Fluid filter
First Claim
1. A fluid filter comprising:
- a filter body including a fluid chamber therein having an open outer end and a seat area spaced axially therealong, a fluid inlet communicating with said chamber on one side of said seat area and a fluid outlet communicating with said chamber on the other side of said seat area;
a fluid filter element disposed in said chamber with one end thereof communicating with said seat area;
a bonnet assembly adapted to close said chamber open end, said assembly being releasably retained on said filter body and comprising a bonnet and bonnet nut operably associated with each other so as to permit rotational and axial movement therebetween;
means for continuously urging said filter element into said seat area; and
,a sealing ring disposed between said bonnet and filter body for sealing the interconnection of said bonnet assembly on said filter body in a fluid tight manner.
0 Assignments
0 Petitions
Accused Products
Abstract
A fluid filter including a filter body having inlet and outlet passages communicating with an open ended chamber on opposite sides of a tapered seat area. A cupshaped fluid filter or strainer element is located in the chamber through the open end thereof and is adapted to be closely received in the seat area. A bonnet assembly covers the open end of the chamber, is threadedly mounted to the body and is comprised of a bonnet, a bonnet nut and biasing means. The biasing means is employed to exert a biasing force against the filter or strainer element to continuously urge it toward the seat area. At least the bonnet and bonnet nut are themselves interconnected in a manner that permits both rotational and limited axial movement therebetween. The disclosed structure facilitates access to the chamber and filter or strainer element without the necessity for removing the entire fluid filter structure from a service installation. The interconnection between at least the bonnet and bonnet nut permits the bonnet assembly to be removed from the filter body as a single unit and the tapered seat area is configured such that the filter or strainer element is thereby retained in the chamber when the bonnet assembly is removed from the body for subsequent separate removal therefrom by hand.
28 Citations
25 Claims
-
1. A fluid filter comprising:
-
a filter body including a fluid chamber therein having an open outer end and a seat area spaced axially therealong, a fluid inlet communicating with said chamber on one side of said seat area and a fluid outlet communicating with said chamber on the other side of said seat area; a fluid filter element disposed in said chamber with one end thereof communicating with said seat area; a bonnet assembly adapted to close said chamber open end, said assembly being releasably retained on said filter body and comprising a bonnet and bonnet nut operably associated with each other so as to permit rotational and axial movement therebetween; means for continuously urging said filter element into said seat area; and
,a sealing ring disposed between said bonnet and filter body for sealing the interconnection of said bonnet assembly on said filter body in a fluid tight manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. In a fluid filter of the type having a body including an inlet passage and an outlet passage communicating with an open ended chamber having a filter element disposed therein with said open end being closed by a bonnet assembly releasably mounted to said body, the improvement comprising:
said bonnet assembly being comprised of a bonnet and a bonnet nut interconnected with each other so as to permit installation and removal of said assembly on said filter body as a single unit, said bonnet nut being generally cup-shaped including a top wall having an opening therethrough and being threadedly received on said filter body over said chamber open end, said bonnet being received in said generally cup-shaped bonnet nut with a portion thereof extending through said opening and retained therein such that said bonnet nut and bonnet may be axially moved between defined limits as well a rotationally moved relative to each other, said bonnet nut further including a shoulder on the inside thereof which cooperates with a shoulder on the outside surface of said bonnet to provide a driving surface between the bonnet and bonnet nut and define one limit of relative axial movement between said bonnet and bonnet nut with said bonnet portion and bonnet nut top wall including cooperating means which defines the other limit of relative axial movement. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
-
25. A fluid filter comprising:
-
a filter body including a fluid chamber therein having an open outer end and a set area spaced axially therealong, a fluid inlet communicating with said chamber on one side of said seat area and a fluid outlet communicating with said chamber on the other side of said seat area; a fluid filter element disposed in said chamber with one end thereof communicating with said seat area; a bonnet assembly adapted to close said chamber open end, said assembly being releasably retained on said filter body and comprising a bonnet and bonnet nut operably associated with each other so as to permit rotational and axial movement therebetween and installation and removal of said assembly on said filter body as a single unit, said bonnet nut being generally cup-shaped including a top wall having an opening therethrough and being threadedly received on said filter body cover over said chamber open end, said bonnet being received in said generally cup-shaped bonnet nut with a portion thereof extending through said opening and retained therein such that said bonnet nut and bonnet may be axially moved between defined limits as well as rotationally moved relative to each other, said bonnet nut further including a shoulder on the inside thereof which cooperates with a shoulder on the outside surface of said bonnet to provide a driving surface between the bonnet and bonnet nut and define one limit of relative axial movement between said bonnet and bonnet nut with said bonnet portion and bonnet nut top wall including cooperating means which defines the other limit of relative axial movement; means for continuously urging said filter element into said seat area; and
,means for sealing the interconnection of said bonnet assembly on said filter body in a fluid tight manner.
-
Specification