INJECTABLE NUT CAP
First Claim
1. A cap for forming a sealed cavity around one end of a fastener, the cap comprising:
- an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener;
an outer cap member having an annular skirt or flange, the annular skirt or flange and annular base between them defining an annular sealing cavity; and
a sealing material inlet comprising an opening in the outer cap member that is in fluid communication with the annular sealing cavity, the opening being arranged to interconnect with a sealing material injection device to provide a flow of curable sealing material from the sealing material inlet into the annular sealing cavity.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention proposes a cap for forming a sealed cavity around one end of a fastener to thereby contain out-gassing and sparking events in the event of a lightning strike to the fastener. The invention also proposes a joint comprising such a cap, and a kit of parts and method for installing such a cap. A cap according to the invention comprises: an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener; and an outer cap member having an annular skirt or flange which extends radially outwardly away from the annular base, the annular skirt or flange and annular base between them defining an annular sealing cavity. The cap also comprises a sealing material inlet comprising an opening in the outer cap member that is in fluid communication with the annular sealing cavity, the opening being arranged to interconnect with a sealing material injection device to provide a flow of curable sealing material from the sealing material inlet into the annular sealing cavity.
-
Citations
26 Claims
-
1. A cap for forming a sealed cavity around one end of a fastener, the cap comprising:
-
an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener; an outer cap member having an annular skirt or flange, the annular skirt or flange and annular base between them defining an annular sealing cavity; and a sealing material inlet comprising an opening in the outer cap member that is in fluid communication with the annular sealing cavity, the opening being arranged to interconnect with a sealing material injection device to provide a flow of curable sealing material from the sealing material inlet into the annular sealing cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
-
-
22. A kit of parts for forming a sealed cavity around one end of a fastener, the kit including:
-
a cap comprising; an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener; an outer cap member having an annular skirt or flange which extends radially outwardly away from the annular base, the annular skirt or flange and annular base between them defining an annular sealing cavity; and a sealing material inlet in fluid communication with the annular sealing cavity; and a sealing material injection device having a nozzle arranged to interconnect with the sealing material inlet of the cap to direct a flow of curable sealing material into the annular sealing cavity. - View Dependent Claims (23)
-
-
24. A method of installing a cap to form a sealed cavity around one end of a fastener passing through a structure, the cap comprising:
- an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener;
an outer cap member having an annular skirt or flange which extends radially outwardly away from the annular base, the annular skirt or flange and annular base between them defining an annular sealing cavity; and
a sealing material inlet comprising an opening in the outer cap member that is in fluid communication with the annular sealing cavity, the method including;installing the cap over the one end of the fastener so that it is enclosed within the air cavity of the inner cap member and the edge of the annular base abuts the structure; injecting curable sealing material into the annular sealing cavity via the sealing material inlet so that the curable sealing material contacts the structure; and curing the curable sealing material to seal the air cavity. - View Dependent Claims (25, 26)
- an inner cap member having an annular base terminating at an edge which surrounds an opening into an air cavity for enclosing the one end of a fastener;
Specification