Mechanical latching device
First Claim
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1. A mechanical latching device for a threaded connection, comprising:
- a flexible projection from one side of the connection;
a rigid projection from another side of the connection;
the flexible and rigid projections positioned in such a way as to not impede a normal action of threads of the threaded connection;
the flexible and rigid projections positioned so that they must rotationally pass each other during assembly and disassembly of the threaded connection; and
a distance between an inner radius of a female side of the connection and an outer radius of a male side of the connection at a lead-in side to the rigid projection is greater than a distance between an inner radius of the female side of the connection and an outer radius of the male side of the connection on an opposite side of the rigid projection from the lead-in side.
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Abstract
A mechanism is disclosed which can be used to selectively establish the amount of resistance to un-screwing associated with common fittings, especially those with high pitch-angle threads. Such a mechanism is useful in a variety of applications, including tamper-evident mechanical assemblies, child-proof medicine bottles and fittings under substantial axial loads.
13 Citations
6 Claims
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1. A mechanical latching device for a threaded connection, comprising:
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a flexible projection from one side of the connection;
a rigid projection from another side of the connection;
the flexible and rigid projections positioned in such a way as to not impede a normal action of threads of the threaded connection;
the flexible and rigid projections positioned so that they must rotationally pass each other during assembly and disassembly of the threaded connection; and
a distance between an inner radius of a female side of the connection and an outer radius of a male side of the connection at a lead-in side to the rigid projection is greater than a distance between an inner radius of the female side of the connection and an outer radius of the male side of the connection on an opposite side of the rigid projection from the lead-in side. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification