US3220026A - Hull protector for small craft - Google Patents

Hull protector for small craft Download PDF

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Publication number
US3220026A
US3220026A US361830A US36183064A US3220026A US 3220026 A US3220026 A US 3220026A US 361830 A US361830 A US 361830A US 36183064 A US36183064 A US 36183064A US 3220026 A US3220026 A US 3220026A
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protector
bow
craft
boat
keel
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US361830A
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Albert W Lichti
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
    • B63B43/18—Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collision or grounding; reducing collision damage

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  • the invention relates particularly to protectors for the bottom of the bow of the hull of a boat or small craft and the device is of a construction to lit and be aiixed over the portion of the hull to be protected in a manner to accomplish the purpose desired without interfering with the operation of the boat and particularly without offering resistance to its movement in the water.
  • FIG. 1 is a bottom perspective illustrating the use of the invention
  • FIG. 2 a section on the line 2-2 of FIG. l;
  • FIG. 3 a front elevation
  • FIG. 4 a section on the line 4 4 of FIG. l;
  • FIG. 5 a bottom plan view illustrating the application of the invention to the bow of the boat.
  • FIG. 6, a perspective viewed from above.
  • the invention is a sheet or pad of flexible resilient material generally pear-shaped or of the general shape and character of the under side of the bow portion of the hull portion ofv a boat and subjected to the most wear. It is adapted to underlie the heel and to be cemented or otherwise attached to the forward underside of a boat and of a plastic material suiciently tough to provide the desired protection, being ,composed of a sheet or pad tapering in every direction in thickness from a central area to .a thin feathered edge in order that it will offer little resistance to and not interfere with the operation of the boat.
  • a boat or small craft with which the present invention is concerned includes a bottom 10, a keel 11, sides 12, a stern 13, and a bow 14 constituting the hull lof the craft.
  • a hook 15 is located in the lower portion of the bow by which the craft may be pulled, towed, or secured to suitable moorings.
  • Small boats of this type scrape the earth or ground when launched and when landed or beached. Additional- 1y they engage various objects in the water and these scrapings or contact with objects produce wear, particularly to the hull, especially to the forward portion thereyof including the keel, and the present invention has been ICC created to serve as a protector for such portions subjected to undue wear.
  • the protector of the present invention may be a shield forming pad generally pear-shaped or triangular with a pointed forward end, diverging sides, and a blunt rear end, and may be composed of a sufficiently tough plastic, transparent or opaque, clear or colored, or of similar substance to provide protection against impact and abrasion of the forward bottom portion of the boat, and may be readily attached by a suitable adhesive to provide an inconspicuous shield allowing for inspection or -observation of the surface over which it is applied. Its length is approximately one-third of the hull to which it is to be applied.
  • the invention consists of a flexible resilient sheet or pad having a relatively narrow forward portion 16 with an opening 17 through which the hook 15 of the boat is adapted to be .received when the protector is applied.
  • edges 18, 19, 20, 21, and 22 of the device are relatively thin and divergingly uniformly taper from a thicker central rib or keel covering line 23 of maximum thickness adjacent the forward end thereof.
  • the device is wide enough to cover the desired area and due to its. being feathered to a thin edge, it will not provide any appreciable drag on the craft at any time but will serve as a protection during launching and beaching, as well as when loading the craft on a common carrier.
  • the present invention is a readily applied inexpensive attachment and not only will provide protection for the forward under surface of the hull without otherwise interfering with the ease of movement of the boat in the water, but will serve as a cushion for shock and add a slight amount of weight needed in the bow of the boat.
  • a protector for application to the exterior forward bottom of the bow portion of the hull of a small water craft including a keel and having forwardly and inwardly curved sides forming a bow portion, said protector comprising a flexible resilient transparent generally pear-shaped sheet of plastic having a central longitudinal thickened portion adapted to underlie a portion of the forward end of the keel and tapering to a feathered edge,
  • said pear-shaped sheet of plastic being adapted to eX- tend rearwardly from the boat bow a distance equal to at least the length of the bow portion in a manner to provide an inconspicuous shield for the portion of the boat that it covers and which provides for the visual inspection of the surface of the boat to which it is applied.
  • a protector for mounting on the exterior forward undersurface of the bow portion of a small water craft including ⁇ a keel and having forwardly and inwardly curved sides forming a bow portion, said protector comprising a generally pear-shaped sheet of plastic-like material adapted to extend rearwardly from the boat bow approximately one-third the length of the boat,
  • said material having a central longitudinal thickened portion adapted to underlie a portion of the keel with the material extending therefrom in every direction lof a reduced graduated thickness terminating in a feathered edge,
  • a sheet-like protector adapted for xedly mounting in contact with the forward undersurface of the hull of a small watercraft having forwardly .and inwardly curved side walls forming a bow portion terminating in an up- ,wardly extending bow edge and a keel on said under surface,
  • said protector comprising ya sheet of ilexible resilient material ⁇ of a shape corresponding generally to the hull forward end undersurface, said sheet being adapted to extend rearwardly from the upwardly extending bow edge of the craft a distance equal to at least the length of the bow portion formed by the forwardly and inwardly curved side walls,
  • said sheet having a central longitudinal thickened portion adapted to underlie a portion ⁇ of the keel of the craft,
  • said longitudinal thickened portion being of uniform graduated thickness with the maximum thickness thereof adapted to underlie the forward bow edge of the craft and extend upwardly along 'at least a portion thereof,
  • said protector material extending from said central longitudinal thickened portion being uniformly reduced in thickness and terminating in a feathered edge at its periphery.
  • saidplastic material having a central longitudinal thickened portion underlying the keel
  • said protector plastic material being uniformly reduced in thickness outwardly therefrom and terminating in a feathered edge at its periphery.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Laminated Bodies (AREA)

Description

Nov. 30, 1965 A. w. LlcH'rl HULL PROTECTOR FOR SMALL CRAFT Filed April 22, 1964 INVENTOR ALBERT W. LICHTI United Statesv Patent O 3,220,026 HULL PROTECTOR FOR SMALL CRAFT Albert W. Lichti, P.O. Box 102, Upland, Calif. Filed Apr. 22, 1964, Ser. No. 361,830 4 Claims. (Cl. 9-1) This invention relates to the protection of the exposed surfaces of objects of various kinds from wear occasioned by contact with other objects, including the earth, and which devices shield or guard portions of such objects from injury due to impact with such objects.
The invention relates particularly to protectors for the bottom of the bow of the hull of a boat or small craft and the device is of a construction to lit and be aiixed over the portion of the hull to be protected in a manner to accomplish the purpose desired without interfering with the operation of the boat and particularly without offering resistance to its movement in the water.
Various types of small boats have been produced and utilized for various purposes, the life of which has been dependent to a degree upon the durability of the hull and keel at the bow of the boat, and which constantly are in contact with the earth in launching as well as in landing or beaching of the craft and at other times during the use of the boat or on the loading of the same ontoa common carrier, t-he bow and consequently the entire craft being short lived and therefore of limited life due to such rough usage.
It is an object of the invention to provide a simple inexpensive readily applicable protector of a llexible and resilient sheet, a pad of a general shape and character to be readily applied to form a protector forthe mainly contacted portion of the hull of small craft in a manner to afford essential and desired protection and when so applied will add little resistance and will not interfere with the operation of the boat.
Other objects and advantages of the invention will be apparent from the following description taken in conjunction with the accompanying drawing in which:
FIG. 1 is a bottom perspective illustrating the use of the invention;
FIG. 2, a section on the line 2-2 of FIG. l;
FIG. 3, a front elevation;
FIG. 4, a section on the line 4 4 of FIG. l;
FIG. 5, a bottom plan view illustrating the application of the invention to the bow of the boat; and
FIG. 6, a perspective viewed from above.
Briefly stated the invention is a sheet or pad of flexible resilient material generally pear-shaped or of the general shape and character of the under side of the bow portion of the hull portion ofv a boat and subjected to the most wear. It is adapted to underlie the heel and to be cemented or otherwise attached to the forward underside of a boat and of a plastic material suiciently tough to provide the desired protection, being ,composed of a sheet or pad tapering in every direction in thickness from a central area to .a thin feathered edge in order that it will offer little resistance to and not interfere with the operation of the boat.
With continued reference to the drawing, a boat or small craft with which the present invention is concerned includes a bottom 10, a keel 11, sides 12, a stern 13, and a bow 14 constituting the hull lof the craft. A hook 15 is located in the lower portion of the bow by which the craft may be pulled, towed, or secured to suitable moorings.
Small boats of this type scrape the earth or ground when launched and when landed or beached. Additional- 1y they engage various objects in the water and these scrapings or contact with objects produce wear, particularly to the hull, especially to the forward portion thereyof including the keel, and the present invention has been ICC created to serve as a protector for such portions subjected to undue wear.
The protector of the present invention may be a shield forming pad generally pear-shaped or triangular with a pointed forward end, diverging sides, and a blunt rear end, and may be composed of a sufficiently tough plastic, transparent or opaque, clear or colored, or of similar substance to provide protection against impact and abrasion of the forward bottom portion of the boat, and may be readily attached by a suitable adhesive to provide an inconspicuous shield allowing for inspection or -observation of the surface over which it is applied. Its length is approximately one-third of the hull to which it is to be applied. The invention consists of a flexible resilient sheet or pad having a relatively narrow forward portion 16 with an opening 17 through which the hook 15 of the boat is adapted to be .received when the protector is applied.
The edges 18, 19, 20, 21, and 22 of the device are relatively thin and divergingly uniformly taper from a thicker central rib or keel covering line 23 of maximum thickness adjacent the forward end thereof. The device is wide enough to cover the desired area and due to its. being feathered to a thin edge, it will not provide any appreciable drag on the craft at any time but will serve as a protection during launching and beaching, as well as when loading the craft on a common carrier.
It will be apparent from the foregoing that the present invention is a readily applied inexpensive attachment and not only will provide protection for the forward under surface of the hull without otherwise interfering with the ease of movement of the boat in the water, but will serve as a cushion for shock and add a slight amount of weight needed in the bow of the boat.
It will be obvious to one skilled in the art that various changes may be made in the invention without departing from the spirit and scope thereof and therefore the invention is not limited by that which is illustrated in the drawing and described in the specification, but only as indicated in the accompanying claims.
What is claimed is:
1. A protector for application to the exterior forward bottom of the bow portion of the hull of a small water craft including a keel and having forwardly and inwardly curved sides forming a bow portion, said protector comprising a flexible resilient transparent generally pear-shaped sheet of plastic having a central longitudinal thickened portion adapted to underlie a portion of the forward end of the keel and tapering to a feathered edge,
adhesive means for intimately securing said protector flat against the under side of the forward bottom portion of the hull,
said pear-shaped sheet of plastic being adapted to eX- tend rearwardly from the boat bow a distance equal to at least the length of the bow portion in a manner to provide an inconspicuous shield for the portion of the boat that it covers and which provides for the visual inspection of the surface of the boat to which it is applied.
2. A protector for mounting on the exterior forward undersurface of the bow portion of a small water craft, including `a keel and having forwardly and inwardly curved sides forming a bow portion, said protector comprising a generally pear-shaped sheet of plastic-like material adapted to extend rearwardly from the boat bow approximately one-third the length of the boat,
said material having a central longitudinal thickened portion adapted to underlie a portion of the keel with the material extending therefrom in every direction lof a reduced graduated thickness terminating in a feathered edge,
and means adapted for securing said protector in intimate contact with the under surface of the forward bow portion of the craft in a manner to form a shield between the forward undersurface of the craft and an object coming into contact therewith.
3. A sheet-like protector adapted for xedly mounting in contact with the forward undersurface of the hull of a small watercraft having forwardly .and inwardly curved side walls forming a bow portion terminating in an up- ,wardly extending bow edge and a keel on said under surface,
said protector comprising ya sheet of ilexible resilient material `of a shape corresponding generally to the hull forward end undersurface, said sheet being adapted to extend rearwardly from the upwardly extending bow edge of the craft a distance equal to at least the length of the bow portion formed by the forwardly and inwardly curved side walls,
said sheet having a central longitudinal thickened portion adapted to underlie a portion` of the keel of the craft,
said longitudinal thickened portion being of uniform graduated thickness with the maximum thickness thereof adapted to underlie the forward bow edge of the craft and extend upwardly along 'at least a portion thereof,
said protector material extending from said central longitudinal thickened portion being uniformly reduced in thickness and terminating in a feathered edge at its periphery.
4 i 4. The combination of a relatively small boat having a hull including a keel and inwardly curved boat sides at its forward end terminating in a bow edge thereby defining a forward bow portion of appreciable length,
a generally triangular sheet of plastic material intimately and symmetrically secured to the undersurface of said bow portion so as to extend wit-h increasing width from said bow edge rearwardly a distance equal to at least the length of said hull forward bow portion for protection against impact and abrasion,
saidplastic material having a central longitudinal thickened portion underlying the keel,
said protector plastic material being uniformly reduced in thickness outwardly therefrom and terminating in a feathered edge at its periphery.L
References Cited by the Examiner UNITED STATES PATENTS 1,124,637V 1/1915 Miller 9-6 1,529,944 3/1925 Burian 9-6 X 1,859,374 5/1'932 Orkin 114--219 X 2,337,787 12/1943 Waller 114-219 3,032,784 5/1962 Randrup 9-2 FOREIGN PATENTS 782,236 3/1935 France,
MILTON BUCHLER, Primary Examiner.

Claims (1)

  1. 2. A PROTECTOR FOR MOUNTING ON THE EXTERIOR FORWARD UNDERSURFACE OF THE BOW PORTION OF A SMALL WATER CRAFT, INCLUDING A KEEL AND HAVING FORWARDLY AND INWARDLY CURVED SIDES FORMING A BOW PORTION, SAID PROTECTOR COMPRISING A GENERALLY PEAR-SHAPED SHEET OF PLASTIC-LIKE MATERIAL ADAPTED TO EXTEND REARWARDLY FROM THE BOAT BOW APPROXIMATELY ONE-THIRD THE LENGTH OF THE BOAT, SAID MATERIAL HAVING A CENTRAL LONGITUDINAL THICKENED PORTION ADAPTED TO UNDERLIE A PORTION OF THE KEEL WITH THE MATERIAL EXTENDING THEREFROM IN EVERY DIRECTION OF A REDUCED GRADUATED THICKNESS TERMINATING IN A FEATHERED EDGE, AND MEANS ADAPTED FOR SECURING SAID PROTECTOR IN INTIMATE CONTACT WITH THE UNDER SURFACE OF THE FORWARD BOW PORTION OF THE CRAFT IN A MANNER TO FORM A SHIELD BETWEEN THE FORWARD UNDERSURFACE OF THE CRAFT AND AN OBJECT COMING INTO CONTACT THEREWITH.
US361830A 1964-04-22 1964-04-22 Hull protector for small craft Expired - Lifetime US3220026A (en)

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428011A (en) * 1966-08-23 1969-02-18 George F Motter Dredge pipe pontoons
US4653419A (en) * 1984-11-26 1987-03-31 Brandon Larry L Hull Protecting fender apron
US4751891A (en) * 1986-11-17 1988-06-21 Wilson John T Bow protector
US4762080A (en) * 1987-04-30 1988-08-09 Pearson Bruce E Consumable replaceable bow guard
US4815412A (en) * 1987-08-06 1989-03-28 Cassaro Jr Michael Boat bow protector
US4909172A (en) * 1988-05-09 1990-03-20 William E. Hamby Boat bottom protector
US4962719A (en) * 1989-04-05 1990-10-16 Hughes Timothy R Protective boat hull device
US5117764A (en) * 1991-03-28 1992-06-02 Kretzer Jr Richard E Protective hull liner for jet skis
US5357890A (en) * 1993-10-25 1994-10-25 Mason Jr John E Boat keel/hull protector
US5485801A (en) * 1994-11-17 1996-01-23 Gibbs; Ronnie D. Apparatus and methods for shielding the keel and/or bow of a watercraft
FR2726245A1 (en) * 1994-11-01 1996-05-03 Mission Yachts Plc Sailing boat design for improved protection from lightning strikes
US5791280A (en) * 1996-12-23 1998-08-11 Egan; Kerry P. Towable cargo watercraft that is transportable on a car-top carrier
US5803010A (en) * 1995-10-30 1998-09-08 Roy; James G. Watercraft hull protective apparatus
US5853650A (en) * 1994-06-20 1998-12-29 Loennoe; Anders Method of manufacturing boat hulls in a female mould
US5891551A (en) * 1997-07-14 1999-04-06 Gibbs; Ronnie D. Apparatus for reducing drag across a flow surface
US5967078A (en) * 1997-09-23 1999-10-19 Brunswick Corporation Detachable wear strips for the hull of a watercraft
US6148754A (en) * 1998-05-15 2000-11-21 Carlie Lee Sims, Jr. Boat keel/hull protector
US6192818B1 (en) 1999-08-18 2001-02-27 Sue Rogers-Smith Protective device for watercraft
ITBS20080129A1 (en) * 2008-07-03 2010-01-04 Fabio Bellini SHIELD OF PROTECTION FOR THE BOW OF BOATS
US8166903B1 (en) 2009-06-08 2012-05-01 The United States Of America As Represented By The Secretary Of The Navy Deadrise-altering adjunct for marine hull bottom
US9688368B2 (en) 2015-01-08 2017-06-27 David Schaefer Pontoon shields
US10239592B1 (en) 2017-11-02 2019-03-26 Taylor Made Group, Llc Boat keel guard
PL126710U1 (en) * 2017-10-17 2019-04-23 Barzak Bogdan Przed Budowlane Barzak Strengthening element of a bow of a watercraft hull

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1124637A (en) * 1913-04-14 1915-01-12 W H Mullins Co Canoe.
US1529944A (en) * 1924-12-05 1925-03-17 Burian Bogut Collapsible metal boat
US1859374A (en) * 1931-06-23 1932-05-24 Calwiss Ind Ltd Prow construction for boats
FR782236A (en) * 1934-12-03 1935-05-31 Light craft
US2337787A (en) * 1942-06-01 1943-12-28 Jr William Waller Marine shock absorber
US3032784A (en) * 1960-03-21 1962-05-08 Benjamin F Randrup Foldable boat

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1124637A (en) * 1913-04-14 1915-01-12 W H Mullins Co Canoe.
US1529944A (en) * 1924-12-05 1925-03-17 Burian Bogut Collapsible metal boat
US1859374A (en) * 1931-06-23 1932-05-24 Calwiss Ind Ltd Prow construction for boats
FR782236A (en) * 1934-12-03 1935-05-31 Light craft
US2337787A (en) * 1942-06-01 1943-12-28 Jr William Waller Marine shock absorber
US3032784A (en) * 1960-03-21 1962-05-08 Benjamin F Randrup Foldable boat

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3428011A (en) * 1966-08-23 1969-02-18 George F Motter Dredge pipe pontoons
US4653419A (en) * 1984-11-26 1987-03-31 Brandon Larry L Hull Protecting fender apron
US4751891A (en) * 1986-11-17 1988-06-21 Wilson John T Bow protector
US4762080A (en) * 1987-04-30 1988-08-09 Pearson Bruce E Consumable replaceable bow guard
US4815412A (en) * 1987-08-06 1989-03-28 Cassaro Jr Michael Boat bow protector
US4909172A (en) * 1988-05-09 1990-03-20 William E. Hamby Boat bottom protector
US4962719A (en) * 1989-04-05 1990-10-16 Hughes Timothy R Protective boat hull device
US5117764A (en) * 1991-03-28 1992-06-02 Kretzer Jr Richard E Protective hull liner for jet skis
US5357890A (en) * 1993-10-25 1994-10-25 Mason Jr John E Boat keel/hull protector
US5853650A (en) * 1994-06-20 1998-12-29 Loennoe; Anders Method of manufacturing boat hulls in a female mould
FR2726245A1 (en) * 1994-11-01 1996-05-03 Mission Yachts Plc Sailing boat design for improved protection from lightning strikes
US5485801A (en) * 1994-11-17 1996-01-23 Gibbs; Ronnie D. Apparatus and methods for shielding the keel and/or bow of a watercraft
US5803010A (en) * 1995-10-30 1998-09-08 Roy; James G. Watercraft hull protective apparatus
US5791280A (en) * 1996-12-23 1998-08-11 Egan; Kerry P. Towable cargo watercraft that is transportable on a car-top carrier
US5891551A (en) * 1997-07-14 1999-04-06 Gibbs; Ronnie D. Apparatus for reducing drag across a flow surface
AU719460B2 (en) * 1997-07-14 2000-05-11 Ronnie D Gibbs Apparatus for reducing drag over a flow surface
US5967078A (en) * 1997-09-23 1999-10-19 Brunswick Corporation Detachable wear strips for the hull of a watercraft
US6148754A (en) * 1998-05-15 2000-11-21 Carlie Lee Sims, Jr. Boat keel/hull protector
US6192818B1 (en) 1999-08-18 2001-02-27 Sue Rogers-Smith Protective device for watercraft
ITBS20080129A1 (en) * 2008-07-03 2010-01-04 Fabio Bellini SHIELD OF PROTECTION FOR THE BOW OF BOATS
US8166903B1 (en) 2009-06-08 2012-05-01 The United States Of America As Represented By The Secretary Of The Navy Deadrise-altering adjunct for marine hull bottom
US9688368B2 (en) 2015-01-08 2017-06-27 David Schaefer Pontoon shields
US10005528B2 (en) 2015-01-08 2018-06-26 Cascade Wellness Technologies, Inc. Pontoon shields
PL126710U1 (en) * 2017-10-17 2019-04-23 Barzak Bogdan Przed Budowlane Barzak Strengthening element of a bow of a watercraft hull
PL71019Y1 (en) * 2017-10-17 2019-09-30 Barzak Bogdan Przed Budowlane Barzak Strengthening element of a bow of a watercraft hull
US10239592B1 (en) 2017-11-02 2019-03-26 Taylor Made Group, Llc Boat keel guard

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