IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0387470
(2003-03-14)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
4 |
초록
▼
A shaped hull with a fixed angle keel with respect to the hull that when heeled, orients the keel to an angle of attack substantially related to the heel angle. The angle of attack being sufficient to create on the keel a lateral force substantially equal and opposite to the lateral force derived fr
A shaped hull with a fixed angle keel with respect to the hull that when heeled, orients the keel to an angle of attack substantially related to the heel angle. The angle of attack being sufficient to create on the keel a lateral force substantially equal and opposite to the lateral force derived from the wind. The submerged portion of the hull, however, remains symmetrical and oriented parallel to the course sail as is its associated drag contribution vector. Thereby reducing or substantially eliminating the lateral force generated by the hull and the associated drag contribution. The movement of the shaped hull induces a lateral force on the keel without generating a lateral force and its associated drag on the hull, thus providing a sailboat with reduced drag without resorting to the prior art methods and their associated disadvantages.
대표청구항
▼
A shaped hull with a fixed angle keel with respect to the hull that when heeled, orients the keel to an angle of attack substantially related to the heel angle. The angle of attack being sufficient to create on the keel a lateral force substantially equal and opposite to the lateral force derived fr
A shaped hull with a fixed angle keel with respect to the hull that when heeled, orients the keel to an angle of attack substantially related to the heel angle. The angle of attack being sufficient to create on the keel a lateral force substantially equal and opposite to the lateral force derived from the wind. The submerged portion of the hull, however, remains symmetrical and oriented parallel to the course sail as is its associated drag contribution vector. Thereby reducing or substantially eliminating the lateral force generated by the hull and the associated drag contribution. The movement of the shaped hull induces a lateral force on the keel without generating a lateral force and its associated drag on the hull, thus providing a sailboat with reduced drag without resorting to the prior art methods and their associated disadvantages. tantially from the flat work workpiece, the cap frame sash being of a configuration other than a tubular frame such that both the flat work workpiece and the head wear workpiece are interchangeably mountable to the same quick-release features of the first sash through their respective sashes. 8. The automatic embroidery machine of claim 7, wherein the quick-release features that engage and retain the tubular frame and the cap frame sash do not utilize threaded fasteners. 9. The automatic embroidery machine of claim 7, wherein the first sash has a plurality of arms protruding therefrom, and the quick-release features comprise spring clips, registration pins, and registration sockets, such that the arms, spring clips, and registration pins and sockets are capable of interchangeably retaining either the tubular frame or the cap Same sash. 10. The automatic embroidery machine of claim 9, wherein the cap frame sash comprises a bracket and braces extending from the bracket in a same direction as the plurality of arms of the first sash, such that the braces engage respective ones of the plurality of arms and the quick-release features of the first sash to retain the cap frame sash on the first sash. 11. The automatic embroidery machine of claim 10, wherein each of the braces has registration features that are complementary to respective ones of the registration pins and sockets. 12. A method of converting an automatic embroidery machine from one type of workpiece to another type of workpiece, the method comprising: providing the automatic embroidery machine with a computer, a head, a carriage assembly, a tubular frame supporting and retaining a flat work workpiece, and a second frame supporting and retaining a second type of workpiece that differs substantially from the flat work workpiece, the second frame having a configuration other than a tubular frame; mounting a sash to the carriage assembly, the sash having quick-release features; mounting either the tubular frame or the second frame to the sash via the quick-release features; moving the carriage assembly and, thus, said either the tubular frame or the second frame, through a range of motions relative to the head for performing embroidery operations with the head on a respective one of the workpieces in response to commands from the computer; releasing and removing said either the tubular frame or the second frame from the sash by disengaging the quick-release features; mounting the other one of the tubular frame and the second frame to the sash via the quick-release features, such that both the flat work workpiece and the second type of workpiece are interchangeably mountable to the same quick-release features of the sash through their respective frames; and then moving the carriage assembly and, thus, said other one of the tubular frame and the second frame through a range of motions relative to the head for performing embroidery operations on the respective other one of the workpieces in response to commands from the computer. 13. The method of claim 12, wherein claims (c) and (f) comprise engaging and retaining a respective one of the tubular frame and the second frame with the quick-release features without utilizing threaded fasteners. 14. The method of claim 12, wherein step (a) comprises providing the quick-release features with a spring clip and a registration pin on each of the arms, and step (b) further comprises providing the sash with arms protruding therefrom, such that the arms, spring clips, and registration pins interchangeably retain either the tubular frame or the second frame in steps (c) and (f). 15. The method of claim 12, wherein step (a) comprises configuring the second frame as a cap frame sash. 16. The method of claim 12, wherein step (a) comprises configuring the second frame as a bracket with braces extending from the bracket, and steps (c) or (f) comprises engaging the braces with the quick-release features of the sash to retain the se cond frame on the sash. 17. The method of claim 16, wherein step (a) comprises configuring each of the braces with a registration feature that is complementary to a respective one of the registration pins in step (c) or (f).
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