U.S. patent number 3,874,318 [Application Number 05/451,583] was granted by the patent office on 1975-04-01 for mounting assembly for small outboard motors.
This patent grant is currently assigned to Outboard Marine Corporation. Invention is credited to John A. Langley.
United States Patent |
3,874,318 |
Langley |
April 1, 1975 |
**Please see images for:
( Certificate of Correction ) ** |
MOUNTING ASSEMBLY FOR SMALL OUTBOARD MOTORS
Abstract
Disclosed herein is an outboard motor including a propulsion
unit having an upper unit, a lower unit carrying a propeller, and
an elongated, tubular member connecting the upper and lower units.
The propulsion unit is pivotally supported by a support assembly
from a mounting bracket mounted on a boat hull for movement between
an operating position where the tubular member is generally upright
outboard of the boat and the lower unit is submerged in the water
and a storage position where the tubular member is generally
horizontal and the lower unit is located inboard of the boat. The
support assembly includes a support member fixedly connected to the
tubular member at a location intermediate the upper and lower
units, a first sleeve slidably mounted on the tubular member below
the support member, a second sleeve slidably mounted on the tubular
member above the support member, and a pair of links respectively
pivotally connected to the first and second sleeves and pivotally
connected at spaced locations to the mounting bracket.
Inventors: |
Langley; John A. (Zion,
IL) |
Assignee: |
Outboard Marine Corporation
(Waukegan, IL)
|
Family
ID: |
23792813 |
Appl.
No.: |
05/451,583 |
Filed: |
March 15, 1974 |
Current U.S.
Class: |
440/55; 248/642;
D15/5; 440/63 |
Current CPC
Class: |
B63H
20/007 (20130101); F02B 61/045 (20130101) |
Current International
Class: |
B63H
20/00 (20060101); F02B 61/04 (20060101); F02B
61/00 (20060101); B63h 021/26 () |
Field of
Search: |
;248/4
;115/17,18,24,41 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Blix; Trygve M.
Assistant Examiner: Basinger; Sherman D.
Attorney, Agent or Firm: Michael, Best & Friedrich
Claims
I claim:
1. An outboard motor comprising a propulsion unit including an
upper unit, a lower unit carrying a propeller, and means connecting
said upper and lower units including an elongated member, a support
member fixedly connected to said elongated member at a location
intermediate said upper and lower units, a bracket adapted to be
mounted on a boat hull, first sleeve means slidably mounted on said
elongated member between said support member and said lower unit
for relative movement between said elongated member and said first
sleeve means, said first sleeve means engaging said support member
when said propulsion unit is in an operating position, second
sleeve means mounted on said elongated member between said support
member and said upper unit for relative movement between said
elongated member and said second sleeve means, and first and second
link means respectively pivotally connected to said first and
second sleeve means and pivotally connected to said bracket for
pivotal movement of said link means relative to said bracket to
afford movement of said propulsion unit between an operating
position and a storage position.
2. An outboard motor according to claim 1 including latch means for
releasably and selectively holding said first link means in
positions corresponding to the operating and storage positions.
3. An outboard motor according to claim 2 wherein said latch means
comprises a pin on said first link means, a latch means on said
mounting bracket and including a pair of spaced latching elements
having a hook portion, said latching elements being located such
that said pin is latchably engaged by the hook portion of one of
said latching elements when said first link means is in the
operating position and said pin is latchably engaged by the hook
portion of the other of said latching elements when said first link
means is in the storage position.
4. An outboard motor according to claim 3 wherein said latch member
is movably mounted relative to said bracket and said latch means
further includes means biasing said latch member in the direction
to retain engagement of said latch elements with said pin and means
connected to said latch member for releasing said latch member
against the action of said biasing means.
5. An outboard motor according to claim 1 including means for
limiting the pivotal movement of said first link means relative to
said bracket in the direction towards the operating position to
thereby establish the angular position of said elongated member
relative to the vertical when said propulsion unit is in the
operating position.
6. An outboard motor according to claim 5 wherein said limiting
means comprises a stop member mounted for vertical movement
relative to said bracket and located to act as a seat for said
first link means when said first link means is in the operating
position, and means for adjusting the vertical position of said
stop member relative to said bracket.
7. An outboard motor according to claim 1 including means for
limiting the pivotal movement of said first link means relative to
said mounting bracket in the direction toward the storage position
to thereby assist in locating said elongated member in the
horizontal position when said propulsion unit is in the storage
position.
8. An outboard motor according to claim 1 including stop means on
said elongated member for limiting axial movement of said first and
second sleeve means toward said lower unit and said upper unit,
respectively.
9. An outboard motor according to claim 1 including means for
selectively adjusting the axial position of said support member on
said elongated member and thereby varying the depth at which said
lower unit is submerged in the water when said propulsion unit is
in the operating position.
10. An outboard motor according to claim 9 wherein said support
member is a clamp slidably mounted on said tubular member and said
adjustment means comprises means for selectively tightening said
clamp into gripping engagement with said elongated member.
11. An outboard motor comprising a propulsion unit including an
upper unit, a lower unit carrying a propeller, and means connecting
said upper and lower units including an elongated member, a support
member fixedly connected to said elongated member at a location
intermediate said upper and lower units, a bracket adapted to be
mounted on a boat hull, first sleeve means slidably mounted on said
elongated member between said support member and said lower unit
for relative movement between said elongated member and said first
sleeve means, said first sleeve means engaging said support member
when said propulsion unit is in an operating position, second
sleeve means mounted on said elongated member between said support
member and said upper unit for relative movement between said
elongated member and said first sleeve means, first and second link
means respectively pivotally connected to said first and second
sleeve means and pivotally connected to said bracket for pivotal
movement of said link means relative to said bracket to afford
movement of said propulsion unit between the operating position and
a storage position, latch means for releasably and selectively
holding said first link means in positions corresponding to the
operating and storage positions, means for limiting the pivotal
movement of said first link means relative to said bracket in the
direction toward the operating position to thereby establish the
angular position of said elongated member relative to the vertical
when said propulsion unit is in the operating position, and means
for limiting pivotal movement of said first link means relative to
said bracket in the direction toward the storage position to
thereby assist in locating said elongated member in a horizontal
position when said propulsion unit is in the storage position.
12. An outboard motor according to claim 11 wherein said latch
means comprises a pin on said first link means, a latch member
mounted for movement relative to said bracket and including a pair
of spaced latching elements, said latching elements each having a
hook portion being located such that said pin is latchably engaged
by the hook portion of one of said latching elements when said
first link means is in the operating position and said pin is
latchably engaged by the hook portion of the other of said latching
elements when said first link means is in the storage position,
means biasing said latch member in the direction to return
engagement of said latch elements with said pin, and means for
releasing said latch member against the action of said biasing
means.
13. An outboard motor according to claim 12 including a stop member
mounted for vertical movement relative to said bracket and located
to act as a seat for said first link means when said first link
means is in the operating position, and means for adjusting the
vertical position of said stop member relative to said bracket.
Description
BACKGROUND OF THE INVENTION
This invention relates to outboard motors for boats and, more
particularly, to mounting arrangements for small outboard
motors.
Low-powered, electrically-operated outboard motors are used for
fishing, particularly when a low speed, silent operation of the
boat is desired. These small motors are mounted on the boat in a
manner so they can be withdrawn from the water and retained inside
the boat in a retracted position when the boat is to be propelled
at normal speed by a higher horsepower motor or to be transported.
When in the retracted position, the entire motor, including the
propeller, preferably should be located inboard of the boat. In
order to minimize the effort required for moving the motor between
the operating and storage positions, the motor mount desirably
should be arranged so that the motor is swung through as small an
arc as possible.
Examples of prior art outboard mounting arrangements are disclosed
in the following U.S. patents:
Inventor Patent No. Issue Date
______________________________________ Hienke 1,120,485 December 8,
1914 Shontz 2,901,194 October 25, 1959 Taylor 2,960,057 November
15, 1960 Scivally 3,052,204 September 4, 1962 Evans 3,119,365
January 28, 1964 Ibbs 3,245,640 April 12, 1966 Wilkerson 3,604,674
September 14, 1971 Jackson 3,629,885 December 28, 1971 Bartosch
3,645,483 February 29, 1972 Horton 3,674,228 July 4, 1972 Harris et
al 3,724,790 April 3, 1973 Henning 3,765,369 October 16, 1973
______________________________________
SUMMARY OF THE INVENTION
The invention provides an outboard motor including a propulsion
unit having an upper unit, a lower unit carrying a propeller, means
connecting the upper and lower units including an elongated member,
a bracket adapted to be mounted on a boat hull, and means mounted
on the elongated member and pivotally connected to the bracket for
supporting the propulsion unit from the boat and for affording
movement of the propulsion unit between an operating position where
the elongated member is generally upright outboard of the boat and
the lower unit is submerged in the water and a storage position
where the elongated member is generally horizontal and the lower
unit is located inboard of the boat.
More specifically, there is provided a support member which is
fixedly connected to the elongated member at a location
intermediate the upper and lower units, a first sleeve means which
is slidably mounted on the tubular member between the support
member and lower unit and is engaged by the support member to
support the propulsion unit in the operating position and a second
sleeve means which is slidably mounted on the tubular member
between the support member and the upper unit. Arcuate movement of
the propulsion unit is provided by first and second link means
which are respectively pivotally connected to the sleeve means and
are pivotally connected to the bracket for pivotal movement
relative to the bracket between the operating and storage
positions.
In a preferred embodiment, a latch means is provided for releasably
and selectively holding the first link means in the operating and
storage positions. Also, means can be provided for limiting the
pivotal movement of the first link means relative to the bracket in
the direction toward the storage position so as to establish the
angular position of the elongated member to the vertical, and thus
the propeller trim, when the propulsion unit is in the operating
position. In further accordance with the invention, the limiting
means comprises a stop member which is vertically adjustable
relative to the bracket so that the propeller trim can be
adjusted.
One of the principal features of the invention is the provision of
an improved mounting arrangement for an outboard motor whereby the
outboard motor can be moved between an operating position and a
storage position with a minimum of effort.
Another of the principal features of the invention is the provision
of such a mounting arrangement including a latching mechanism which
is operable to selectively and releasably retain the outboard motor
in either the operating or storage position.
Another of the principal features of the invention is the provision
of such a mounting arrangement including means for conveniently
adjusting the propeller trim.
Another of the principal features of the invention is the provision
of such a mounting arrangement whereby the propeller section of the
outboard motor is automatically retracted to a location inboard of
the boat during movement of the outboard motor from an operating to
a storage position.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevation view of an outboard motor which embodies
various of the features of the invention and which is shown in the
storage position.
FIG. 2 is a fragmentary view of the outboard motor of FIG. 1 shown
in the operating position.
FIG. 3 is a fragmentary, top view of the outboard motor shown in
FIG. 1 taken along the line designated 3--3 in FIG. 1.
FIG. 4 is an end view of the outboard motor shown in FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Before explaining the invention in detail, it is to be understood
that the invention is not limited in its application to the details
of construction and the arrangements of the components set forth in
the following description or illustrated in the drawing. The
invention is capable of other embodiments and of being practiced
and carried out in various ways. Also, it is to be understood that
the phraseology and terminology employed herein is for the purposes
of description and should not be regarded as limiting.
Illustrated in the drawings is an outboard motor 10 having a
propulsion unit 12 including a lower unit 14 which has an
immersible housing 15 encasing an electric motor (not shown) for
driving a propeller 16 rotatably mounted in the housing 15. The
lower unit 14 is secured to the lower end of an elongated, tubular
member 18 which carries suitable wiring for connecting a boat
battery (not shown) to the lower unit motor. Located on the upper
end of the tubular member 18 is an upper unit 20 which can include
the actuating portion of a steering mechanism (not shown) by which
the tubular member 18 can be selectively rotated for steering the
lower unit 14. In the illustrated construction, the tubular member
18 comprises the so-called motor tube of the propulsion unit. The
tubular member 18 can be a tubular housing which surrounds and
extends parallel with the motor tube. Fixedly mounted on a boat
hull 22 is a mounting bracket 24.
In accordance with the invention, the propulsion unit 12 is
supported from the mounting bracket 24 by a support assembly 26
which provides pivotal movement of the propulsion unit 12 relative
to the mounting bracket 24 between an operating position where the
tubular member 18 is generally upright outboard of the boat and the
lower unit 14 is submerged in the water (FIG. 2) and a storage
position where the tubular member 18 is generally horizontal and
the lower unit 14 is located inboard of the boat (FIG. 1).
More specifically, the support assembly 26 includes a support
member 28 fixedly connected to the tubular member 18 at a point
intermediate the lower unit 14 and the upper unit 20, a first or
lower sleeve 30 slidably mounted on the tubular member 18 below the
support member 28, and a second or upper sleeve 32 slidably mounted
on the tubular member 18 above the support member 28.
When the propulsion unit 12 is in the operating position (FIG. 2),
the support member 28 seats against the lower sleeve 30 and thereby
limits the depth at which the lower unit 14 is submerged in the
water. The support member 28 preferably is mounted on the tubular
member 18 for selective and axial movement relative to the tubular
member 18 so that the submersion depth of the lower unit 14 can be
adjusted. In the specific construction illustrated, the support
member 28 is in the form of a split sleeve clamp including leg
portions 33 which encircle the tubular member 18 and can be
tightened into gripping engagement with the tubular member 18 by
tightening a bolt 34 threadably connecting the leg portions 33.
Located on the lower end of the tubular member 18 near the lower
unit 14 for limiting relative axial movement between the tubular
member 18 and the lower sleeve 30 is a first pair of diametrically
opposed stops or lugs 35 (one shown). Located on the upper end of
the tubular member 18 near the upper unit 20 for limiting relative
axial movement between the tubular member 18 and the upper sleeve
32 is a second pair of diametrically opposed stops or lugs 36 (one
shown).
The lower sleeve 30 is pivotally mounted to a first or outboard
link unit 37 which, in turn, is connected to the mounting bracket
24 for pivotal movement relative to the mounting bracket 24 between
an extended or operating position (FIG. 2), and a retracted or
storage position (FIG. 1). The upper sleeve 32 is pivotally
connected to a second or inboard link unit 38 which, in turn, is
pivotally connected to the mounting bracket 24 for pivotal movement
relative to the mounting bracket 24 between the operating and
storage positions.
More specifically, the mounting bracket 24 includes a base member
39, a first pair of laterally spaced, upstanding ears 40 which are
located near the outboard end of the base member 39 and a second
pair of laterally spaced, upstanding ears 42 (one shown) which are
located near the inboard end of the base member 39.
The outboard link unit 37 includes a pair of laterally spaced
parallel, arcuate links 44 which at one end are pivotally connected
to the lower sleeve 30, such as by diametrically opposed pins 46,
and at the other end are pivotally connected to the mounting
bracket 24 by a pin 48 extending transversely between the ears 40.
The inboard link unit 38 includes a pair of laterally spaced,
parallel, elongated arms 50 (one shown) which at one end are
pivotally connected to the upper sleeve 32, such as by
diametrically opposed pins 52 (one shown) and at the other end are
pivotally connected to the mounting bracket 24 by a pin 53
extending transversely between the ears 42.
Connected to the support member 28 for effecting movement of the
propulsion unit 12 between the operation and storage positions is a
pull rope 54. During movement of the link units 37 and 38 between
the operating and storage positions, the lower sleeve 30 travels
through a generally arcuate path defined by the pivot radius of the
links 44 and the upper sleeve 32 travels through a generally
arcuate path defined by the pivot radius of the arms 50.
Provided on each of the mounting bracket ears 40 for limiting the
arcuate travel of the link unit 37 in the counterclockwise
direction as viewed in FIGS. 1 and 2, is an arcuate bearing surface
55 which is engaged by a respective link 44 to serve as a stop
therefor. The bearing surfaces 55 are arranged to assist in
locating the tubular member 18 in a substantially horizontal
position when the link units 37 and 38 are in the storage
position.
When the outboard link 37 is in the operating position, the links
44 bear against a stop member 56 which is provided on the outboard
end of the mounting bracket 24 and which limits arcuate movement of
the outboard link unit 37 in the clockwise direction as viewed in
FIGS. 1 and 2. In accordance with a preferred embodiment of the
invention, means are provided for selectively adjusting the
vertical position of the stop member 56 relative to the mounting
bracket 24 so as to facilitate adjustment of the angular position
of the tubular member 18 relative to the vertical, and thus the
trim of the propeller 16, when the propulsion unit 12 is in the
operating position. While various arrangements can be used, in the
specific construction illustrated, the opposite ends of the stop
member 56 are slidably mounted in respective guide slots 58
provided in a pair of laterally spaced flanges 60 extending
upwardly from the mounting bracket base member 39. The stop member
56 is supported on the base member 39 by a threaded member or stud
62 which is threaded through the stop member 56 and bears against
the base member 39. The vertical position of the stop member 56 can
be adjusted by rotating the stud 62 either clockwise or
counterclockwise.
Means are provided for releasably and selectively latching the
outboard link unit 37 in the operating and storage positions. While
various arrangements can be used, in the specific construction
illustrated, such means includes a latch member 64 which is
slidably mounted in a guideway 66 provided in the mounting bracket
base member 39 and includes a pair of spaced, upstanding latch
elements 68 and 70 having respective hook portions 72 and 74. The
hook portions 72 and 74 are engageable with a pin 76 extending
transversely between the links 44 to releasably hold the outboard
link unit 37 in the operating position and in the storage position,
respectively. The hook portions 72 and 74 can be provided with
respective camming edges 78 and 80 to facilitate initial movement
of the pin 74 into latching engagement.
Means are provided for biasing the latch elements 68 and 70 in the
direction to effect engagement of the respective hook portions 72
and 74 with the pin 76. While other arrangements can be used, in
the specific construction illustrated, such means comprises a
compression spring 82 located between the inboard end of the latch
member 64 and the base member 39 to urge the latch member 64 to the
right as viewed in FIGS. 1-3. Suitable means, such as a pull rope
84 attached to the latch element 70, is provided for moving the
latch member 64 against the action of the spring 82 (i.e. move the
latch member 64 to the left as viewed in FIGS. 1 and 2) to release
the latch elements 68 and 70 from the pin 76.
Accordingly, when the propulsion unit 12 is in the operating
position, the hook portion 72 of the latch element 68 is in
engagement with the pin 76. To move the propulsion unit 12 from the
operating position to the storage position, the pull rope 84 is
first pulled rearwardly to release the latch element 68 from the
pin 76 and the pull rope 54 then is pulled upwardly to swing the
propulsion unit 12 towards the storage position. After the upper
sleeve 32 has been swung past the apogee of its arcuate path, the
pull rope 54 can be used to control downward movement of the
propulsion unit 12 to the storage position and to ease passage of
the pin 76 into the hook portion 74 of the latch element 70.
Since the sleeves 30 and 32 are slidably mounted on tubular member
18, the upper sleeve 32 is free to slide axially on the tubular
member 18 (while the support member 38 remains in engagement with
the lower sleeve 30 due to the weight of the propulsion unit 12)
during initial movement of the propulsion unit 12 towards the
storage position. During continued movement of the propulsion unit
12 towards the storage position, the upper sleeve 32 eventually
engages the lugs 36 and the tubular member 18 thereafter is moved
axially with respect to the lower sleeve 30, by the pulling action
applied thereto by the upper sleeve 32, until the lugs 35 are
engaged by the lower sleeve 30. Thus, by the time the propulsion
unit 12 reaches the storage position (FIG. 1), the lower unit 14
has been automatically retracted to a position inboard of the
boat.
Referring to FIGS. 1 and 2, it can be seen that the links 44, the
bearing surfaces 55 and the arms 50 are arranged so that, while
being moved between the operating and storage positions, the arms
50 travel through an arc (e.g. 155.degree.) larger than the travel
arc (e.g. 120.degree.) for the links 44. With this arrangement, the
tubular member 18 assumes a generally horizontal position when the
propulsion unit 12 is in the storage position. Also, since the
radius of the arcuate path through which the lower end of the
propulsion unit 12 travels is relatively short, the effort required
to move the propulsion unit 12 between the operating and storage
position is considerably less than that required with many prior
art mounting arrangements.
During return movement of the propulsion unit 12 from the storage
position toward the operating position, the combined effect of the
weight of the propulsion unit and the relative axial movement
between the tubular member 18 and the sleeves 30 and 32 causes the
propulsion unit 12 to be returned to the operating position where
the support member 28 engages the lower sleeve 30.
Various of the features of the invention are set forth in the
following claims.
* * * * *