Abstract The disclosure relates to a filter assembly securable in a panel by driving the filter assembly into an aperture in the panel, the filter assembly automatically locking itself in the panel, yet being easily removable from the panel by means of a tool. This is accomplished by providing a ceramic filter encased within a body of non-resilient electrically conductive material having a drivable region, the body fitting within a tapered locking ring having fingers with internal diameter across the fingers smaller than the diameter of one section of the body, the fingers being driven outwardly by movement of the body thereagainst within the panel to lock the fingers on the panel. The body includes an enlarged flange portion which is utilized for driving the assembly into the panel as well as to lock the assembly in the panel in conjunction with the fingers. The assembly is removed by means of a tool returning the fingers to the pre-locking position.
A FILTER ASSEMBLY MOUNTED IN AN OPENING IN A GROUNDING PANEL, A TUBULAR CERAMIC FEED THROUGH FILTER, AN ELECTRICALLY CONDUCTIVE SLEEVE OF A RELATIVELY RIGID METAL MATERIAL SECURED ABOUT THE FILTER, A TUBULAR ELECTRICALLY CONDUCTIVE LOCKING RING HAVING AN ENLARGE FLANGE PORTION ABUTTING SAID PANEL AND BEING OF LARGER DIAMETER THAN THE OPENING AND HAVING AN INNER DIAMETER RECEIVING SAID SLEEVE AND PROVIDED WITH AXIALLY EXTENDING ANGULARLY SPACED FINGERS, THE OUTER SURFACES OF THE FINGERS NORMALLY LYING ON A CIRCLE OF A DIAMETER RECEIVABLE IN THE OPENING EXTENDING THROUGH AND BEYOND SAID PANEL, THE FINGERS BEING PROGRESSIVELY THICKER NORMALLY INWARDLY IN A DIRECTION AWAY FROM THE FLANGE SO THAT THEIR INTERIOR SURFACES LIE AGAINST AND FRICTIONALLY ENGAGE OVER SAID SLEEVE, PORTIONS OF THE FINGERS BEING FORCEFULLY DRIVEN BY SAID SLEEVE OUTWARDLY BEYOND THE PERIPHERY OF THE OPENING TO FRICTIONALLY LOCK THE SLEEVE WITHIN SAID OPENING.
Claim 2
Dependent Claim
145 words
A FILTER ASSEMBLY MOUNTED IN AN OPENING IN A GROUNDING PANEL, A TUBULAR CERAMIC FEED THROUGH FILTER, AN ELECTRICALLY CONDUCTIVE SLEEVE OF A RELATIVELY RIGID METAL MATERIAL SECURED ABOUT THE FILTER, A TUBULAR ELECTRICALLY CONDUCTIVE LOCKING RING HAVING AN ENLARGE FLANGE PORTION ABUTTING SAID PANEL AND BEING OF LARGER DIAMETER THAN THE OPENING AND HAVING AN INNER DIAMETER RECEIVING SAID SLEEVE AND PROVIDED WITH AXIALLY EXTENDING ANGULARLY SPACED FINGERS, THE OUTER SURFACES OF THE FINGERS NORMALLY LYING ON A CIRCLE OF A DIAMETER RECEIVABLE IN THE OPENING EXTENDING THROUGH AND BEYOND SAID PANEL, THE FINGERS BEING PROGRESSIVELY THICKER NORMALLY INWARDLY IN A DIRECTION AWAY FROM THE FLANGE SO THAT THEIR INTERIOR SURFACES LIE AGAINST AND FRICTIONALLY ENGAGE OVER SAID SLEEVE, PORTIONS OF THE FINGERS BEING FORCEFULLY DRIVEN BY SAID SLEEVE OUTWARDLY BEYOND THE PERIPHERY OF THE OPENING TO FRICTIONALLY LOCK THE SLEEVE WITHIN SAID OPENING.
Claim 3
Dependent Claim
24 words
A filter assembly as in claim 1 wherein the sleeve is provided with a radially enlarged outer driving portion engaged against said flange portion.
Claim 4
Dependent Claim
32 words
A filter assembly as in claim 2 wherein the outer surface of the sleeve adjacent the enlarged portion is serrated to enhance the frictional engagement with said interior surfaces of said fingers.
Claim 5
Dependent Claim
23 words
An assembly as in claim 1 wherein the sleeve is serrated to enhance the frictional engagement with said interior surfaces of said fingers.