METHOD AND ASSEMBLY FOR CONNECTING A COAXIAL CABLE END TO A THREADED PORT

• US 20120100751A1
• Filed: 10/26/2010
• Published: 04/26/2012
• Est. Priority Date: 10/26/2010
• Status: Active Grant

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Montena, Noah P.
• Granted Patent: US 8,172,611 B1
• Time in Patent Office: Days
• US Class Current: 439/578
• CPC Class Codes: H01R 13/622 Screw-ring or screw-casing H01R13/623 takes precedence
• CPC Class Codes: H01R 13/6397 with means for preventing unauthorised use
• CPC Class Codes: H01R 2201/18 for television
• CPC Class Codes: H01R 43/20 for assembling or disassembling contact members with insulating base, case or sleeve
• CPC Class Codes: H01R 9/0521 Connection to outer conductor by action of a nut

Abstract

An assembly for connecting a coaxial cable end to a threaded port and having a fitting to which an end of a coaxial cable can be connected. A nut, joined to the fitting, has a first set of threads and is turnable in a tightening direction around a central axis of the connecting assembly to progressively engage the first set of threads with a second set of threads on a port. The nut has an outer surface at which a first edge, facing circumferentially in a first direction, is defined. A sleeve surrounds the nut and has a body with a first reconfigurable finger extending in a circumferential direction and upon which a second edge, facing circumferentially oppositely to the first direction, is defined. The second edge is brought into bearing engagement with the first edge as the sleeve is turned in the tightening direction around the central axis so that the nut follows movement of the sleeve. The sleeve is movable continuously relative to the nut around the central axis in a loosening direction.

Claims

1. An assembly for connecting a coaxial cable end to a threaded port, the connecting assembly comprising:

a fitting to which an end of a coaxial cable can be connected;

a nut joined to the fitting and having a first set of threads, the nut turnable in a tightening direction around a central axis of the connecting assembly to progressively engage the first set of threads with a second set of threads on a port,

the nut having an outer surface at which a first edge, facing circumferentially in a first direction, is defined; and

a sleeve surrounding the nut and comprising a body with a first reconfigurable finger extending in a circumferential direction and upon which a second edge, facing circumferentially in a second direction oppositely to the first direction, is defined,

the second edge brought into bearing engagement with the first edge as the sleeve is turned in the tightening direction around the central axis so that the nut follows movement of the sleeve to secure the nut to a port,

the sleeve movable continuously relative to the nut around the central axis in a loosening direction that is opposite to the tightening direction.

2. The connecting assembly according to claim 1 wherein the first finger is movable as one piece with the sleeve body.

3. The connecting assembly according to claim 2 wherein the first finger is struck from an annular component and projects in cantilever fashion to the second edge.

4. The connecting assembly according to claim 1 wherein the nut has first and second axially spaced surface portions, the first edge defined on the first surface portion, the second surface portion having a plurality of flats arranged to be operatively engaged by a conventional wrench through relative radial movement between the wrench and nut in such a manner that spaced surfaces on the wrench simultaneously engage at least two of the flats on the nut in a manner whereby the wrench can be manipulated to turn the nut around the central axis.

5. The connecting assembly according to claim 4 wherein the sleeve has an axial extent and is configured so that the sleeve blocks radial movement of a conventional wrench into operative engagement with the nut.

6. The connecting assembly according to claim 1 wherein the first and second edges engage over a substantial axial extent so that there is positive torque transmission effected by the sleeve from the second edge to the nut through the first edge.

7. The connecting assembly according to claim 1 wherein there is at least one other edge on the nut that is circumferentially spaced from the first edge and cooperates with the second edge in a manner that is substantially the same as a manner in which the first edge cooperates with the second edge.

8. The connecting assembly according to claim 1 wherein there is at least one other reconfigurable finger on the sleeve that is circumferentially spaced from the first finger and cooperates with the first edge in a manner that is substantially the same as a manner in which the first finger cooperates with the first edge.

9. The connecting assembly according to claim 1 wherein the sleeve has an outer surface that is textured to facilitate grasping and turning of the sleeve by a hand of a user.

10. The connecting assembly according to claim 5 in combination with a tool that can be directed axially relative to the connecting assembly into keyed engagement with the nut, whereupon the tool can be manipulated to turn the nut around the central axis to release the nut from a port with which the nut is threadably engaged.

11. The connecting assembly according to claim 10 wherein the connecting assembly has axially spaced first and second ends, the fitting is at the first end of the connecting assembly, the nut is at the second end of the connecting assembly, and the tool is directed into keyed engagement with the nut by movement from an initial axial spaced position in an axial direction from the first end toward the second end.

12. The connecting assembly according to claim 10 wherein the connecting assembly has axially spaced first and second ends, the fitting is at the first end of the connecting assembly, the nut is at the second end of the connecting assembly, and the tool is directed into keyed engagement with the nut by movement from an initial axially spaced position in an axial direction from the second end toward the first end.

13. The connecting assembly according to claim 1 wherein the nut has an outer surface extent that increases in diameter in a circumferential direction progressively toward the first edge so that the first finger is progressively cammed radially outwardly by the outer surface extent as the second edge circumferentially approaches the first edge as the sleeve is moved relative to the nut in the loosening direction.

14. The connecting assembly according to claim 1 wherein the first finger has a cantilevered configuration and is reconfigured primarily by bending in a radial direction as the second edge moves circumferentially up to and past the first edge as the sleeve is moved relative to the nut in the loosening direction.

15. The connecting assembly according to claim 14 wherein the first finger has an attaching end and a curved surface that is concave opening radially inwardly substantially fully between the attaching end and second edge.

16. The connecting assembly according to claim 1 wherein the sleeve has an axial extent sufficient to surround substantially an entire axial extent of the nut and at least a majority of an axial extent of the fitting.

17. An assembly for connecting a coaxial cable end to a threaded port, the connecting assembly comprising:

fitting means for connection to an end of a coaxial cable;

a threaded nut joined to the fitting means and turnable in a tightening direction around a central axis of the connecting assembly to progressively threadably engage the nut with a port;

a sleeve surrounding the nut; and

a first edge means on the nut and a second edge means on the sleeve cooperating to;

a) be brought into bearing engagement as the sleeve is turned in the tightening direction around the central axis so that the nut follows movement of the sleeve around the central axis; and

b) allow the sleeve to be moved continuously relative to the nut around the central axis in a loosening direction that is opposite to the tightening direction.

18. The connecting assembly according to claim 17 wherein the sleeve has an axial extent and is configured so that the sleeve blocks radial movement of a conventional wrench into operative engagement with the nut.

19. The connecting assembly according to claim 18 in combination with a tool that can be directed axially relative to the connecting assembly into keyed engagement with the nut, whereupon the tool can be manipulated to turn the nut around the central axis to release the nut from a port with which the nut is threadably engaged.

20. A method of connecting a coaxial cable end to a threaded port, the method comprising the steps of:

providing a connecting assembly with a central axis and comprising a fitting, a threaded nut joined to the fitting and having a first circumferentially facing edge, and a sleeve surrounding the nut and at least a part of the fitting and defining a second circumferentially facing edge, one of the edges defined by a finger that extends circumferentially and is reconfigurable to vary a radial position of the one edge;

connecting the coaxial cable end to the fitting;

mating threads on the nut with threads on the port; and

turning the sleeve in a tightening direction around the central axis and thereby causing the edges to interact so that;

a) the second edge bears against the first edge to thereby cause the nut to follow movement of the sleeve around the central axis; and

b) the second edge can move past the first edge in the event the sleeve is turned continuously around the central axis in a loosening direction that is opposite to the tightening direction.

21. The connecting method according to claim 20 wherein the step of providing a connecting assembly comprises providing a connecting assembly with a sleeve that has an axial extent sufficient to surround substantially an entire axial extent of the nut and at least a majority of an axial extent of the fitting.

22. The connecting method according to claim 21 further comprising the steps of providing a tool and directing the tool from an initial axial spaced position in an axial direction into keyed engagement with the nut, and through manipulation of the tool effecting turning of the nut around the central axis in a loosening direction.