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Publication numberUS3145685 A
Publication typeGrant
Publication dateAug 25, 1964
Filing dateOct 1, 1963
Priority dateOct 1, 1963
Publication numberUS 3145685 A, US 3145685A, US-A-3145685, US3145685 A, US3145685A
InventorsKulick Sr Edward L
Original AssigneeKulick Sr Edward L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Shock absorbing bumper for boats and docks
US 3145685 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Aug. 25, 1964 E. 1.. KULKCK, SR


$7. I ATYORUEY Flqune I 1954 E. L. KULICK, SR 3,145,685


United States Patent 3,145,685 SHOCK ABSORBING BUMPER FOR BOATS AND DOQKS Edward L. Kulick, Sr., 4516 SW. 28th Terrace, Fort Lauderdale, Fla. Filed Oct. 1, 1963, Ser. No. 313,029 4 Claims. (Q1. 114-220) This invention relates to shock absorbing bumpers for boats and docks.

The invention contemplates an elongated bumper for both dock piling and also for the marginal portion of a boat and with the bumpers being movable in an arcuate path and to be opposed in its movement by torque rods.

One form of the invention comprises an elongated vertically disposed bumper that is provided with a plurality of cushion rollers and with the bumpers being supported both upper and lower by torque rods that are anchored into a channel member that is fixed to the piling of a dock and whereby the bumpers may swing in a hori- Zontal are when engaged by a boat.

In another form of the invention, an elongated bumper having cushion rollers are supported outwardly from the edge of the boat or the edge of the rub rail and that constitutes a bumper for the sides of the boat and the bow portion thereof when the boat contacts a piling or other obstruction and with the second form embodying a rotatable tube in which is anchored a torsion rod and with the tube carrying laterally extending arms for supporting the bumper.

Novel features of construction and operation of the device will be more clearly apparent during the course of the following description, reference being had to the accompanying drawings wherein has been illustrated the preferred forms of the device and wherein like characters of reference are employed to denote like parts throughout the several figures.

In the drawings:

FIGURE 1 is a side elevation partly in section showing a bumper device mounted upon the piling of a dock,

FIGURE 2 is a plan view thereof,

FIGURE 3 is a fragmentary sectional view taken on line 3-3 of FIGURE 1,

FIGURE 4 is a plan view of a bumper device mounted upon the side and bow portion of a boat,

FIGURE 5 is a sectional view taken on line 55 of FIGURE 4, and

FIGURE 6 is a sectional view taken on line 6- -6 of FIGURE 5.

Referring specifically to the drawings and particularly to FIGURES 1-3, there has been illustrated a dock 5, supported by the piles 6. Fixed to the outer side of the pile 6, by bolts 7, is a channel member 8. The channel member is of elongated form to extend a predetermined distance into the water, indicated at 9. Fixed in opposite ends of the channel are bearing plates 10. The bearing plates 10 are preferably provided with nylon bushings 11, for the rotative reception of torque rods 12. The inner ends of the torque rods 12 are bent at a right angle and project thtrough apertures 13 of one side wall 14 of the channel member 8. A clamping plate 15, bolted to the bottom of the channel member 8 by screws or like fastening devices 16 whereby to engage upon the right angle ends of the torque bars 12 and whereby to maintain the torque bars in a fixed position at their inner ends. The torque bars project outwardly from the bearings 11 and are bent at a right angle, as shown at 17 and then upwardly and downwardly as indicated at 18 for engagement into the opposite ends of a tubular core 19, that constitutes the bearing for a plurality of cushion rollers 20 that are formed of rubber or any other suitable cushioning material. The rollers 20 are held against shifting movement with respect to the ends 18 of the torque rods by collars 21, fixed to the ends 18 by set screws 22. As shown in FIGURE 2, the upper portions 17 of the torque bars are angled outwardly and whereby to provide a suitable swinging movement of the bumper device toward and from the piling. The torque rods 12 are preferably formed of steel or like metal that is capable of twisting when a load is imparted thereto by the rollers 20 when a boat engages the device.

In the use of this form of the invention, the torque rods are bent to the shape indicated and the ends 12a inserted through the apertures 13 and then fixed into the channel by the clamping plate 15. The rods 12 have rotative movement in the bearings 11 and with the clamp 15 and the ends extending through the apertures 13, the torque rods are prevented from shifting up or down with respect to the channel 8. When a boat engages the group of rollers 20, the torque arms are swung inwardly, creating a torsional movement in the rods 12. When preessure is relieved from the rollers 20, the torsion set up in the rods 12 will return the rollers and the angled ends of the torque rods outwardly to the position illustrated in FIG- URE 2 thus, the torque rods constantly urge the rollers and associated mechanism outwardly and will absorb any shock or bumping action by the boat. The plurality of rollers 20 function to dispose the bumper at a sufiicient depth within the water and above the water whereby to function as a bumper in various degrees of tide conditions. The entire assembly as illustrated in FIGURE 1, being first assembled, is then fastened to the outer side of the piling 6 by the bolts or lag screws 17, providing a very novel bumper device that will absorb shock of a boat engaging therewith to a sufficient degree as will be determined by the torque capacity of the rods 12.

Referring now to FIGURES 4-6, there has been provided a mounting bumper for the sides of boats and the bow portion of the boat, such bumper comprising a tubular member 23 that is anchored to the deck 24 of the boat at one end by a bearing block 25. The block 25 is preferably provided with a nylon bearing bushing 26. At the opposite end of the tubular member 23 there is provided a fixed bracket 27 and a nylon bearing 28 is inserted into one end of the tube 23 and bears against the bracket 27. Extending through the tube member 23, is a torsion rod 29, the rod 29 at one end extends through the bushing 28 and through the bracket 27 and is welded or otherwise fixed to the bracket as indicated at 30. The rod 29 at its opposite end is bent at a right angle, as indicated at 31 and extends through an aperture 32 of the tube 23. Since the rod cannot rotate, due to its fixed end 30, rotation of the tube 23 will cause a torque action upon the rod 29 by the end 31 that is anchored to the tube.

Extending from the tube 23 are two or more arms 33. The arms 33 are of goose-neck shape as illustrated in FIGURE 5, for a purpose to be presently described. The arms 33 at their outer ends are provided with bear ings 34 that embrace a rod 35, that extends through the plurality of cushion rollers 36. The cushion rollers 36 may be formed of rubber or other cushion material and the rod 35 may extend through a tubular member, not shown, that passes through all of the rollers and the bearings 34. The outer ends of the rods 35 are bent laterally to prevent disengagement of the outermost rollers 36. It will be observed in FIGURE 4, a shorter bumper device of like construction is illustrated as a whole by the numeral 37 and this device is mounted upon the bow portion of the boat. structurally, the device 37 is substantially identical to that just described. While one bumper device has been illustrated, it will be apparent that a plurality of such bumper devices may be employed upon one or both sides of the boat. The goose-neck arm 33 permits a protective bumper action against piling or other fixed obstructions and permits the rollers and the arms to swing downwardly to a point adjacent the sides of the boat and such swinging action is determined by the torque capacity of the rod 29. This form of the invention provides a protective bumper device that is always biased outwardly by the torque rod 29 so that the boat may engage piling or other obstructions that are not equipped with bumper devices, such as that illustrated in the first form of the invention. While the bumper device 37 has been illustrated as a separate unit, it follows that the rod 35 may be arcuately curved to form a continuation of the bumper around the curve of the boat.

The bumper device of FIGURES 46, while being provided with bumper rollers 36, may obviously omit the rollers 36 and to provide a single relatively stiff rod of corresponding length that is connected to the arms 33 and that constitutes the bumper element. The rod could obviously extend around the curve of the boat to accommodate the bumper device 37.

It will therefore be apparent, that a very novel bumper means has been provided for boats that furnishes adequate protection against damaging the boat when docking against fixed piling. The torque rod 29 at all times biases the arms 33 away from the side of the boat and likewise the roller assembly 36 produces a very desirable protective means for the boat.

The bumper devices of this invention are novel in construction, are strong, durable, cheap to manufacture and avoids the use of any springs or other tensioning means for returning the bumpers to their normal outward position.

It is to be understood that the invention is not limited to the precise construction shown, but that changes are contemplated as readily fall within the spirit of the invention as shall be determined by the scope of the subjoined claims.

I claim:

1. A bumper device for yieldably opposing a boat that is moving in a path toward a piling of a dock, the bumper device being vertically arranged and parallel with the piling, the bumper device embodying a plurality of cushion rollers that are rotatable upon a tubular shaft, a channel member that is fixed to the outer side of a dock piling, torque rods disposed within the channel and with the torque rods extending from the upper and lower ends of the channel and journaled in bearings carried at the upper and lower ends of the channel, the outer ends of the torque rods being bent to an angle outwardly beyond the face of the channel and with the free ends of the rods being bent downwardly to engage into the opposite ends of the tubular shaft of the rollers, the opposite ends of the torque rods being bent at a right angle and clamped upon the base of the channel whereby the rods are caused to create a torque action when the rollers are engaged by a boat, the tubular shaft and the rollers being parallel to the channel member and with the rollers constituting an abutment that is elongated and extends above and below the surface of the water to form a bumper for all degrees of tide levels.

2. The structure according to claim 1 wherein the channel member is closed at its upper and lower ends and apertured to receive nylon bearings, the said torque rods extending through the bearings to facilitate a twisting action of the rods, the inner ends of the torque rods being bent at a right angle and engaging through apertures formed in a side wall of the channel member and a clamping plate engaging over both of the inner ends of the torque rods, the extended ends of the torque rods above and below the upper and lower ends of the channel being bent at an acute angle with respect to the axial center of the torque rods and whereby to dispose the group of rollers in a position outwardly beyond the face of the channel, the movement of the rollers inwardly when engaged by a boat being limited by the ability of the torque rods to twist.

3. A bumper device for mounting engagement upon the sides and bow portion of a boat, comprising a tubular shaft, the shaft being rotatably supported in parallel relation to the deck of the boat and journaled at its opposite ends in nylon bushings, the tubular shaft being provided with laterally extending arms having bearings at their outer ends for the reception of a shaft, a plurality of cushion rollers mounted upon the last named shaft and with the opposite ends of the shaft being bent laterally to prevent disengagement of the outermost rollers, a torque rod extending through the tubular shaft and with one end of the torque rod extending through a journal member and welded thereto against rotation, the opposite end of the torque rod being bent at a right angle and engaged within a notch formed in the outer end of the tubular shaft and whereby to prevent rotation of the torque rod with respect to the tubular shaft, the tubular shaft adapted to rotate in its bearings under the influence of a pressure exerted against the rollers and with the torque rod due to its connection with the tubular shaft being twisted in its length to impart a torque action in the rod and to oppose the rotation of the tubular shaft.

4. The structure according to claim 3 wherein the arms project from a tubular shaft in a direction outwardly beyond the marginal edge of the boat, the said arms being of goose-neck shape and whereby the bumper may be swung toward the side of the boat and with the goose-neck forming a clearance between the arms and the edge of the boat, the bumper device being swung in an arc toward the side of the boat when contacted by an immovable object or possibly another boat and limited in its swinging movement by the ability of the torque rod to twist.

References Cited in the file of this patent UNITED STATES PATENTS 659,078 Lieb Oct. 2, 1900 2,417,849 Walters et a1. Mar. 25, 1947 2,438,432 Edwards Mar. 23, 1948 2,677,936 Hewitt May 11, 1954 FOREIGN PATENTS 879,255 Great Britain Oct. 11, 1961

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US2438432 *Oct 5, 1945Mar 23, 1948Edwards Samuel HTorsion spring mounting
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Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3210110 *Feb 8, 1962Oct 5, 1965Fruehauf CorpTorsional bumper
US3406523 *Jul 11, 1966Oct 22, 1968Cambridge Fender & EngineeringBuffers or energy absorbers
US3602109 *Aug 4, 1969Aug 31, 1971Daniel C HarringtonHighway safety guard-roll barrier
US3852968 *Nov 19, 1973Dec 10, 1974Holley MTorsion-mode breasting dolphin
US3853344 *Nov 16, 1972Dec 10, 1974Nissan MotorImpact absorbing bumper system
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US7730844 *Mar 20, 2006Jun 8, 2010Ihab AyoubBumper system
US8920084 *Nov 8, 2012Dec 30, 2014Looprope, LlcLinkable rope assembly
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U.S. Classification114/220, 405/213, 293/131
International ClassificationB63B59/00, E02B3/26, B63B59/02, E02B3/20
Cooperative ClassificationE02B3/26, B63B59/02
European ClassificationE02B3/26, B63B59/02