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Патент USA US3449924

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June 17, 1969
D. L.. RosKoPF
3,449,917
PORTABLE BOAT DOCK FENDERS
Filed July 28, 1967
Sheet
l
of 2
50
INVEIVIUR
DONALD L. ROSKOPF
ATTORNEY
June 17, 1969
n.1.. RosKoPF
3,449,917
PORTABLE BOAT DOCK FENDERS
Filed July ze, 1967
`
sheet
f3
of 2
‘y
ÍNVEJ‘VTOR.
DONALD l.. ROSKOPF
ATTORNEY
United States Patent 0 F'ICC
3,449,917
Patented June 17, 1969
l
2
FIG. 2 is lan enlarged fragmentary sectional view taken
3,449,917
PORTABLE BOAT DOCK FENDERS
Donald L. Roskopf, 25140 Dallas Drive,
Grosse Ile, Mich. 48138
Filed July 28, 1967, Ser. No. 656,836
Int. ‘CL E02b 3/22; B63b 21 /00
U.S. Cl. 61-48
5 Claims
ABSTRACT 0F THE DISCLOSURE
Portable boat dock fenders of the type employable
when tying-up or mooring a pleasure craft such as a sail
boat, motor boat or cruiser to a dock, wharf or pier
having a plurality of generally vertically disposed facing
piles or bumper timbers spaced therealong, a typical
portable boat dock fender of the invention consisting of
a rigid vertically disposed back member onto the face
of which is secured a resilient vertical continuous bumper
element by such means as preferably vertically spaced
transversely disposed pairs of through bolts therealong,
upper and lower quickly securable and removable means
for removably securing said portable boat dock fender
on the line 2-2 of FIG. 1.
FIG. 3 is an enlarged fragmentary elevational view of
the upper portion of the portable boat dock fender dis
closed in FIG. l, the lower portion being similar.
FIG. 4 is an enlarged fragmentary sectional view taken
on the line 4_4 of FIG. 1 showing the portable boat dock
fender mounted on a pile by its upper thong type quickly
securable and releasable securing means together with a
pair of pile engaging pins.
FIG. 5 is an enlarged side view as taken on line 5_5
of FIGURE 4.
FIG. 6` is an enlarged fragmentary sectional view sim
ilar to FIG. 2 showing an alternate single cavity resilient
bumper element which is preferably sealed closed at both
ends to serve as an air cushioned portable boat dock
fender of the invention.
Referring now to the drawings wherein like reference
characters refer to like and corresponding parts through
out the several views7 the particular portable boat dock
fender 10 disclosed in FIGS. 1-5 inclusive to illustrate
the invention preferably comprises a vertical back mem~
to a dock pile or the like at a selected level to receive
‘ber 11 of a hard wood plank onto the outer face of
the bumping of the rub-rail of a boat thereagainst 'when
which is secured a longitudinally disposed preferably rub
the craft is tied up to a boat dock, the said portable boat 25 ber bumper element 12 by transversely disposed longi
dock fender including laterally spaced means at the
tudinally spaced pairs of bolts 14 and 140 employing
upper and lower portions thereof positively engaging the
suitable round washers 15 and elongated Washers 150
pile or «bumper timber of said wharf or pier whereby to
where and as required.
prevent dislocation of said portable boat dock fender
The upper two and lower two pairs of bolts 14 and
with respect to said pile or bumper timber when remova 30 140 are spaced relatively close together and extend
'bly secured thereto and when in use.
through a suitable rectangular clamp plate 16 which
clamps or anchors the flat belt or thong 21 of a trans
Small craft such as sail boats, motor boats and cruisers
versely disposed securing means 20 to the upper and
lower portions of the back member 11. Each said secur
are continually subject to being damaged by wave action 35 ing means 20 consists of a ñat belt or thong 21 of Sulli
or swells when tied up or moored at a boat dock. This
cient length to extend around a pile 40 or the like of a
is particularly the case when the craft is moored away
from its “home” dock and where adequate provisions are
boat dock 50‘ and allow the long free end 210 thereof
to extend through a quick release clamp 22 ñxed to the
short end 211 0f said ñat belt or thong 21. The ñat belt
not available for temporarily docking such craft with
40 or thong 21 may be of woven canvas or nylon cord or
out damage thereto.
other suitable material of adequate strength for its pur
With the foregoing in view, the primary object of the
instant invention is to provide an improved portable
pose and resistant to deterioration from moisture. The
quick release clamp 22 may be of any conventional
boat dock fender that may be stowed away and carried
buckle or anchor type; for example, such as employed in
by small craft and which may be easily and readily re
movably fixed to and removed from piles or other vertical 45 modern automotive seat belts or the like. Since the
quick release clamp 22 may be of any conventional type
timbers of boat docks for small craft, the said boat dock
fenders being applicable vertically along the face of
usable with the particular fiat belt or thong 21, it need
dock piling to at least one but preferably two adjacent
not ‘be described in detail herein. Obviously, any suitable
securing means such as rope or chain of adequate strength
dock piles of the dock at a selected elevation above water
level to assure that the side rail or rub-rail of the small
and convenience in use may be substituted for the secur
craft will bump thereagainst during dockage thereof.
ing means 20, and may be connected in any suitable man
A further object of the invention is to provide portable
ner to the back member 11 so as to extend laterally
preferably from the rear thereof.
boat dock fenders for securment to vertically disposed
To avoid dislocation of the portable boat dock fender
piles or tim-bers of pleasure boat docks, each boat dock
fender consisting of a suitable substantially rigid vertical 55 when in use, means are employed such as laterally spaced
sharpened upper and lower pairs of pointed pin type pile
back member, a resilient 'bumper element secured to` the
engaging elements 1400 preferably consisting of suitably
face of said back member, means preferably fixed to the
pointed ends of selected pairs of upper and lower bolts
upper and lower portions of said back member for en
140 which `also secure the rubber bumper element 12
gagement around a dock pile for readily removably se
curing and releasing said boat dock fender to and from 60 and clamp plate 16 to the vertical back member 11. The
said bolts 140 are the same as the bolts 14 except that
the outer face of a pile, and laterally spaced preferably
they are longer and are formed at their free ends into
pointed pin means extending from the rear of said back
relatively sharply pointed pin elements 1400` capable of
member embeddable in said pile when said boat dock
engaging and biting into a pile 40 of a boat dock 50 t0
fender is mounted thereon and secured thereto prevent
65 prevent dislocation of the portable boat dock fender 10
ing dislocation of said boat dock fender when in use.
once it is removably secured to the outer face of the pile
Other objects of the invention will become apparent by
40 Iby the securing means 20. As indicated in FIGS. 3
reference to the following detailed description taken in
and 5, it is preferable that the second from the top and
connection with the accompanying drawings, in which:
second from the bottom pairs of bolts 140 are formed to
FIG. 1 is a front elevational View of a portable boat
dock fender embodying the invention removably secured 70 function as pile engaging elements 1400 as well as secur
ing the vertical rubber bumper element 4and `a portion of
to the outer face of a pile of a boat dock for pleasure
the clamp plate 16 to the vertical back member 11. Al
craft.
3,449,917
3
ternatively, any other of the upper pairs and any other of
the lower pairs of bolts 14 of the portable boat dock fen
der may be bolts 140` having pile engaging elements 1400
if desired.
y
Obviously, laterally spaced means other than the later
ally spaced pile engaging elements 1400 may be employed
on the upper and lower rear portion of the vertical back
member 11 of the portable boat dock fender to engage
the outer face of the pile 50 to prevent its dislocation on
the pile when removably secured thereto and when in use.
4
the size, shape, arrangement and detail of the several
elements thereof without departing from the spirit and
scope of the invention as defined by the appended claims.
I claim:
1. A portable boat dock fender for removably mount
ing on the face of a vertically disposed longitudinally
spaced pile or timber of pleasure boat docks comprising
a substantially rigid vertical back member,
a resilient bumper element secured along the face of
said back member,
lIn mounting a portable boat dock fender 10 onto a
flexible means ñxed to the upper and lower portions of
pile 40, the said fender 10 is preferably first positioned
said back member readily positioned around said
pile removably securing said portable boat dock
at the desired elevation above water level WL on the
face of the pile 40, and it is there pressed or pounded by
one’s hand against the said pile 40 to positively engage
the said pile with the pointed pin type pile engaging ele
ments 1400, and then the securing means 20 is positioned
around the pile 40 and the belt or thong 21 thereof
cinched-up and secured by the quick release clamp 22.
fender at any selected elevation on said pile,
upper and lower pairs of laterally spaced pile engag
ing means extending rearwardly of said vertical back
member formed to engage a pile when said portable
boat dock fender is positioned against the outer face
of said pile and removably secured thereto.
2. A portable boat dock fender as claimed in claim 1
The portable boat dock fender 10 will then remain in its 20
wherein said upper and lower pairs of laterally spaced pile
mounted position on the pile or the like ready to receive
engaging means consist of pointed pins.
bumping of a boat nib-rail thereagainst while the boat
3. A portable boat dock fender as claimed in claim 1
is tied-up to the dock in the usual conventional manner.
wherein said means readily removably securing the same
Obviously, it is preferable to use one portable boat dock
fender on each of two piles of a boat dock to which a 25 to said pile consists of a thong ñxed to said back member
boat or other pleasure craft is tied-up or docked.
The rubber bumper element 12 of the embodiment of
the invention shown in FIGS. l-S inclusive preferably
and includes a quick tightening and release clamp means.
4. A portable boat dock fender as claimed in claim 1
wherein the resilient bumper element includes a pair of
longitudinally laterally spaced resilient ribs.
may be of a conventional double hollow pyramidal ex
5. A portable boat dock fender as claimed in claim 1
truded rubber type or the like providing a pair of vertical 30
bumper ribs 120 and securing ñanges 121. However, other
suitable and adequate Ábumper elements 12 may be
employed.
wherein the resilient bumper element includes a single
hollow tubular member hermetically sealed at the upper
and lower ends thereof.
FIG. 6 discloses a modiñed portable boat dock fender
100 embodying the invention wherein an air cushioned 35
rubber bumper element 24 having a single longitudinal
hollow rib 240 of substantial size and securing flanges 121
is employed. The said hollow rib 240 is hermetically
sealed at both ends by such means as a relatively thick
rubber end plug 241 vulcanized or otherwise secured 40
therein. This construction provides an air cushioned
bumper having a greater cushioning effect than the bumper
References Cited
UNITED STATES PATENTS
2,892,315
3,121,997
2,952,979
6/1959
2/ 1964
9/ 1960
Blancato ____________ __ 61-48
Sampson ____________ __ 61-48
Rolando ____________ __ 61--48
1,378,858
945,45 6
FOREIGN PATENTS
7/1964- France.
1/ 1964 Great Britain.
element 12. Otherwise the embodiment of the invention
disclosed in FIG. 6 is like and similar to the embodiment
45
of the invention disclosed in FIGS. 1-5 inclusive.
JACOB SHAPIRO, Primary Examiner.
Although but one embodiment of the invention and one
modiiication thereof has been disclosed and described
U.S. C1. X.R.
herein, it is obvious that many changes may vbe made in
114--219
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