US2355302A - Sureboard - Google Patents
Sureboard Download PDFInfo
- Publication number
- US2355302A US2355302A US366052A US36605240A US2355302A US 2355302 A US2355302 A US 2355302A US 366052 A US366052 A US 366052A US 36605240 A US36605240 A US 36605240A US 2355302 A US2355302 A US 2355302A
- Authority
- US
- United States
- Prior art keywords
- surf board
- board
- surf
- wave
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/50—Boards characterised by their constructional features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor
Definitions
- This 'invention relates: toaquatic amusement devices and in particular to surf boards.
- Onefobj ect of ⁇ this invention is to provide'a. surf board having means associated therewith for increasing the driving effect of the Wave upon the I surf board.
- Another object is to provide a surf board having a. step ⁇ on the bottom which catches the swirl of the crest oiga wave and increases the propulsive effect thereof.
- Another object is toprovide a surf, board asset forth in the preceding object whereinthe step' ⁇ is V shaped, so that ⁇ a tendency of the board to yaw or turn is counteracted by the pressure being increased on one side of the V step and lessened on the other side.
- Another object is to provide a surf board having a plurality of steps on the bottom, these steps providing portions for the whirling crest of the wave to grip, thereby increasing the eiiiciency of the surf board by enhancing the propelling force thereon.
- Figure 1 is a top plan View of a surf board with a V-shaped step, according to one embodiment of the invention.
- Figure 2 is a side elevation of the surf board shown in Figure 1.
- Figure 3 is a top plan view of a modified form of surf board having a straight step.
- Figure 4 is a top plan View of a modified form of surf board having a plurality of V-shaped steps.
- Figure 5 is a side elevation of the surf board shown in Figure 4.
- Figure 6 is a diagrammatic side elevation of the surf board of Figures 1 and 2 in use.
- the surf board of this invention consists of an elongated floating member, such as a wooden plank, having a step on the bottom thereof.
- the step is either V-shaped or extends straight across the surf board.
- a further modiiication contemplates the use of a plurality of steps on the bottom of the surf board.
- the step on the bottom of the surf board increases the propelling effect by giving an abutment which the whirling crest of the wave can grip.
- V-shaped step makes the surf board partially self-steering since any tendency of the board to yaw or turn is counteracted by the pressure being increased on one side of the V and decreased on the other side.
- Figure 1 shows a surf board I! having a pointed bow II, curved stern I2, and longitudinal sides I3.
- the surf board I0 is provided with an upper surface I4 and lower surfaces I54 and 'I6 on different levels and separatedA by a V-shaped step I'I having relatively angledvportions.I3 ⁇ and I9.
- the lower surfaces I5 and' I6 are sloped relativelyto one another so-that the surf board ⁇ is thicker at the step I1 than it isat the bow II ⁇ The Surfboard ⁇ 2
- the modified form of surf board 30 shown in Figures 4 and 5 is generally similar to that shown in Figure 1 except that the bottomvsurfaces I5 and I 6 are separated by multiple V-shaped steps 3
- This surf board is thus similar to that of Figure 1, but with an additional step provided.
- the user swims out with the board or is towed out by boat to a point where large waves begin to roll in toward the shore.
- the swimmer then turns the surf board toward the shore, such as by paddling it around with his hands.
- the V-shaped step of Figures 1, 2, 4 and 5 makes the surf board at least partially self-steering, as compared with the surf board of Figure 3 with its straight step.
- the multiple or plural steps of the surf board of Figures 4 and 5 distribute the thrusting eiect of the wave between the two sets of shoulders provided by the two steps.
- the sport of ⁇ surf riding cannot be practiced at every beach but is confined to beaches where the water is sufficiently shallow and the approach suiciently gradual so that large waves will be created and will roll rapidly toward theshore.
- the ordinary surf board with its comparatively smooth bottom is therefore capable of use only in a few limited locations.
- the surf board of the present invention can be used at many beaches where the ordinary surf board would be comparatively useless since the step on the bottom of the present surf board is gripped by the whirling crest of the wave and thus the bottom is propelled rapidly, where without this step it would be propelled too slowly or not at all.
- a wave propelled surf board comprising an elongated plank member relatively thin in proportion to its length and width and having in-,l
- a Wave propelled surf board comprising an elongated plank member 'relatively thin in proportion to its length and width and having a flat plane upper surfacegand a plurality olf inclined bottom surfaces sloping relatively to one another toward the middle from relativelythin ends and terminating on different levels, said inclined bottomsurfaces being'connected by a vertical Wall' at their point of termination to provide a shoulder therebetween, and said shoulder being formed ataV location to be engaged by the crest of a wave.
- ⁇ A wave propelled surf board comprising a lelongated plank member relatively thin in pro- 15- Vpor-tion to its length and width and having a plurality of similarly arranged horizontally V- shaped steps on the underside thereof, said V- shaped steps being adjacent one another and being approximately centrally positioned so as to be engaged by the crest of a Wave.
- a Wave propelled surf board comprising an elongated plank member relatively thin in proportion to its length and width and having a plurality of bottom surfaces in diierent planes separated from one another by a step, said step having vertical walls extending obliquely from the edges ofthe board in a horizontally V-shaped Apath with the arms ofthe V converging toward a junction at the center thereof, said vertical Walls being positioned intermediate the ends of the board in a location, to be engaged by the crest of a wave.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Finishing Walls (AREA)
Description
Aug. 8, 1944.
R. G` KIRCHNER 2,355,302
SURF BOARD Filed Nov. 18, 1940 :Slmcntor G ttorncgs Patented Aug. 8, 1944 ENT OFFICE `sUREBoARD. l
Richard GiKirchner, Sian Diego, Calif. Application November 1s,1940seria1N0-36a052 I Claims.
This 'invention relates: toaquatic amusement devices and in particular to surf boards.
Onefobj ect of `this invention is to provide'a. surf board having means associated therewith for increasing the driving effect of the Wave upon the I surf board.
Another object is to provide a surf board having a. step` on the bottom which catches the swirl of the crest oiga wave and increases the propulsive effect thereof. I Y
Another object is toprovide a surf, board asset forth in the preceding object whereinthe step'` is V shaped, so that` a tendency of the board to yaw or turn is counteracted by the pressure being increased on one side of the V step and lessened on the other side.
Another object is to provide a surf board having a plurality of steps on the bottom, these steps providing portions for the whirling crest of the wave to grip, thereby increasing the eiiiciency of the surf board by enhancing the propelling force thereon.
In the drawing:
Figure 1 is a top plan View of a surf board with a V-shaped step, according to one embodiment of the invention.
Figure 2 is a side elevation of the surf board shown in Figure 1.
Figure 3 is a top plan view of a modified form of surf board having a straight step.
Figure 4 is a top plan View of a modified form of surf board having a plurality of V-shaped steps.
Figure 5 is a side elevation of the surf board shown in Figure 4.
Figure 6 is a diagrammatic side elevation of the surf board of Figures 1 and 2 in use.
In general, the surf board of this invention consists of an elongated floating member, such as a wooden plank, having a step on the bottom thereof. The step is either V-shaped or extends straight across the surf board. A further modiiication contemplates the use of a plurality of steps on the bottom of the surf board. The step on the bottom of the surf board increases the propelling effect by giving an abutment which the whirling crest of the wave can grip. 'Ihe V-shaped step makes the surf board partially self-steering since any tendency of the board to yaw or turn is counteracted by the pressure being increased on one side of the V and decreased on the other side.
Referring to the drawing in detail, Figure 1 shows a surf board I!) having a pointed bow II, curved stern I2, and longitudinal sides I3. The surf board I0 is provided with an upper surface I4 and lower surfaces I54 and 'I6 on different levels and separatedA by a V-shaped step I'I having relatively angledvportions.I3` and I9. IAs shown inV Figure 2, the lower surfaces I5 and' I6 are sloped relativelyto one another so-that the surf board `is thicker at the step I1 than it isat the bow II `The Surfboard `2|), however, kis provided with a `straight stepf 2 I which extends acrosslthebottom of the surf board at right angles tothe sides 4I3 thereofinstead of the V-.shaped step II of Figure 1.
The modified form of surf board 30 shown in Figures 4 and 5 is generally similar to that shown in Figure 1 except that the bottomvsurfaces I5 and I 6 are separated by multiple V-shaped steps 3| and 32 having relatively angled walls 33, 34, 35 and 36 respectively. This surf board is thus similar to that of Figure 1, but with an additional step provided. v
In the operation of the surf board, the user swims out with the board or is towed out by boat to a point where large waves begin to roll in toward the shore. The swimmer then turns the surf board toward the shore, such as by paddling it around with his hands.
When the crest of a large wave comes beneath the surf board, this crest grips the step on the surf board as it whirls onward, propelling the surf board rapidly toward the shore. Thus the step catches the swirl at the top of a wave and enhances the driving power of the wave upon the i surf board.
The V-shaped step of Figures 1, 2, 4 and 5 makes the surf board at least partially self-steering, as compared with the surf board of Figure 3 with its straight step. The multiple or plural steps of the surf board of Figures 4 and 5 distribute the thrusting eiect of the wave between the two sets of shoulders provided by the two steps.
The sport of `surf riding cannot be practiced at every beach but is confined to beaches where the water is sufficiently shallow and the approach suiciently gradual so that large waves will be created and will roll rapidly toward theshore. The ordinary surf board with its comparatively smooth bottom is therefore capable of use only in a few limited locations. The surf board of the present invention, however, can be used at many beaches where the ordinary surf board would be comparatively useless since the step on the bottom of the present surf board is gripped by the whirling crest of the wave and thus the bottom is propelled rapidly, where without this step it Would be propelled too slowly or not at all.
While a specific embodiment of the invention has been described and illustrated, it will be understood that various modifications may be made within the scope of the appended claims Without departing from the spirit of the invention.
What I claim is: i K f 1. A wave propelled surf board comprising an elongated plank member relatively thin in proportion to its length and width and having in-,l
clined bottom walls converging from the front and rear of said board to the intermediate portion'V thereof and terminating at their inner ends onf different levels, obliquely-disposed vertical walls connecting said inclined bottom Walls at theirv point of termination to provide an intermediate V-shaped stepped shoulder lportion adapted to be engaged by the crest-of a Wave. i' v i 2. A Wave propelled surf board comprising an elongated plank member 'relatively thin in proportion to its length and width and having a flat plane upper surfacegand a plurality olf inclined bottom surfaces sloping relatively to one another toward the middle from relativelythin ends and terminating on different levels, said inclined bottomsurfaces being'connected by a vertical Wall' at their point of termination to provide a shoulder therebetween, and said shoulder being formed ataV location to be engaged by the crest of a wave. A A
`A wave propelled surf board comprising a lelongated plank member relatively thin in pro- 15- Vpor-tion to its length and width and having a plurality of similarly arranged horizontally V- shaped steps on the underside thereof, said V- shaped steps being adjacent one another and being approximately centrally positioned so as to be engaged by the crest of a Wave.
5. A Wave propelled surf board comprising an elongated plank member relatively thin in proportion to its length and width and having a plurality of bottom surfaces in diierent planes separated from one another by a step, said step having vertical walls extending obliquely from the edges ofthe board in a horizontally V-shaped Apath with the arms ofthe V converging toward a junction at the center thereof, said vertical Walls being positioned intermediate the ends of the board in a location, to be engaged by the crest of a wave.
' Y RICHARD G. KIRCHNER.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US366052A US2355302A (en) | 1940-11-18 | 1940-11-18 | Sureboard |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US366052A US2355302A (en) | 1940-11-18 | 1940-11-18 | Sureboard |
Publications (1)
Publication Number | Publication Date |
---|---|
US2355302A true US2355302A (en) | 1944-08-08 |
Family
ID=23441477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US366052A Expired - Lifetime US2355302A (en) | 1940-11-18 | 1940-11-18 | Sureboard |
Country Status (1)
Country | Link |
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US (1) | US2355302A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2914335A (en) * | 1957-02-18 | 1959-11-24 | Harvey F Rivard | Ski structure |
US3747138A (en) * | 1970-10-26 | 1973-07-24 | D Morgan | Hydrofoil surfboards |
FR2626239A1 (en) * | 1988-01-21 | 1989-07-28 | S R Ind | Sailboard which has been improved by creating a layer of air under the surface of the hull |
US5944570A (en) * | 1998-05-28 | 1999-08-31 | Appleby; J. Randolph | Surf riding craft |
US20110104969A1 (en) * | 2009-10-30 | 2011-05-05 | Leblanc Lester | Body board |
US10435120B2 (en) | 2017-12-20 | 2019-10-08 | Alverno Management Company | Wave riding boards |
EP4029770A1 (en) * | 2021-01-08 | 2022-07-20 | Forward Maui LLC | Hydrofoil watercraft and method of manufacture of the same |
-
1940
- 1940-11-18 US US366052A patent/US2355302A/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2914335A (en) * | 1957-02-18 | 1959-11-24 | Harvey F Rivard | Ski structure |
US3747138A (en) * | 1970-10-26 | 1973-07-24 | D Morgan | Hydrofoil surfboards |
FR2626239A1 (en) * | 1988-01-21 | 1989-07-28 | S R Ind | Sailboard which has been improved by creating a layer of air under the surface of the hull |
US5944570A (en) * | 1998-05-28 | 1999-08-31 | Appleby; J. Randolph | Surf riding craft |
US20110104969A1 (en) * | 2009-10-30 | 2011-05-05 | Leblanc Lester | Body board |
US10435120B2 (en) | 2017-12-20 | 2019-10-08 | Alverno Management Company | Wave riding boards |
EP4029770A1 (en) * | 2021-01-08 | 2022-07-20 | Forward Maui LLC | Hydrofoil watercraft and method of manufacture of the same |
US11649014B2 (en) | 2021-01-08 | 2023-05-16 | Forward Maui LLC | Hydrofoil watercraft and method of manufacture of the same |
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