U.S. patent number 3,744,339 [Application Number 05/172,730] was granted by the patent office on 1973-07-10 for adjustable cable stop.
Invention is credited to Arne I. Martinson.
United States Patent |
3,744,339 |
Martinson |
July 10, 1973 |
ADJUSTABLE CABLE STOP
Abstract
A bowden cable adjustable stop assembly for adjustably limiting
the movement of a bowden cable core in one direction relative to
the outer housing of the bowden cable. A mid-portion of the bowden
cable housing is omitted and a lock housing is connected in line
between the adjacent ends of the bowden cable housing end sections
with the end sections retained against longitudinal shifting
relative to the lock housing and the bowden cable core extending
through the housing and having an abutment member attached thereto
against longitudinal shifting along the core. A limit stop is
slidably supported from the housing for rectilinear movement along
a path generally paralleling the portion of the bowden cable core
extending through the housing and the abutment member is engageable
with the limit stop to limit movement of the cable core in a
direction shifting the abutment member toward the adjacent side of
the limit stop. Further coacting latch means carried by tye limit
stop and the lock housing are provided and include key operable
actuating means for releasably securing the limit stop in adjusted
shifted position relative to the housing, whereby the limit of
movement of the core of the bowden cable in one direction may be
adjusted.
Inventors: |
Martinson; Arne I. (Twin
Valley, MN) |
Family
ID: |
22628966 |
Appl.
No.: |
05/172,730 |
Filed: |
August 18, 1971 |
Current U.S.
Class: |
74/500.5; 188/2D;
74/565; 188/196M; 74/526 |
Current CPC
Class: |
F16C
1/101 (20130101); F16C 1/22 (20130101); Y10T
74/2063 (20150115); Y10T 74/20924 (20150115); Y10T
74/20402 (20150115) |
Current International
Class: |
F16C
1/10 (20060101); F16C 1/22 (20060101); F16c
001/10 () |
Field of
Search: |
;74/526,565,51R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Myhre; Charles J.
Assistant Examiner: Shoemaker; F. D.
Claims
I claim:
1. In combination, a reciprocable control member, a support
relative to which said control member is reciprocable, a stop
member mounted on said control member, an abutment member supported
from said support for adjustable positioning relative thereto along
a path generally paralleling the path of reciprocation of said
control member and engageable by said stop member to limit its
movement, and thus movement of said control member, in one
direction along said path of reciprocation of said control member,
and coacting lock means carried by said abutment member and support
actuatable to releasably lock said abutment member in selected
position relative to said support against movement in said one
direction, said lock means including means defining a ratchet
connection between said abutment member and said support affording
movement of the former relative to the latter in the opposite
direction when said lock means is actuated, but preventing movement
of said abutment member in said one direction.
2. In combination, a reciprocable control member, a support
relative to which said control member is reciprocable, a stop
member mounted on said control member, an abutment member supported
from said support for adjustable positioning relative thereto along
a path generally paralleling the path of reciprocation of said
control member and engageable by said stop member to limit movement
of said control member, in one direction along said path of
reciprocation of said control member, and coacting lock means
carried by said abutment member and support actuatable to
releasably lock said abutment member in selected position relative
to said support against movement in said one direction, said stop
member and control member including means supporting said stop
member from said control member for adjustable positioning
therealong in the path of reciprocation of said control member
relative to said support.
3. In combination, a reciprocable control member, a support
relative to which said control member is reciprocable, a stop
member mounted on said control member, an abutment member supported
from said support for adjustable positioning relative thereto along
a path generally paralleling the path of reciprocation of said
control member and engageable by said stop member to limit its
movement, and thus movement of said control member, in one
direction along said path of reciprocation of said control member,
and coacting lock means carried by said abutment member and support
actuatable to releasably lock said abutment member in selected
position relative to said support against movement in said one
direction, said reciprocable control member comprising the inner
flexible core of a cable assembly including an outer flexible
tubular housing enclosing said inner core.
4. The combination of claim 3 wherein an intermediate section of
said outer flexible tubular housing is omitted whereby said outer
flexible tubular housing is defined by a pair of axially spaced
housing end sections with adjacent ends, said support comprising a
hollow housing through which said cable assembly extends, said
adjacent ends of said cable sections being anchored relative to
remote portions of said housing, said stop member mounted on said
control member being disposed within said housing through which
said cable assembly extends.
5. The combination of claim 4 wherein said stop member is disposed
within said housing through which said cable assembly extends, an
inner wall surface of said housing including ratchet gear teeth
opening in said opposite direction and a retractable latch slide
carried by said abutment member for selective engagement with said
ratchet teeth.
6. The combination of claim 5 wherein said housing through which
said cable assembly extends includes a pair of half sections
secured together and separable along a line generally paralleling
said path, said remote portions of said last mentioned housing
defining half sleeve clamp portions clampingly engaged with said
adjacent ends of said cable housing sections.
7. The combination of claim 3 wherein said flexible core comprises
motion transmitting means for connecting a movable operator's
throttle control with a remotely located engine throttle
control.
8. The combination of claim 7 wherein said movement of said core in
said one direction functions to open said engine throttle control.
Description
The cable stop of the instant invention has been primarily designed
for use in conjunction with the throttle control of a boat,
snowmobile or other motor powered recreation vehicle.
Many families including young children own boats, snowmobiles or
other motor powered recreation vehicles and many rental agencies
rent similar vehicles to be operated by younger persons. However,
although a particular vehicle may be capable of speeds which can be
dangerous when not under the control of an experienced operator and
many of these vehicles are operated by younger persons with only
minimal operating experience, there are no throttle controls for
such vehicles which may be utilized to selectively limit the amount
the throttle of motor may be opened when the vehicle is being
operated by inexperienced persons.
It is accordingly the main object of this invention to provide a
throttle control cable stop of the adjustable type whereby the stop
may be actuated so as to limit the opening of the throttle of an
associated motor in an effective and dependable manner, thereby
rendering a particular motor powered vehicle safer by operation by
inexperienced persons.
Another object of this invention is to provide a throttle cable
stop of the adjustable type in accordance with the preceding object
and including means whereby the throttle cable limiting adjustment
components thereof may be locked in the desired operative condition
against unauthorized further adjustment to increase the maximum
throttle opening possible.
Still another object of this invention is to provide a throttle
cable stop of the adjustable type which may be readily deactivated
by authorized persons to enable full range operation of the
associated throttle cable, when desired.
A final object of this invention to be specifically enumerated
herein is to provide a throttle cable stop of the adjustable type
which will conform to conventional forms of manufacture, be of
simple construction and easy to use so as to provide a device that
will be economically feasible, long lasting and relatively trouble
free in operation.
These together with other objects and advantages which will become
subsequently apparent reside in the details of construction and
operation as more fully hereinafter described and claimed,
reference being had to the accompanying drawings forming a part
hereof, wherein like numerals refer to like parts throughout, and
in which:
FIG. 1 is a fragmentary perspective view of a mid-line portion of
the throttle cable of a motorboat with the adjustable cable stop of
the instant invention operatively associated with the throttle
cable;
FIG. 2 is an enlarged longitudinal vertical sectional view taken
substantially upon the plane indicated by the section line 2--2 of
FIG. 1;
FIG. 3 is a horizontal sectional view taken substantially upon the
plane indicated by the section line 3--3 of FIG. 2;
FIG. 4 is a transverse vertical sectional view taken substantially
upon the plane indicated by the section line 4--4 of FIG. 2.
Referring now more specifically to the drawings, the numeral 10
generally designates a bowden cable assembly utilized as a motion
transmitting device for transmitting movement of the hand operable
throttle actuator of a boat, snowmobile or other motorized vehicle
to a remotely located engine throttle control. The cable assembly
10 is of a conventional type including a flexible outer housing 12
and a flexible inner core 14. A mid-portion of the housing 12 is
omitted so as to define a pair of longitudinally spaced housing
sections 16 and 18. However, the core 14 extends through both of
the housing sections 16 and 18 and also bridges the space between
the adjacent ends of the housing sections 16.
The adjustable cable stop of the instant invention is referred to
in general by the reference numeral 20 and includes an elongated
housing 22 consisting of a pair of half sections 24 and 26 opening
toward each other along the centerline of the housing 22 and
secured together by means of suitable threaded fasteners 28 so as
to fully enclose the adjacent ends of the housing sections 16 and
18 and the full longitudinal extent of the portion of the core 14
extending between the sections 16 and 18.
The opposite ends of the housing 22 include integral clamp sleeves
30 and 32, each including a half clamp sleeve defined by the
corresponding housing section, and each clamp sleeve 30 and 32
includes a setscrew 34.
As may best be seen from FIGS. 2 through 4 of the drawings, the
housing sections 24 and 26 are secured about the cable 10 with the
clamp sleeves 30 and 32 clampingly engaged with the adjacent ends
of the housing sections 16 and 18 and the setscrews 34 retaining
the adjacent ends of the housing sections 16 and 18 within the
clamp sleeves 30 and 32, of the housing 22.
A split block clamp 36 defining an abutment member is clamped on
the core 14 between the housing sections 16 and 18 and the housing
section 24 includes rack type ratchet teeth 38 formed on the inner
surface of its side wall. Also, a limit stop slide body 40 is
provided and includes supporting guide flange portions 42 keyed in
and slidably supported within confronting grooves 44 formed in the
marginal portions of the housing sections 24 and 26 defining a
longitudinal slot 46 in the upper wall 48 of the housing 22.
The slide body 40 is of course supported from the housing 22 for
rectilinear movement along a path paralleling that portion of the
core 14 extending between the adjacent ends of the housing sections
16 and 18.
The slide body 40 includes a transverse bore 50 in which a latch
slide 52 is disposed and a compression spring 54 is seated in the
closed end of the blind bore 50 and bears against the inner end of
the latch slide 52 so as to urge the latter outwardly of the
transverse blind bore 50. The outer end 56 of the latch slide 52 is
contoured to engage with the ratchet teeth 38 and prevent movement
of the slide body 40 to the right as viewed in FIGS. 2 and 3 of the
drawings. However, inasmuch as the teeth 38 are ratchet teeth, it
will be appreciated that even when the latch slide is engaged with
the teeth 38 the slide block 40 may be moved to the left as viewed
in FIGS. 2 and 3 of the drawings.
The slide body 40 further includes a bore 58 in which a rotatable
lock cylinder 60 is received. Of course, the lock cylinder 60 is
key operable and includes a radially projecting tongue 62 which
projects into a laterally opening notch 64 formed in the latch
slide 52. Thus, when the key 66 (illustrated in phantom lines in
FIG. 2) is inserted within the lock cylinder 60 and torque is
applied to the key 66 in a counterclockwise direction as viewed in
FIG. 3 of the drawings, the tongue 62 will be swung in a direction
urging the lock slide 52 downwardly away from the ratchet teeth 38
thereby enabling the slide body 40 to be shifted to the right as
desired. However, when the key 66 is turned to the position
enabling its withdrawal from the lock cylinder 60, the tongue 62 is
disposed in the position thereof illustrated in FIG. 3 whereby the
lock slide 52 is urged outwardly of the bore 50 by means of the
compression spring 54 into engagement with the teeth 38 to thereby
prevent movement of the slide body 40 to the right as viewed in
FIGS. 2 and 3. In operation, when it is desired to apply the cable
stop 20 to the throttle cable 10, the mid-portion of the housing 12
is removed and the housing 22 is applied to the cable 10 in the
manner illustrated in FIGS. 2 and 3 of the drawings. Then, with the
key inserted in the lock cylinder or sleeve and turned to the
position in which the latch slide 52 is withdrawn from the ratchet
teeth 38, the associated motorboat may be operated at the maximum
speed desired by shifting of the core 14 in the conventional
manner. Then, the key 66 may be turned so as to release the latch
slide 52 for movement into engagement with the ratchet teeth 38
thereby preventing further movement of the core 16 in a direction
opening the throttle of the associated motor, it being understood
that movement of the core 14 to the right as viewed in FIGS. 2 and
3 of the drawings increases the throttle setting of the associated
boat motor.
With the cable stop thus applied, the throttle setting of the
associated boat motor may not exceed the predetermined setting
applied to the cable stop 20. Of course, when the initial
adjustment of the cable stop 20 is effected, while the latch slide
52 is retracted from the ratchet teeth 38, the slide body 40 is
shifted to the left until the body 40 abuts the abutment member
defined by the double block clamp 36. However, even if the key 66
is not readily available and the slide block is disposed in its
limit position of movement to the right as viewed in FIGS. 2 and 3
of the drawings, the throttle stop 20 may be adjusted merely by
shifting the core 14 to the desired limit position and then moving
the slide body 40 to the left until it abuts the abutment member
36. As the slide body 40 is shifted to the left, the outer end of
the latch slide 52 will slide over the ratchet teeth 38.
As hereinbefore set forth, the cable stop of the instant invention
has been specifically designed for use in conjunction with motor
powered vehicle throttle cables. However, the cable stop may also
be utilized in conjunction with throttle cable rods supported for
substantial rectilinear movement and also other control members
wherein an adjustable limit stop for movement in one direction is
desired.
The foregoing is considered as illustrative only of the principles
of the invention. Further, since numerous modifications and changes
will readily occur to those skilled in the art, it is not desired
to limit the invention to the exact construction and operation
shown and described, and accordingly all suitable modifications and
equivalents may be resorted to, falling within the scope of the
invention as claimed.
* * * * *