between the side walls and’ having aforward end
and a rearward end, said forward end being relieved on
itsunderside, means, pivotably. and slidingly affixing the
, key rearward end’ to the housing tail portion, said key - 45
having a length such that when ‘it is so affixed to the body
UNITED STATES PATENTS
1,388,165
Bronie __________ __g_r__ Aug. 23, 1921
2,445,635
Poliakotf ______ -g ____ __ July 20, 1948
2,676,217
Garbs _________ ___._____'_ Apr. 20, 1954
VVerkuil ______________ _.'_ Sept. 4, 1956
2,761,936
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