An assembly for receiving a fluid subjected to fluctuating pressure has a housing with at least two housing parts. A tensioning bolt connects the at least two housing parts to each other. The tensioning bolt has at least two spaced-apart threaded sections, wherein the at least two threaded sections each are screwed into a respective counter thread in the at least two housing parts. The assembly can be a suction pipe or an air filter device of an internal combustion engine.

A faceted lobular threaded component and methods for making and/or installing the same. A faceted lobular threaded component may include a head, and a shank extending along a longitudinal axis away from the head. The component may also include an external faceted lobular thread in the shank extending around the longitudinal axis. The external faceted lobular thread may include at least four facets per thread revolution, and at least four lobes per thread revolution circumferentially interspersed between the at least four facets and established by the at least four facets.

The invention relates to a method for the tamper-evident and traceable marking of an assembly of a first element and a second element, the marking method comprising steps of assembling the first element and the second element, placing a radio tag marker on a first surface of the first element, the first surface being facing a second surface of the second element, and applying a first layer of locking varnish to a third surface, the third surface comprising the first surface and the second surface, in order to cover the marker, the first layer of locking varnish, once dried, guaranteeing that the marking is tamper-evident and the radio tag marker affording tracing of the marking.

A sealant containment assembly is configured to bound at least a portion of a fastener pattern between at least two components, such as components used to form at least a portion of an aircraft. The sealant containment assembly includes at least one sealant containment member that is configured to sealingly engage peripheral portions of components. The sealant containment member(s) is configured to form a sealing chamber around at least a portion of the fastener pattern. Fluid sealant is configured to flow into the sealing chamber and cure to seal fasteners within the fastener pattern that connect the components together.

An applicator for applying a material over a fastener head, protruding from a non-horizontal surface of a part, comprises an enclosure and a daubing lever. The daubing lever passes through the wall of the enclosure and is movably coupled to the enclosure. The daubing lever comprises an actuation end, located on the outer side of the wall of the enclosure, a working end, located opposite the actuation end on the inner side of the wall of the enclosure, and an abutment portion, located at one of the actuation end, the working end, or between the actuation end and the working end. The applicator further comprises a biaser for imparting a moment on the daubing lever to bias the abutment portion of the daubing lever toward the enclosure.

A cap system for enclosing a metallic bolt fastener extending through a structure which includes a first securement mechanism positioned about a periphery of a bolt head of the metallic bolt fastener. The cap system further includes a cap member which includes a sidewall having an inner surface which defines a cavity dimensioned to receive the bolt head and defines a second securement mechanism complementary configured to engage the first securement mechanism positioned about the periphery of the bolt head. The cap system further includes an end of the sidewall of the cap member which defines an opening which provides the bolt head access into the cavity.

A fastener assembly for a gas turbine engine, and method of assembly, includes a first body having a first surface and a recess communicating through the first surface. The recess may be defined by a bottom surface and a side face spanning between the first and bottom surfaces. A shank of the assembly is generally engaged between the first body and a second body and includes opposite first and second end portions. The first end portion is located in the recess and the second end portion is engaged to the second body. A filler of the assembly is generally located in the recess to cover the first end portion. To reduce windage, the filler has an outer surface that is substantially flush with the first surface.

An assembly for receiving a fluid subjected to fluctuating pressure has a housing with at least two housing parts. A tensioning bolt connects the at least two housing parts to each other. The tensioning bolt has at least two spaced-apart threaded sections, wherein the at least two threaded sections each are screwed into a respective counter thread in the at least two housing parts. The assembly can be a suction pipe or an air filter device of an internal combustion engine.

A method of applying a material over a fastener head, protruding from a non-horizontal surface of a part, the method comprising advancing an applicator toward the non-horizontal surface, pressing a sealing rim of an enclosure against the non-horizontal surface, at least partially filling the enclosure with the material, and retracting the applicator away from the non-horizontal surface to asymmetrically distribute the material across the fastener head.

A self-sealing fixing element is disclosed having a body with a bearing surface, and a bore with an opening in the bearing surface. A curable sealant layer is carried by the bearing surface and encircles the opening in the bearing surface. The curable sealant layer is formed from a sealant material which cures when exposed to atmosphere. A barrier layer overlays the curable sealant layer and can break apart when the fixing element is installed in order to expose the sealant layer to atmosphere. The curable sealant layer has a thickness which decreases away from the bore, and the barrier layer has a thickness which increases away from the bore.