US2745118A - Catamaran - Google Patents

Catamaran Download PDF

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Publication number
US2745118A
US2745118A US316577A US31657752A US2745118A US 2745118 A US2745118 A US 2745118A US 316577 A US316577 A US 316577A US 31657752 A US31657752 A US 31657752A US 2745118 A US2745118 A US 2745118A
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platform
catamaran
channels
pontoons
channel
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US316577A
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Helen V Potts
Potts Helen Victoria
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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 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B7/06—Collapsible, foldable, inflatable or like vessels having parts of non-rigid material
    • B63B7/08—Inflatable
    • B63B7/082—Inflatable having parts of rigid material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/02—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement
    • B63B1/10—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls
    • B63B1/12—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly
    • B63B1/121—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving lift mainly from water displacement with multiple hulls the hulls being interconnected rigidly comprising two hulls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B3/00—Hulls characterised by their structure or component parts
    • B63B3/02—Hulls assembled from prefabricated sub-units
    • B63B3/08—Hulls assembled from prefabricated sub-units with detachably-connected sub-units
    • B63B2003/085—Multiple hull vessels, e.g. catamarans, assembled from detachably-connected sub-units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B7/00—Collapsible, foldable, inflatable or like vessels
    • B63B2007/003—Collapsible, foldable, inflatable or like vessels with foldable members

Definitions

  • Theprineipal object of this invention is to provide a catamaran which "can be collapsed into “a compact” package and in which the pontoons are held to the framework by novel means creating no drag or water resistance.
  • Another object of the invention isto provide a catamaran wherein inflatable pontoons are held to the framework by the inflation thereof, thereby eliminating any encircling straps.
  • Still another object of the invention is to provide rigid channels, below the rigid framework of a catamaran, which channels receive and retain the upper half of the inflated pontoons without extending below the waterline.
  • a further object of the invention is to provide an improved catamaran having a foldable framework and deflatable pontoons, together with a foldable outboard motor mounting and integral spray guards thus forming a portable craft of great versatility and convenience.
  • Fig. 1 is a plan view of the preferred form of the invention
  • Fig. 2 is a side view of the invention shown in Fig. l, partly in section;
  • Fig. 3 is an end view, in section, on line 33 of Fig. 2;
  • Fig. 4 is an enlarged front end view of the platform and channels of the invention in folded condition and Fig. 5 is a side view of the device shown in Fig. 4.
  • a pair of pontoons A and B are provided each identical to the other and spaced apart one or more feet to lie in parallelism.
  • Each pontoon such as A preferably has an upwardly tapered forward end 23 and an upwardly tapered rearward end 24, the ends being separated by a cylindrical intermediate section 25.
  • the pontoons A and B are of flexible material such as water proof plastic, rubber or the like and may be inflated or deflated with air by means of an air valve 26.
  • each pontoon such as A is divided into several air compartments such as 220, 221 and 222, by flexible partitions such as 224 and 225, each compartment having a separate air valve such as 26 or 226.
  • a platform C of rigid material such as metal or plywood is provided having a leading edge 41, a trailing edge 42 and side edges 43 and 44.
  • the platform C is of approximately the same length as the cylindrical intermediate portions 25 of pontoons A and B and is of sufficient the channel and thedintermediate portion ,25'.
  • channels D and E also of rigid materialzsuch as-metal aorwplywood; "each extending longitudinally .below the underside ofnone'bf :the opposite sides of 'theplatform.
  • Channels:D and E are spaced apart one or nior'efettoilie in: parallelism "andto receive the intermediate iportions 25 :o'f pomt'oons'A-zandB.
  • Each channel such as Dis inverted togprovide tanAuthenticizontal base wall :60: and a 'pair' ofispaced npartylverticalaside waHs's61 and .62 which dependflovmwardly from .the 'base wall.
  • such protuberances maybe of resilient material such as rubber and may extend above and slightly over the platform C thereby preventing accidental displacement of the platform in a vertical direction.
  • Platform C and channels D and E are preferably made in at least two sections, each platform section or 101 having channel portions 102, 103 or 104, 105 integral therewith or fixed thereto.
  • the meeting edges of sections '100 and 101 are hinged transversely of the platform at 107 so that they will fold flatwise against each other as indicated in Figs. 4 and 5.
  • the side walls 61 and 62, of each channel such as D be
  • a clamp 110 is provided on each side wall such as 62, whereby the various sections of channels D and B may be locked together when in use to form a rigid unit.
  • Braces 121 'and 122 are pivotally connected to member 120 with their lower ends 123 and 124 releasably held by set screws 125 and 126 in threaded holes 127 and 128 in platform C.
  • Member 120 is transversely pivoted at 119 to fold downwardly from its upstanding position when the set screws 125 and 126 are released from holes 127 and 128.
  • the side edges 43 and 44 of platform C project substantially beyond the side walls 61 A and 62 of channels D and E and thus form an horizontal ly projecting spray guard along the longitudinal edges of the platform.
  • the catamaran may be carried in an automobile with pontoons A and B deflated and the platform C, channels ,D and E and member 120 folded in the form shown in Figs. 4 and 5.
  • the platform sections 100 and 101 are unfolded into extension with each other, the side walls 61 and 62 are unfolded to form channels D and E and the member 120 is folded upwardly and fixed by set screws 125 and 126.
  • Pontoons A and B are then partially inflated by valves such as 26, protuberances 71 and 72 are properly positioned at the ends of the channels and the pontoons further inflated until they are tightly gripped in channels Band B.
  • Clamp 110 may then be locked, an outboard motor attached to member 120 and the catamaran operated as desired. The procedure is reversed to collapse the device into an easily transported bundle.
  • a catamaran comprising a pair of identical, spaced apart separate pontoons of inflated flexible material, each pontoon being straight and having upwardly tapered ends and a cylindrical intermediate portion between said ends; a horizontal platform of rigid material positioned above, and extending across, the intermediate portions of said pontoons, said platform having a leading edge and a trailing edge; and a pair of identical, spaced apart straight channels of rigid material mounted on the underside of each opposite side of said platformfor receiving and gripping said pontoons, each channel having a horizontal base wall and a pair of spaced apart downwardly depending vertical sidewalls, and each said channel tangentially contacting and frictionally gripping the upper half of the cylindrical intermediate portion of an inflated pontoon throughout the length of itscylindrical portion by pneumatic pressure and being detachable from said pontoon by pontoon deflation alone.
  • a catamaran as specified in claim 1 wherein said platform is formed of at least two longitudinally extending sections hinged to each other at their transverse meeting edges to fold flatwise against each other and the side walls of each channel are sectionalized and hingedly connected to said sections for folding flatwise thereagainst.

Description

May 15, 1956 T. A. POTTS ET AL CATAMARAN Filed Oct. 24, 1952 F zlq. 5.
INVENTOR. THOMAS A. POTTS BY HELEN V. POTTS P a m T-PM ATTORNEYS .toions'so'ftliat' the catamaran may b'e'converte' CATAMAiRAN *A. Potts and Hemnv.rorajaagwagm' he;
eler 1.Vi ctoria Potts, execufi'iit'of said Thomas ,A'QPo'tt's, aeeeaseu Application October 24,- 1952,:Serial-No.616577 412mm. "(C11 9-2 Thisinvention relatestomowiboatszand butboa'rd motor Heretofore, boats have been made on the catamaran principle and have included a pairof floats' or pontoons with a framework connecting thesameabove the level of Water. Collapsible rigid frameworkshave been used in came-imam with collapsible, or telesc'opi easily earried'packag'e when not inus'e. Usuallfiliowever; straps completely'ericircliiigthepontoons have been provided toho'ldthe ponteons'totherrainewdrka straps "have tended to be 'difii'cult to install "to offer "considerable resistance tothe passage of thepdfiteon "through the water;
'Theprineipal object of this invention is to provide a catamaran which "can be collapsed into "a compact" package and in which the pontoons are held to the framework by novel means creating no drag or water resistance.
Another object of the invention isto provide a catamaran wherein inflatable pontoons are held to the framework by the inflation thereof, thereby eliminating any encircling straps.
Still another object of the invention is to provide rigid channels, below the rigid framework of a catamaran, which channels receive and retain the upper half of the inflated pontoons without extending below the waterline.
A further object of the invention is to provide an improved catamaran having a foldable framework and deflatable pontoons, together with a foldable outboard motor mounting and integral spray guards thus forming a portable craft of great versatility and convenience.
In the drawing:
Fig. 1 is a plan view of the preferred form of the invention;
Fig. 2 is a side view of the invention shown in Fig. l, partly in section;
Fig. 3 is an end view, in section, on line 33 of Fig. 2;
Fig. 4 is an enlarged front end view of the platform and channels of the invention in folded condition and Fig. 5 is a side view of the device shown in Fig. 4.
A pair of pontoons A and B are provided each identical to the other and spaced apart one or more feet to lie in parallelism. Each pontoon such as A, preferably has an upwardly tapered forward end 23 and an upwardly tapered rearward end 24, the ends being separated by a cylindrical intermediate section 25. The pontoons A and B are of flexible material such as water proof plastic, rubber or the like and may be inflated or deflated with air by means of an air valve 26. Preferably each pontoon such as A is divided into several air compartments such as 220, 221 and 222, by flexible partitions such as 224 and 225, each compartment having a separate air valve such as 26 or 226.
A platform C of rigid material such as metal or plywood is provided having a leading edge 41, a trailing edge 42 and side edges 43 and 44. The platform C is of approximately the same length as the cylindrical intermediate portions 25 of pontoons A and B and is of sufficient the channel and thedintermediate portion ,25'.
wall 60 of the channel.
"Width to enteind between, and above, the. said spontoons leaving.a-suitable-spaee"therebetween.
.Meuntefl bdowhm platform Care-a pair of identical channels D and E also of rigid materialzsuch as-metal aorwplywood; "each extending longitudinally .below the underside ofnone'bf :the opposite sides of 'theplatform. Channels:D and E are spaced apart one or nior'efettoilie in: parallelism "andto receive the intermediate iportions 25 :o'f pomt'oons'A-zandB. Each channel such as Dis inverted togprovide tanheizizontal base wall :60: and a 'pair' ofispaced npartylverticalaside waHs's61 and .62 which dependflovmwardly from .the 'base wall. Aslibest shownin"Fig-. 3, when a pontoonrsuch .asz A" is inflated in 2' its ichaanersueh as D, :the upper half of the cylindrical intermediatefportion 25 tangentially engages-base wall 60 and sidewallszol and 62 withq'akfrictional-engagement :at 63, 64*mid 65. Since the material of the pontoon such as Aiiszfleiible when flte -iair-pressure innthe-spontooniszinerea'sed the grip, of thechannel' D on the upper half :of the .portion 25 becomes more and-more: firm throughout :the length 10f .Therside walls 61- an'du62 rnay'be longer ;:than :shown, .if zdes'ired, .withontuinqany way creating 'water'resistarice and'the pressure in. pontoonsAeand z-Bn'nafy bei suflicientrto dis tort the :upperih-alf inf-portion 25'1'nto the :shape rof theu'nside *Df the channel sD. .Tofoceupyz less'rspaceiwheninofinuse, thepontoons :A'zand 'Bimay be released from channels? D and E andplatform-C byamerelydeflatingatheisanre. The
, 'g'reater'tlie weight of platform C, and ithezgrea ter the load ucarniedbthereon; the tighterx'the ichannels :1) 111111513 'willsgr-ip the inflatedipontoons A'andB.
or rearwardly out of the channels D and E. It will be noted that, if desired, such protuberances maybe of resilient material such as rubber and may extend above and slightly over the platform C thereby preventing accidental displacement of the platform in a vertical direction.
Platform C and channels D and E are preferably made in at least two sections, each platform section or 101 having channel portions 102, 103 or 104, 105 integral therewith or fixed thereto. The meeting edges of sections '100 and 101 are hinged transversely of the platform at 107 so that they will fold flatwise against each other as indicated in Figs. 4 and 5. It is also preferred that the side walls 61 and 62, of each channel such as D, be
hinged longitudinally of platform C as at 69 and 70, to
fold parallel to the platform and overlying the bottom Thus not only can the pontoons A and B be deflated and removed, but the platform C and channels D and E are foldable into an easily portable package which can be unfolded when ready to be used. A clamp 110 is provided on each side wall such as 62, whereby the various sections of channels D and B may be locked together when in use to form a rigid unit.
Upstanding from the central portion of the trailing edge 42 of platform C is a rigid member arranged to receive the clamps of an outboard motor. Braces 121 'and 122 are pivotally connected to member 120 with their lower ends 123 and 124 releasably held by set screws 125 and 126 in threaded holes 127 and 128 in platform C. Member 120 is transversely pivoted at 119 to fold downwardly from its upstanding position when the set screws 125 and 126 are released from holes 127 and 128.
In its preferred form, the side edges 43 and 44 of platform C project substantially beyond the side walls 61 A and 62 of channels D and E and thus form an horizontal ly projecting spray guard along the longitudinal edges of the platform.
In operation the catamaran may be carried in an automobile with pontoons A and B deflated and the platform C, channels ,D and E and member 120 folded in the form shown in Figs. 4 and 5.
In use the platform sections 100 and 101 are unfolded into extension with each other, the side walls 61 and 62 are unfolded to form channels D and E and the member 120 is folded upwardly and fixed by set screws 125 and 126. Pontoons A and B are then partially inflated by valves such as 26, protuberances 71 and 72 are properly positioned at the ends of the channels and the pontoons further inflated until they are tightly gripped in channels Band B. Clamp 110 may then be locked, an outboard motor attached to member 120 and the catamaran operated as desired. The procedure is reversed to collapse the device into an easily transported bundle.
I claim:
1. A catamaran comprising a pair of identical, spaced apart separate pontoons of inflated flexible material, each pontoon being straight and having upwardly tapered ends and a cylindrical intermediate portion between said ends; a horizontal platform of rigid material positioned above, and extending across, the intermediate portions of said pontoons, said platform having a leading edge and a trailing edge; and a pair of identical, spaced apart straight channels of rigid material mounted on the underside of each opposite side of said platformfor receiving and gripping said pontoons, each channel having a horizontal base wall and a pair of spaced apart downwardly depending vertical sidewalls, and each said channel tangentially contacting and frictionally gripping the upper half of the cylindrical intermediate portion of an inflated pontoon throughout the length of itscylindrical portion by pneumatic pressure and being detachable from said pontoon by pontoon deflation alone.
2. A catamaran as specified in claim 1 plus a pair of fixed upstanding protuberances on the upper half of each pontoon, said protuberances being integral with the flexible material of a pontoon and each positioned at an opposite end of the cylindrical intermediate portion thereof to contact the adjacent channel proximate the leading and trailing edge of said platform.
3. A catamaran as specified in claim 1 wherein the side walls of each channel are hinged to fold parallel to 'said platform and overlying the bottom wall of the channel.
4. A catamaran as specified in claim 1 wherein said platform is formed of at least two longitudinally extending sections hinged to each other at their transverse meeting edges to fold flatwise against each other and the side walls of each channel are sectionalized and hingedly connected to said sections for folding flatwise thereagainst.
References Cited in the file of this patent UNITED STATES PATENTS 659,883 Webster Oct. 16, 1900 1,523,909 Shryock Jan. 20, 1925 1,659,580 Weller Feb. 21, 1928 1,715,312 Steele May 28, 1929 1,927,124 Jones Sept. 19, 1933 2,066,101 Dunlap et al Dec. 29, 1936 2,226,911 Romano Dec. 31, 1940 2,396,148 Bean Mar. 5, 1946 2,399,494 Manson et a1. Apr. 30, 1946 2,451,781 Steele Oct. 19, 1948
US316577A 1952-10-24 1952-10-24 Catamaran Expired - Lifetime US2745118A (en)

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Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896564A (en) * 1955-03-23 1959-07-28 Kenneth E Wright Ramp for seaplane
US2910035A (en) * 1957-11-12 1959-10-27 William R Johnson Foot operated marine paddle wheel system
US2977606A (en) * 1958-04-21 1961-04-04 Straussler Nicholas Pe Sorrell Boat
US2988034A (en) * 1957-10-17 1961-06-13 James V Hunt Watercraft
US3031694A (en) * 1959-08-05 1962-05-01 Eastern Co Raft gusset
US3034155A (en) * 1959-07-29 1962-05-15 Freeland Sons Company Swimming raft
US3056147A (en) * 1959-11-24 1962-10-02 Straussler Nicholas Pe Sorrell Folding boat
US3082441A (en) * 1961-08-14 1963-03-26 Acme Hamilton Mfg Corp Collapsible buoyant device
US3083382A (en) * 1958-05-19 1963-04-02 William E Villines Water-craft
US3099977A (en) * 1957-02-21 1963-08-06 Frank W Mclarty Amphibious vehicles
US3179960A (en) * 1962-06-18 1965-04-27 Ray F Nimmo Knock-down pontoon-craft construction
US3571831A (en) * 1968-10-04 1971-03-23 Elmer W Conklin Float
US3812805A (en) * 1972-10-12 1974-05-28 Vector Co Inflatable pontoon boat
US3846858A (en) * 1972-02-18 1974-11-12 H Syfritt Assembly for use in recreational activities
US3968532A (en) * 1975-03-07 1976-07-13 Kar-Ta-Craft Corporation Knock down boat construction
US4165059A (en) * 1976-04-30 1979-08-21 American Safety Equipment Corporation Float assembly for a helicopter or the like
FR2554410A1 (en) * 1983-11-09 1985-05-10 Gardeble Jean Claude Equipment for converting sailing sport catamarans into fishing/cruising motor boats
US4535717A (en) * 1981-11-06 1985-08-20 The Boeing Company Marine surface debris deflector
US4557210A (en) * 1984-03-30 1985-12-10 Jeffrey A. Gerwin Twin hull disassemblable rowboat
US4624209A (en) * 1984-01-06 1986-11-25 Loffler Victor R Portable multi-hull watercraft kit
US4915047A (en) * 1988-08-15 1990-04-10 Kris-Jen Import Export Incorporated Knock down catamaran with inflatable pontoons
US4919632A (en) * 1989-01-17 1990-04-24 Smith Richard L Collapsible one-man pontoon fishing raft
US5385497A (en) * 1993-01-22 1995-01-31 Chu; Jack S. Water exerciser
US5505153A (en) * 1994-04-07 1996-04-09 S. E. Ventures, Inc. Vehicle-transportable twin-hulled boats
US6582264B2 (en) * 2001-10-05 2003-06-24 Aqua Sports Technology, Inc. Portable, multi-use water device
US20040250743A1 (en) * 2003-06-10 2004-12-16 Rettey Corporation Pontoon frame and adjustable motor mount
WO2008148907A2 (en) 2007-06-04 2008-12-11 Nieto Leon Jose Small foldable single-seater acquatic pedal-boat, transformable into trolley for transport thereof

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US659883A (en) * 1900-04-30 1900-10-16 Dean S Webster Life-saving apparatus.
US1523909A (en) * 1924-02-11 1925-01-20 Shryock Tommy Engine mounting
US1659580A (en) * 1927-10-22 1928-02-21 Weller Frank Mounting for outboard motors
US1715312A (en) * 1929-05-28 Folding collapsible boat
US1927124A (en) * 1932-06-20 1933-09-19 Harry B Jones Float
US2066101A (en) * 1935-08-01 1936-12-29 Solon T Dunlap Marine craft
US2226911A (en) * 1938-06-22 1940-12-31 Romano Joseph Tilting raft
US2396148A (en) * 1943-11-09 1946-03-05 Harry J Bean Lifesaving and sporting raft
US2399494A (en) * 1943-06-07 1946-04-30 Frank G Manson Life raft
US2451781A (en) * 1945-06-25 1948-10-19 Doty M Steele Power-driven surfboard

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1715312A (en) * 1929-05-28 Folding collapsible boat
US659883A (en) * 1900-04-30 1900-10-16 Dean S Webster Life-saving apparatus.
US1523909A (en) * 1924-02-11 1925-01-20 Shryock Tommy Engine mounting
US1659580A (en) * 1927-10-22 1928-02-21 Weller Frank Mounting for outboard motors
US1927124A (en) * 1932-06-20 1933-09-19 Harry B Jones Float
US2066101A (en) * 1935-08-01 1936-12-29 Solon T Dunlap Marine craft
US2226911A (en) * 1938-06-22 1940-12-31 Romano Joseph Tilting raft
US2399494A (en) * 1943-06-07 1946-04-30 Frank G Manson Life raft
US2396148A (en) * 1943-11-09 1946-03-05 Harry J Bean Lifesaving and sporting raft
US2451781A (en) * 1945-06-25 1948-10-19 Doty M Steele Power-driven surfboard

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896564A (en) * 1955-03-23 1959-07-28 Kenneth E Wright Ramp for seaplane
US3099977A (en) * 1957-02-21 1963-08-06 Frank W Mclarty Amphibious vehicles
US2988034A (en) * 1957-10-17 1961-06-13 James V Hunt Watercraft
US2910035A (en) * 1957-11-12 1959-10-27 William R Johnson Foot operated marine paddle wheel system
US2977606A (en) * 1958-04-21 1961-04-04 Straussler Nicholas Pe Sorrell Boat
US3083382A (en) * 1958-05-19 1963-04-02 William E Villines Water-craft
US3034155A (en) * 1959-07-29 1962-05-15 Freeland Sons Company Swimming raft
US3031694A (en) * 1959-08-05 1962-05-01 Eastern Co Raft gusset
US3056147A (en) * 1959-11-24 1962-10-02 Straussler Nicholas Pe Sorrell Folding boat
US3082441A (en) * 1961-08-14 1963-03-26 Acme Hamilton Mfg Corp Collapsible buoyant device
US3179960A (en) * 1962-06-18 1965-04-27 Ray F Nimmo Knock-down pontoon-craft construction
US3571831A (en) * 1968-10-04 1971-03-23 Elmer W Conklin Float
US3846858A (en) * 1972-02-18 1974-11-12 H Syfritt Assembly for use in recreational activities
US3812805A (en) * 1972-10-12 1974-05-28 Vector Co Inflatable pontoon boat
US3968532A (en) * 1975-03-07 1976-07-13 Kar-Ta-Craft Corporation Knock down boat construction
US4165059A (en) * 1976-04-30 1979-08-21 American Safety Equipment Corporation Float assembly for a helicopter or the like
US4535717A (en) * 1981-11-06 1985-08-20 The Boeing Company Marine surface debris deflector
FR2554410A1 (en) * 1983-11-09 1985-05-10 Gardeble Jean Claude Equipment for converting sailing sport catamarans into fishing/cruising motor boats
US4624209A (en) * 1984-01-06 1986-11-25 Loffler Victor R Portable multi-hull watercraft kit
US4557210A (en) * 1984-03-30 1985-12-10 Jeffrey A. Gerwin Twin hull disassemblable rowboat
US4915047A (en) * 1988-08-15 1990-04-10 Kris-Jen Import Export Incorporated Knock down catamaran with inflatable pontoons
US4919632A (en) * 1989-01-17 1990-04-24 Smith Richard L Collapsible one-man pontoon fishing raft
US5385497A (en) * 1993-01-22 1995-01-31 Chu; Jack S. Water exerciser
US5505153A (en) * 1994-04-07 1996-04-09 S. E. Ventures, Inc. Vehicle-transportable twin-hulled boats
US6582264B2 (en) * 2001-10-05 2003-06-24 Aqua Sports Technology, Inc. Portable, multi-use water device
US20040250743A1 (en) * 2003-06-10 2004-12-16 Rettey Corporation Pontoon frame and adjustable motor mount
US7004092B2 (en) * 2003-06-10 2006-02-28 Rettey Corporation Pontoon frame and adjustable motor mount
US20060130725A1 (en) * 2003-06-10 2006-06-22 Rettey Corporation Pontoon frame and adjustable motor mount
US7263940B2 (en) * 2003-06-10 2007-09-04 Lloyd Yetter Pontoon frame and adjustable motor mount
WO2008148907A2 (en) 2007-06-04 2008-12-11 Nieto Leon Jose Small foldable single-seater acquatic pedal-boat, transformable into trolley for transport thereof
WO2008148907A3 (en) * 2007-06-04 2009-05-14 Leon Jose Nieto Small foldable single-seater acquatic pedal-boat, transformable into trolley for transport thereof

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