Torque tight locking device
First Claim
1. A torque tight locking device to prevent relative rotation between first and second nuts in a face seal assembly joining separate fluid transmission lines, said locking device comprising:
- an inner member having opposed first and second ends and having a first nut cavity therebetween sized to non-rotatably receive the face seal assembly first nut, said first nut cavity having an open side sized to slidably receive said first nut;
an outer member having opposed first and second ends and having a first cavity in said first end sized to rotatably receive said inner member, said outer member having a second cavity extending from said second end to said outer member first cavity, said outer member second cavity sized to non-rotatably receive the face seal assembly second nut, said outer member second cavity having an open side to slidably receive said second nut;
at least one locking set screw extending inwardly through a threaded borehole in said outer member abutting against said inner member to non-rotatably lock said outer member and said inner member.
2 Assignments
0 Petitions
Accused Products
Abstract
A locking device for preventing relative rotation of pretorqued compression nuts used in face seal mechanical fittings includes an inner member having a cavity sized to slide onto and non-rotatably enclose the male or first nut of the fitting, an outer member having a first cavity sized to rotatably receive the inner member and a second cavity sized to slide onto and non-rotatably enclose the female or second nut of the fitting, and at least one set screw projecting inwardly through a threaded borehole in the outer member to non-rotatably engage and lock the inner member.
50 Citations
15 Claims
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1. A torque tight locking device to prevent relative rotation between first and second nuts in a face seal assembly joining separate fluid transmission lines, said locking device comprising:
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an inner member having opposed first and second ends and having a first nut cavity therebetween sized to non-rotatably receive the face seal assembly first nut, said first nut cavity having an open side sized to slidably receive said first nut; an outer member having opposed first and second ends and having a first cavity in said first end sized to rotatably receive said inner member, said outer member having a second cavity extending from said second end to said outer member first cavity, said outer member second cavity sized to non-rotatably receive the face seal assembly second nut, said outer member second cavity having an open side to slidably receive said second nut; at least one locking set screw extending inwardly through a threaded borehole in said outer member abutting against said inner member to non-rotatably lock said outer member and said inner member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. The method of preventing relative rotation between first and second nuts in a face seal assembly having an axis and a radius joining separate fluid transmission lines, the method comprising the steps of:
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(a) sliding an inner member having a cavity sized to non-rotatably receive the first assembly nut and an open slotted side sized to slidably receive the first nut radially over the first assembly nut; (b) sliding an outer member having a first cavity sized to non-rotatably receive the second assembly nut and an open slotted side sized to slidably receive the second nut radially over the second assembly nut; (c) sliding said outer member axially toward said inner member, said outer member receiving said inner member in a second cavity therein sized to rotatably receive said inner member; and (d) securing said outer member non-rotatably to said inner member.
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Specification