US3229312A

US3229312A - Jet streamer for water vehicles

Info

Publication number: US3229312A
Application number: US450630A
Authority: US
Inventors: Smith Charles Frank
Original assignee: Individual
Current assignee: Individual
Priority date: 1965-04-26
Filing date: 1965-04-26
Publication date: 1966-01-18
Anticipated expiration: 1983-01-18

Description

Jan. 18, 1966 c. F. SMITH 3,229,312

JET STREAMER FOR WATER VEHICLES Filed April 26, 1965 2 Sheets-Sheet l Jan. 18, 1966 c. F. SMITH 3,229,312

JET STREAMER FOR WATER VEHICLES Filed April 26, 1965 2 Sheets-Sheet 2 INVENTOR. 1 0? 5 112? United States Patent 3,229,312 JET STREAMER FOR WATER VEHICLES Charles Frank Smith, RED. 3, Laconia, N.H. Filed Apr. 26, 1965, Ser. No. 450,639 1 (Ilaim. (Cl. 9310) My invention is directed toward attachments for water skis, boats and the like.

It is an object of my invention to provide a new and improved attachment of the character indicated which provides a backward and upward spray of water when attached to the rear of a water ski or boat.

Another object is to provide a new and improved attachment of the character indicated which can be easily attached to and removed from a water ski or boat.

Still another object is to provide a new and improved attachment of the character indicated which can be manufactured easily and inexpensively.

All of the foregoing and still further objects and ad vantages of my invention will now be explained with reference both to this specification and to the accompanying drawings wherein:

FIG. 1 is a perspective view of one form of my invention as attached to a water ski;

FIG. 2 is an enlarged detail view of the invention of FIG. 1;

FIG. 3 is a side View of the ski of FIG. 1 in use;

FIG. 4 is a top view of a modification of my invention;

FIG. 5 is a cross section through 5-5 of FIG. 2;

FIG. 6 is a cross section through 6-6 of FIG. 4;

FIG. 7 is an exploded view of a second modification of my invention;

FIG. 8 is a side view of a third modification of my invention;

FIG. 9 is a bottom view of the modification of FIG. 8;

FIG. 10 is a perspective view of the modification of FIG. 8.

Referring now to FIGS. 13 and 5, there is shown a flat thin elongated water ski 10 having an upward curved pointed front end 12 and a flat horizontal inward tapering rear end 14. Further there is shown a hollow metal member 16 open at both ends, the bottom end 18 extending horizontally and forward, the top end 20 extending upward and rearward. End 18 has slotted sides 22 arranged to receive end 14 of the ski in friction tight engagement and having a bottom opening or throat 24 extending horizontally below the flat bottom surface of the ski. When the ski is pulled forward while resting on the surface of water 26, water flows through the throat and the body of the member and is discharged from end 20 in the form of a jet spray. As can be seen from the drawings, the cross-sectional area of the discharge end 20 is larger than the cross-sectional area of the inlet 24.

Alternatively as shown in FIGS. 4 and 6, sides 22 can have horizontally extending flaps 30 having holes through which screws or nails 32 can extend upward and into the bottom surface of the ski to form a permanent attachment.

As a further alternative, end 18 and flaps 30 can have lip portions 32 arranged to slide into upper and lower transverse grooves 34 in the water ski.

Finally as shown in FIGS. 810, member 16 can be so shaped as to act both as a tail fin and as a jet spray producer. To this end, the main body of the member is provided with a peripheral horizontal lip 50 having holes 52 and hearing against the bottom surface of the ski adjacent the rear end, member 16 being secured thereto by screws 54 extending upward through holes 52 into the bottom surface of the ski.

The bottom end 56 of the member slopes downward and away from the ski and is provided with a hinged door 58 which opens downward and away from the ski and can be held in open position by clip 60 as well as held in a closed position by clip 62. The top end 64 of the member is always open and extends upward and away from the ski. When door 58 is closed, the device acts only as a tail fin; when door 58 is opened, a jet spray is produced as previously described while the device still functions as a tail fin.

While I have described my invention with particular reference to the drawings, my protection is to be limited only by the terms of the claim which follows.

I claim:

In combination with a water ski which is thin, elongated and extends essentially horizontally, said ski having a front end and a rear end, a jet producing hollow member open at both ends, one of said ends, extending essentially horizontally and adapted for engagement with the rear end of the ski in such manner as to form an inlet throat therebelow, the other end referred to as the discharge end extending upward and rearward behind the rear end of the ski whereby when the ski is dragged forward in water, water passes through said throat and is discharged from the other end in the form of a jet spray, said inlet throat having a cross-sectional inlet area which is less than the cross-sectional area of the discharge end, and wherein said one member end is provided with an upper lip and side bottom lips adapted for respective engagement with upper and lower transverse grooves in the top and bottom surfaces of said ski.

References Cited by the Examiner UNITED STATES PATENTS 2,940,091 6/1960 Fifer 93l0 3,040,345 6/1962 Green et al 9-310 3,089,157 5/1963 May 9310 MILTON BUCHLER, Primary Examiner.

A, E. CORRIGAN, Assistant Examiner.