POTTED CIRCUIT Russian patent published in 2017 - IPC G01M3/00 

FIELD: machine engineering.

SUBSTANCE: there is claimed a potted circuit containing a body with a bore on the end communicating with the inner body cavity, a finger located in the bore with an outer cylindrical surface and a chamfer at the end closest to the inner cavity, two radial sealing rings of elastomeric material, successively installed in first closest to the inner cavity, and the second sealing grooves of the bore, with the possibility of the finger contact on its cylindrical surface, a fluid feeding fitting located on the surface with a channel extending into the internal cavity of the bore in the area between the first and second sealing grooves, and the finger is installed with the possibility of axial movement relative to the body and its fixation in two positions: the initial one, in which the fitting channel is communicated with the internal cavity of the body, and the final one, at which the fitting channel is isolated from it, and the bore is made with a constant diameter along its entire length until it leaves the inner cavity of the body, on the farthest end of the finger, a groove is made with a width not less than the width of the sealing grooves, the ends of which are made flat and perpendicular to the cylindrical surface of the finger, while the bore end closest to the inner cavity is removed from the finger chamfer edge by a distance greater than or equal to the distance between the most distant ends of the first and second sealing grooves, and the bore diameter is D₁D-2d, where D is the outer diameter of the sealing grooves, and d is the diameter of the sealing ring section.

EFFECT: reduced size, weight and improved manufacturability.

2 dwg