Abstract: A filter element includes a bag ring which is snap fitted into the filter vessel sidewall and retains both the filter element and a filter basket in the desired location in the vessel until removed.

Abstract: This invention relates to a liquid filter which includes a housing and a rotatable lid for covering the opening in the filter housing. The housing incorporates the inlet port and the outlet port for the filter. The lid is secured to the housing by rotating movement in which cam followers carried by the lid engage cam members carried by the housing to cause the lid to be cammed downwardly upon the housing. As the lid is drawn down onto the housing, an annular seal carried by the lid engages the inner surface of the housing to form a seal between the lid and the housing, covering a side opening in the housing.

Abstract: A pressure vessel arrangement including a lid with shiftable lock arms and a vent combination operating simultaneously. The lock arms passing through openings in the vessel housing sidewall when the lid is in the closed position. As the lock arms are shifted into a locked position a vent shaft into the vessel housing is sealed for pressurization of the vessel. Upon opening, the vent shaft is unsealed prior to disengagement of the lock arms to vent any residual pressure is the vessel safely.

Abstract: A filter bag which is for use in a liquid filter and which includes a liquid impervious shape-retaining edge portion defining the opening into the filter bag. The edge portion includes an annular inverted V-shaped part which terminates in an annular upturned lip part. The inverted V-shaped part of the filter bag edge portion allows the bag to be placed over a protruding upwardly directed lip in the filter housing while, optionally, the upturned lip part of the bag's edge portion permits the bag to be fitted into the filter housing with the lip part being restrictively fitted between a shoulder or support and an overlying lip formed in the filter housing. Further, the upturned lip part of the filter bag can be wedged into a filter housing to secure the bag independently of the filter top.

Abstract: An insert carrying cartridge filtering element for use in converting a liquid filter from a bag-type filter where fluid entering the filter flows into a bag and is strained through the bag to a cartridge-type filter where fluid entering the filter passes through the cartridge filtering element and exits the filter.

Abstract: An improvement in the construction of liquid filters having replaceable filtering bags in which each bag is formed to snap fit into a groove formed within the upper portion of the filter housing.

Abstract: An in-line strainer for liquids including a housing having an inlet which enters the housing at its side wall and turns upwardly within the housing and is in liquid communication with an opening in an upper wall of the housing. Filtering elements are suspended from openings in the upper wall such that liquid exiting the inlet at the opening on the upper wall flows through the filtering elements and out of the housing through an outlet in the housing side wall oppositely located from the filter inlet in the housing.

Abstract: A device for removing liquid filter bags from a filter housing. The device includes retractable arms which engage the upper part of the bag and allow for easy removal by a simple pulling on the device.

Abstract: A filter for liquids including a combination displacement float and bag hold down. The filter includes a housing with a removable cap and an internal annulus upon which is supported a reticulated filter element. The float hold down carries a retainer extension and is compressed by the housing cap with the retainer extension pressed against the filter element on the housing annulus.

Abstract: In a filter for liquids including a housing which suspends multiple filtering elements and a cover. A grid is carried by the lower peripheral edge of the cover which overlies and holds the filtering elements in place when the cover is in sealing contact with the filter housing.

Abstract: A bag clamp assembly for a liquid filter wherein the clamp part of the assembly includes a cap and ring secured together by lock parts. The filter bag of the assembly is clamped between the rim and the cap to form a liquid-tight seal about the opening edge of the bag.

Abstract: A hinge assembly for a filter housing cap. The hinge assembly also serves as a hold-down for the cap. With securing devices loosened, the cap may be lifted from its closed position and remain connected to the housing.

Abstract: An improved fluid filter housing and filter bag seal wherein the filter bag includes an annular downturned lip of flexible, shape-retaining material which in part defines an opening into the bag. The housing carries an annular rim in part defining an opening into the housing. The bag lip is forced into sealing engagement with the housing rim by the housing cap to form a fluid-tight seal.

Abstract: A filter having a housing in which a filtering medium such as a rigid screen and removable bag is located. A removable, hollow closed container is located within the filter housing inside the filtering medium. A spring is compressed between the container and the top of the filter to cause the container to be pressed into contact with the filtering medium.

Abstract: A liquid filter having a housing which includes a chamber enclosed by a cap. A filter is positioned within the chamber and includes a flange which makes a hermetic seal with the housing.

Abstract: A liquid filter having a housing which includes a chamber enclosed by a cap. A reticulated basket is fitted within the housing chamber and supported by the housing. A filter bag is positioned within the reticulated basket and includes a flexible flange which engages the housing to secure the bag within the basket without the aid of the filter cap.