What is claimed is:
1. A hydrogelatinizer represented by:
5
where, A is a sugar residue and R is an alkyl group.
2. The hydrogelatinizer according to claim 1 or 2, wherein A is a sugar residue obtained by removing a hydrogen atom from any of the hydroxyl groups bonded to the six-member ring of aldopyranose.
3. The hydrogelatinizer according to claim 1 or 2, wherein said aldopyranose is glucopyranose or galactopyranose.
4. The hydrogelatinizer according to any of claims 1 to 3, wherein R a straight chain alkyl group having 6-20 carbon atoms.
5. The hydrogelatinizer according to any of claims 1 to 3, wherein R is a straight chain alkyl group having 10-20 carbon atoms.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A self-locking coupling device, comprising:
a first fitting with a hollow cylindrical body having a first end and a second end, the first fitting having an internal thread section defining a coupling portion located adjacent to the first end and an internal shoulder projecting radially inwardly defining a locking portion located adjacent the second end;
a second fitting with a hollow cylindrical body having a first end and a second end, the second fitting having an external thread section adjacent to the first end and an annular ridge projecting radially outward adjacent the second end, whereby engagement of the corresponding internal and external thread sections advances the first and second fittings together causing the internal shoulder to ride up and over the annular ridge; and
a locking sleeve mounted about the exterior of the first fitting and movable from an unlocked position to a locked position, the locking sleeve being in the unlocked position disposed about the coupling portion of the first fitting whereby the first and second fittings can engage one another to form a coupling, the locking sleeve being in the locked position disposed about the locking portion of the first fitting whereby the first and second fittings are securely coupled together and the internal shoulder is retained behind the annular ridge such that the locking sleeve, the internal shoulder and the annular ridge cooperate to prevent relative rotation and axial translation of the first fitting relative to the second fitting.
2. A self-locking coupling device as set forth in claim 1, wherein:
the first fitting is formed with a hex nut adjacent to the first end.
3. A self-locking coupling device as set forth in claim 1, wherein:
the second fitting is formed with a hex nut adjacent to the second end, the hex nut cooperating with the annular ridge to form and annular groove therebetween.
4. A self-locking coupling device as set forth in claim 1, wherein:
the first end of the first fitting is attached to a first conduit allowing the flow of fluid therethough.
5. A self-locking coupling device as set forth in claim 1, wherein:
the second end of the second fitting is attached to a first conduit allowing the flow of fluid therethrough.
6. A self-locking coupling device as set forth in claim 1, wherein:
the first end of the first fitting includes a retention ring and a ferrule, the retention ring formed about the inner wall of the first fitting and projecting radially inward, the ferrule having a free end and a captured end, the captured end formed with a retention flange, the ferrule being inserted through the retention ring whereby the free end is connected to the first conduit and the retention flange is seated against the retention ring such that the first fitting is free to rotate about the ferrule.
7. A self-locking coupling device as set forth in claim 6, wherein:
the first end of the first fitting includes an annular groove and a thrust wire, the annular groove recessed into the inner wall of the first fitting for receiving the thrust wire and cooperating therewith to form the retention ring.
8. A self-locking coupling device as set forth in claim 1, wherein:
the second end of the second fitting includes a retention ring and a ferrule, the retention ring formed about the inner wall of the second fitting and projecting radially inward, the ferrule having a free end and a captured end, the captured end formed with a retention flange, the ferrule being inserted through the retention ring whereby the free end is connected to the second conduit and the retention flange is seated against the retention ring such that the second fitting is free to rotate about the ferrule.
9. A self-locking coupling device as set forth in claim 7, wherein:
the second end of the second fitting includes an annular groove and a thrust wire, the annular groove recessed into the inner wall of the second fitting for receiving the thrust wire and cooperating therewith to form the retention ring.
10. A self-locking coupling device as set forth in claim 1, wherein:
the locking portion of first fitting includes at least one locking tang attached to the coupling portion and extending to the second end, the at least one locking tang having a radially inward projecting internal shoulder located adjacent to the second end.
11. A self-locking coupling device, comprising:
a first fitting with a hollow cylindrical body having a first end rotatably connected to a first conduit, the first fitting having a second end for receiving a second fitting attached to a second conduit, the outer wall of the first fitting having a first circumferential channel adjacent to the first end and a second circumferential channel adjacent to the second end defining therebetween a collar, the collar having at least one axial slot extending therethrough and connecting the first and second circumferential channels, the first fitting formed with a coupling portion adjacent to the first end and a locking portion adjacent to the second end wherein the coupling portion includes an internal thread section and the locking portion includes at least one locking tang attached from the coupling portion and extending to the second end, the at least one locking tang formed with an internal locking shoulder projecting radially inward at the second end;
the second fitting having a hollow cylindrical body with a first end and a second end, the second end attached a second conduit, the second fitting having an external thread section adjacent to the first end, the second fitting having an annular ridge disposed between the external thread section and the second end wherein the engagement of corresponding internal and external thread sections advances the respective fittings together and causes the at least one locking tang to bend and flex radially allowing the internal locking shoulder to ride up and over the annular ridge, the first and second fittings being securely connected once the internal locking shoulder has traveled beyond the annular ridge; and
a locking sleeve with a hollow cylindrical body having at least one radially inward projecting key, the locking sleeve mounted concentrically about the external surface of the first fitting and being movable between an unlocked position and a locked position, the locking sleeve being in the unlocked when the at least one radially inward projecting key is maintained within the first circumferential channel and the at least one locking tang is free to bend and expand radially, the locking sleeve being in the locked position when the at least one radially inward projecting key is maintained within the second circumferential channel and the at least one locking tang is encompassed by the inner diameter of the locking sleeve whereby the at least one locking tang is prevented from bending and expanding radially.
12. A self-locking coupling device as set forth in claim 11, wherein:
the first fitting is formed with a hex nut adjacent to the first end.
13. A self-locking coupling device as set forth in claim 11, wherein:
the second fitting is formed with a hex nut adjacent to the second end, the hex nut cooperating with the annular ridge to form an annular groove therebetween.
14. A self-locking coupling device as set forth in claim 11, wherein:
the first end of said first fitting includes a retention ring and a ferrule, the retention ring formed about the inner wall of said first fitting and projecting radially inward, the ferrule having an free end and a captured end, the captured end formed with a retention flange, the ferrule being inserted through the retention ring whereby the free end is connected to the first hose segment and the retention flange is seated against the retention ring such that the first fitting is free to rotate about the ferrule.
15. A self-locking coupling device as set forth in claim 14, wherein:
the first end of said first fitting includes an annular groove and a thrust wire, the annular groove recessed into an inner wall of said first fitting for receiving the thrust wire and cooperating therewith to form the retention ring.
16. A self-locking coupling device as set forth in claim 11, wherein:
the second end of the second fitting includes a retention ring and a ferrule, the retention ring formed about the inner wall of the second fitting and projecting radially inward, the ferrule having a free end and a captured end, the captured end formed with a retention flange, the ferrule being inserted through the retention ring whereby the free end is connected to the second conduit and the retention flange is seated against the retention ring such that the second fitting is free to rotate about the ferrule.
17. A self-locking coupling device as set forth in claim 16, wherein:
the second end of the second fitting includes an annular groove and a thrust wire, the annular groove recessed into the inner wall of the second fitting for receiving the thrust wire and cooperating therewith to form the retention ring.
18. A self-locking coupling device comprising:
a first fitting with a hollow cylindrical body having a first end rotatably connected to a first conduit, the first fitting having a second end for receiving a second fitting attached to a second conduit, the outer wall of the first fitting having a first circumferential channel adjacent to the first end and a second circumferential channel adjacent to the second end defining therebetween a collar, the collar having at least one axial slot extending therethrough and connecting the first and second circumferential channels, the first fitting formed with a coupling portion adjacent to the first end and a locking portion adjacent to the second end wherein the coupling portion includes an internal thread section and the locking portion includes at least one locking tang attached from the coupling portion and extending to the second end, the at least one locking tang formed with an internal locking shoulder projecting radially inward at the second end;
the second fitting having a hollow cylindrical body with a first end and a second end, the second end attached a second conduit, the second fitting having an external thread section adjacent to the first end, the second fitting having an annular ridge disposed between the external thread section and the second end wherein the engagement of corresponding internal and external thread sections advances the respective fittings together and causes the at least one locking tang to bend and flex radially allowing the internal locking shoulder to ride up and over the annular ridge, the first and second fittings being securely connected once the internal locking shoulder has traveled beyond the annular ridge;
a locking sleeve with a hollow cylindrical body having at least one radially inward projecting key, the locking sleeve mounted concentrically about the external surface of the first fitting and being movable between an unlocked position and a locked position, the locking sleeve being in the unlocked when the at least one radially inward projecting key is maintained within the first circumferential channel and the at least one locking tang is free to bend and expand radially, the locking sleeve being in the locked position when the at least one radially inward projecting key is maintained within the second circumferential channel and the at least one locking tang is encompassed by the inner diameter of the locking sleeve whereby the at least one locking tang is prevented from bending and expanding radially; and
an anti-rotation contour formed at opposing sides of the at least one axial slot and extending into the second circumferential channel whereby upon advancing the locking sleeve from the unlocked to the lock position the locking sleeve is rotated over the rotation contour to retain the at least one radially inward projecting key within the second circumferential channel.