EP0191001B1 - A device for removably connecting hollow cylindrical elements in masts for sailing transport means - Google Patents
A device for removably connecting hollow cylindrical elements in masts for sailing transport means Download PDFInfo
- Publication number
- EP0191001B1 EP0191001B1 EP86830009A EP86830009A EP0191001B1 EP 0191001 B1 EP0191001 B1 EP 0191001B1 EP 86830009 A EP86830009 A EP 86830009A EP 86830009 A EP86830009 A EP 86830009A EP 0191001 B1 EP0191001 B1 EP 0191001B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow cylindrical
- cylindrical elements
- mast
- seats
- seat
- 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
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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
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
- B63B15/0083—Masts for sailing ships or boats
Definitions
- the present invention relates to a device for removably connecting two coaxial hollow cylindrical male and female elements, respectively, which can be telescoped into each other for a predetermined length and belong to two mast sections or to a mast top and to a mast heel or to a mast cap in masts for transport means, particularly light sailing boats, such as boarders, wind-surfs and the like.
- the light boats and transport means of the above-defined kind are provided with a mast generally formed of an aluminium tube having a length of 4,40 4,60 meters, which is intended to be removably secured to the hull by means of an articulated joint and to be closed at the upper end by a "cap" which retains the sail in position.
- a mast generally formed of an aluminium tube having a length of 4,40 4,60 meters, which is intended to be removably secured to the hull by means of an articulated joint and to be closed at the upper end by a "cap” which retains the sail in position.
- this severing involves the need of providing a connecting device which can be quickly and readily locked and unlocked and assures at the same time a perfect retention of the strength characteristics of an integral mast, and this under the operative and environmental conditions in which the transport means of concern are.
- This device under the above-mentioned conditions, could be applied also in the case of the removable fastening of the mast heel to the articulated joint as well as the cap to be mast head.
- the above-mentioned connecting devices are in a position to impart to the mast a good hermetic seal not only with respect to the solid matters which can penetrate it but also, in the case of boats, with respect to the water which would unduly make heavy the mast when it is hoisted from the liquid surface to the operative position on the wind-surf.
- FR-A-2 446 401 discloses a removably connecting device according to the preamble of claim 1, particularly for mast heels of a wind-surf, comprising a female cylindrical housing forming an anchoring bush, a male ferrule intended to be introduced into said housing of the anchoring bush and a ring of a relatively flexible material, which is designed to assure a connection between the male ferrule and the female bush.
- the ferrule is provided with first and second grooves being separated from each other without a transition region by an intermediate cylindrical portion.
- This removably connecting device has the female housing provided with a cup for receiving the end of the male ferrule in order to fasten these elements to each other.
- a removably connecting device of the type comprising at least a packing means movable on the surface of one of the two substantially hollow cylindrical elements facing the other of the two substantially hollow cylindrical elements from an unlocked position in which it lies in a seat, to a locked position in which it lies in another seat, characterized in that the two seats are connected therebetween by a shaped section which causes the squeezing of the packing element during the axial insertion and extraction movements of the two portions, said shaped section between the seats including a substantially cylindrical top wall as well as side walls inclined towards said seats.
- said packing means is a so called O-ring having a toroidal shape circular in cross-section and of elastic material assuring a substantial water seal to the joint, although this joint is made by hand in a very simple manner by axial forced insertion movement of the two elements.
- This insertion movement causes a rolling movement of the packing means on itself, with displacement from the first to the second positions both defined by circumferential seats provided on one of the facing surfaces of the substantially hollow cylindrical elements to be coupled.
- the 0-ring In the second position the 0-ring is elastically deformed and locks thereby the two hollow cylindrical elements, by exerting the necessary sealing action and imparting the desired strength characteristic to the connection.
- this invention finds a particular even if not exclusive application in light sailing transport means which are movable on sand, land, ice, water or the like.
- the application that at present is considered of most interest is in masts of the light boats such as boarders, wind-surfs and the like, which masts have often a not excessive length in order to permit an easy transport and storage thereof and which, for example in the case of wind-surfs, are removably connected at one end to an articulated joint secured to the body and at the opposite end are provided with a closure element, called "cap”, which cooperates in retaining in position the sail threaded on the mast.
- cap closure element
- the mast 10 for example made of aluminium, is formed of two coaxial hollow slightly frusto-conical cylindrical elements 10a, 10b or of any other geometrical shape, which are locked to each other by an intermediate connecting device 12.
- a connecting device 12a is provided at the mast heel, between the lower end thereof and a male support 14 pivotally connected through a buffer 16 to the wind-surf body, indicated at 18.
- the upper portion 10a of mast terminates with a so called “cap” 20 inserted into the free upper end of the mast and locked thereto by means of a connecting device 12b according to the invention.
- connection device 12 comprises two male and remale coaxial hollow cylindrical portions 22 and 24 which are so dimensioned that the male portion 22 can penetrate the female portion 24 for a sufficient length to assure a desired strength of the assembly, the penetration degree being determined by an abutment 26 provided on the mast element carrying the male portion, against which the free end of the female portion 24 abuts.
- the end zone of the male hollow cylindrical portion 22 is shaped as shown in the Figures, for example by a local deformation operation of the surface, such as rolling or the like, so as to form two circumferential seats 28 and 30 being axially spaced from each other and having a different depth.
- the seat 28 is formed by a groove the bottom of which is closer to the axis 32 of the hollow cylindrical portions than the bottom of the groove forming the seat 30.
- both seats 28, 30 are connected to each other by a shaped section outwardly projecting from the bottom of the seats with respect to the axis 32.
- this shaped section as a substantially cylindrical top wall 34 and two side wall 36, 38 inclined towards the seats 28 and 30, respectively.
- the wall 36 inclined towards the seat 28 has a lower slope than that of the wall 38 inclined towards the seat 30.
- a movable packing means which is formed of a toroidal elastic element 40, circular in cross-section (0-ring) and which in the unlocked condition of the two hollow cylindrical portions 22, 24, lies within the seat 28 facing the female portion 24.
- connection is operative and the two portions 22, 24 are locked to each other and axially retained, in a sufficient manner for the application of the invention, by the friction exerted by the O-ring 40 within the seat 30, where it is squeezed, and by the ramp formed by the wall 38.
- the device can operate as well if the shaped section and the seats are provided on the female portion 24, while the male portion is provided with a smooth surface.
Abstract
Description
- The present invention relates to a device for removably connecting two coaxial hollow cylindrical male and female elements, respectively, which can be telescoped into each other for a predetermined length and belong to two mast sections or to a mast top and to a mast heel or to a mast cap in masts for transport means, particularly light sailing boats, such as boarders, wind-surfs and the like.
- The light boats and transport means of the above-defined kind, particularly the so called wind-surfs, are provided with a mast generally formed of an aluminium tube having a length of 4,40 4,60 meters, which is intended to be removably secured to the hull by means of an articulated joint and to be closed at the upper end by a "cap" which retains the sail in position. These so long masts present problems of transport either on vehicle roofs or in airplanes, as well as storage problems and it would be therefore advisable for them to be severed in at least two coaxial elements.
- However, this severing involves the need of providing a connecting device which can be quickly and readily locked and unlocked and assures at the same time a perfect retention of the strength characteristics of an integral mast, and this under the operative and environmental conditions in which the transport means of concern are. This device, under the above-mentioned conditions, could be applied also in the case of the removable fastening of the mast heel to the articulated joint as well as the cap to be mast head. Particularly in the case of multiple use it is advisable that the above-mentioned connecting devices are in a position to impart to the mast a good hermetic seal not only with respect to the solid matters which can penetrate it but also, in the case of boats, with respect to the water which would unduly make heavy the mast when it is hoisted from the liquid surface to the operative position on the wind-surf.
- FR-A-2 446 401 discloses a removably connecting device according to the preamble of claim 1, particularly for mast heels of a wind-surf, comprising a female cylindrical housing forming an anchoring bush, a male ferrule intended to be introduced into said housing of the anchoring bush and a ring of a relatively flexible material, which is designed to assure a connection between the male ferrule and the female bush. The ferrule is provided with first and second grooves being separated from each other without a transition region by an intermediate cylindrical portion. This removably connecting device has the female housing provided with a cup for receiving the end of the male ferrule in order to fasten these elements to each other.
- In accordance with the invention there is provided a removably connecting device, of the type comprising at least a packing means movable on the surface of one of the two substantially hollow cylindrical elements facing the other of the two substantially hollow cylindrical elements from an unlocked position in which it lies in a seat, to a locked position in which it lies in another seat, characterized in that the two seats are connected therebetween by a shaped section which causes the squeezing of the packing element during the axial insertion and extraction movements of the two portions, said shaped section between the seats including a substantially cylindrical top wall as well as side walls inclined towards said seats.
- In particular said packing means is a so called O-ring having a toroidal shape circular in cross-section and of elastic material assuring a substantial water seal to the joint, although this joint is made by hand in a very simple manner by axial forced insertion movement of the two elements.
- This insertion movement causes a rolling movement of the packing means on itself, with displacement from the first to the second positions both defined by circumferential seats provided on one of the facing surfaces of the substantially hollow cylindrical elements to be coupled. In the second position the 0-ring is elastically deformed and locks thereby the two hollow cylindrical elements, by exerting the necessary sealing action and imparting the desired strength characteristic to the connection.
- These and other features of the invention will be now described in connection with an embodiment thereof, illustrated in the accompanying drawings.
- Figs. 1 and 2 show in a different scale a front view partially broken away of a mast for light sailing transport means, formed according to the invention;
- Figs. 3 and 4 show a side view of the connecting device in an unlocked and locked condition of its components, respectively.
- As already said, this invention finds a particular even if not exclusive application in light sailing transport means which are movable on sand, land, ice, water or the like. In partiαuIar, the application that at present is considered of most interest is in masts of the light boats such as boarders, wind-surfs and the like, which masts have often a not excessive length in order to permit an easy transport and storage thereof and which, for example in the case of wind-surfs, are removably connected at one end to an articulated joint secured to the body and at the opposite end are provided with a closure element, called "cap", which cooperates in retaining in position the sail threaded on the mast. Both to avoid the penetration of foreign matters which can damage the mast and to prevent the penetration of water which would make the lifting operation of the mast during sailing very hard, it is advisable to provide hermetically sealed connections. In particular, the
mast 10, for example made of aluminium, is formed of two coaxial hollow slightly frusto-conicalcylindrical elements 10a, 10b or of any other geometrical shape, which are locked to each other by an intermediate connectingdevice 12. Such a connecting device 12a is provided at the mast heel, between the lower end thereof and a male support 14 pivotally connected through abuffer 16 to the wind-surf body, indicated at 18. Also the upper portion 10a of mast terminates with a so called "cap" 20 inserted into the free upper end of the mast and locked thereto by means of a connectingdevice 12b according to the invention. - The above-mentioned connecting
device 12 will be now described in more detail in the Figs. 3 and 4, wherein such device is shown applied to the removable connection between twoelements 10a and 10b of themast 10. The connection device comprises two male and remale coaxial hollowcylindrical portions male portion 22 can penetrate thefemale portion 24 for a sufficient length to assure a desired strength of the assembly, the penetration degree being determined by anabutment 26 provided on the mast element carrying the male portion, against which the free end of thefemale portion 24 abuts. - The end zone of the male hollow
cylindrical portion 22 is shaped as shown in the Figures, for example by a local deformation operation of the surface, such as rolling or the like, so as to form twocircumferential seats seat 28 is formed by a groove the bottom of which is closer to theaxis 32 of the hollow cylindrical portions than the bottom of the groove forming theseat 30. Furthermore, bothseats axis 32. - More particularly, this shaped section as a substantially cylindrical
top wall 34 and twoside wall seats wall 36 inclined towards theseat 28 has a lower slope than that of thewall 38 inclined towards theseat 30. - In these seats and therebetween a movable packing means is placed, which is formed of a toroidal
elastic element 40, circular in cross-section (0-ring) and which in the unlocked condition of the two hollowcylindrical portions seat 28 facing thefemale portion 24. By pushing thisfemale portion 24, starting from the position of Fig. 3 in the direction of the arrows X indicated in this Figure, relative to the male portion 22 a rolling movement of the O-ring 40 above the shaped section 34-38 occurs until the O-ring enters theseat 30, which movement occurs together with that of insertion of the twoportions portion 24 is against theabutment 26. In this condition, the connection is operative and the twoportions ring 40 within theseat 30, where it is squeezed, and by the ramp formed by thewall 38. - To unlock the connection it will be sufficient to exert an axial force in the direction of the arrows Y in Fig. 4 on the
portions ring 40 until it will be against into theseat 28, thereby unlocking the two mast elements. - It is to be noted that; while the
seats male portion 22, the device can operate as well if the shaped section and the seats are provided on thefemale portion 24, while the male portion is provided with a smooth surface.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86830009T ATE37510T1 (en) | 1985-01-31 | 1986-01-17 | DEVICE FOR REMOVABLE FIXING OF HOLLOW CYLINDRICAL POLE ELEMENTS FOR TRANSPORT PURPOSES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8520659U IT8520659V0 (en) | 1985-01-31 | 1985-01-31 | DEVICE FOR THE DISSOLVABLE CONNECTION BETWEEN CYLINDRICAL PARTS, IN SHAFTS FOR SAIL TRANSPORT. |
IT2065985U | 1985-01-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0191001A1 EP0191001A1 (en) | 1986-08-13 |
EP0191001B1 true EP0191001B1 (en) | 1988-09-28 |
Family
ID=11170181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86830009A Expired EP0191001B1 (en) | 1985-01-31 | 1986-01-17 | A device for removably connecting hollow cylindrical elements in masts for sailing transport means |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0191001B1 (en) |
JP (1) | JPS61132188U (en) |
AT (1) | ATE37510T1 (en) |
DE (1) | DE3660798D1 (en) |
IT (1) | IT8520659V0 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8711778U1 (en) * | 1987-08-31 | 1988-02-11 | North Sails Windsurfing Gmbh, 8122 Penzberg, De | |
GB2221735B (en) * | 1988-08-09 | 1993-02-10 | Nat Nuclear Corp Ltd | A coupling device |
FR2751936B1 (en) * | 1996-07-31 | 1998-09-04 | Houdeville Laurence | SET OF ELEMENTS FOR MAKING A GAME OF SEVERAL MATS OF DIFFERENT LENGTH AND FLEXIBILITY BOARDS COMPRISING SEVERAL JOINED PARTS |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2446401A1 (en) * | 1979-01-09 | 1980-08-08 | Losserand Paul | Anchoring housing for surf board mast foot - has uppermost cylindrical section, then narrow blunt conical section, widened cylindrical chamber and pin securing conical bowl |
FR2509250A1 (en) * | 1981-07-10 | 1983-01-14 | Morisseau Roger | REMOVABLE MAT FOR LIGHT VESSELS |
-
1985
- 1985-01-31 IT IT8520659U patent/IT8520659V0/en unknown
-
1986
- 1986-01-17 AT AT86830009T patent/ATE37510T1/en not_active IP Right Cessation
- 1986-01-17 DE DE8686830009T patent/DE3660798D1/en not_active Expired
- 1986-01-17 EP EP86830009A patent/EP0191001B1/en not_active Expired
- 1986-01-27 JP JP1986008995U patent/JPS61132188U/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
ATE37510T1 (en) | 1988-10-15 |
IT8520659V0 (en) | 1985-01-31 |
EP0191001A1 (en) | 1986-08-13 |
DE3660798D1 (en) | 1988-11-03 |
JPS61132188U (en) | 1986-08-18 |
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