Abstract: A cartridge having a housing removably mounted in a cleaning cassette. The housing has a first pivotal connecting member to pivotally engage a matching connecting means in the structure, and a second connecting member adapted to engage second connecting means in the structure to prevent rotation of the housing. There is a fixed pad mounting member in the housing and a second pad mounting head movably mounted on spring arm.

Abstract: A "U" shaped mounting head in which is mounted a removeable retaining device adapted to retain a cleaning pad therein. The retaining device has sidewalls that fit against side surfaces of a recess of the mounting head, and an upper and a lower oppositely extending flange on opposite side walls to engage related upper and lower surfaces of the mounting head so as to be retained securely in the recess.

Abstract: A cassette-like housing containing a cleaning ribbon which is wound on a pair of spools. The housing is placed in the video player/recorder apparatus, and the apparatus is operated so that the cleaning ribbon, located the forward part of the cassette, is pulled outwardly from the cassette-like housing into cleaning engagement with the rotating head of the apparatus and also in engagement with other components of the apparatus. At completion of the cleaning cycle, the cleaning ribbon is retracted into the cassette-like housing.

Abstract: A compact fluid handling system and multi-positionable valving arrangement for use therein wherein a plurality of fluid source means such, for example, as a plurality of fuel tanks or the like, are adapted to be interconnected with a plurality of fluid utilization means such, for example, as a plurality of diesel engines or the like, in such a manner that fluid contained in a selected one or ones of the plurality of fluid source means can be directed to all or selected ones of the plurality of fluid utilization means, and wherein excess fluid which is unused by the fluid utilization means can be returned to the particular source means from which it was supplied or, in certain instances, can be returned to fluid source means other than that from which it was supplied.