Leon G. Litchfield has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A window construction incorporates a pane or panes of glass retained in a frame by glazing beads inserted between the glass and the frame at the outside of the window and incorporates means for preventing disengagement of the glazing beads other than by breaking the glass. The glazing beads may incorporate oppositely acting retaining formations engageable with at least one co-operating retaining member on the frame, each retaining formation being arranged to be more firmly engaged by movement of the associated bead in a direction to disengage the other formation. In an alternative arrangement the glazing beads may incorporate retaining formations which extend beyond and are retained by the edges of the glass following completion of the glazing process.
Abstract: A drawer wall panel comprises a main panel member of extruded plastics material having an elongated recess extending longitudinally of the face of the panel member which will be outermost in use, and an elongated molded plastics insert defining a runner track located in the recess in the panel member and retained against lateral withdrawal by longitudinal lips formed at the edges of the recess in the panel member which project across the mouth of the recess into engagement with longitudinal grooves in the insert. The insert incorporates integrally formed projections extending inwardly thereof for engagement during use with components of a pre-determined type of drawer runner.
Abstract: A drawer with side walls provided with longitudinal tracks for engagement with drawer runners during use and a rear wall having a longitudinal track in which a pair of guide members are slidably located for movement between operative positions in which they extend across the rear ends of the tracks in the side walls and engage with the drawer runners and retracted positions in which they are arranged to retract clear of the rear ends of the runner tracks, there being rotary actuating means accessible from within the drawer to effect movement of said guide members between said positions, the actuating means incorporating locking means to retain the guide members against movement in their extended and retracted positions.
Abstract: A drawer assembly comprising a drawer slidably supported on a pair of drawer runners each comprising an elongated member of angle section having a mounting flange by means of which the runner may be mounted at a suitable location in a drawer cabinet or like supporting structure, and a drawer-engaging flange projecting at right angles to the mounting flange and adapted to extend into a runner recess formed in the drawer side, and means for taking up lateral clearance between the drawer and the drawer runners.
Abstract: A drawer runner comprising an elongated member of angle section having a mounting flange by means of which the runner may be mounted at a suitable location in a drawer supporting structure and a drawer-engaging flange projecting at right angles to the mounting flange and adapted to extend into a track formed in the drawer side, the drawer-engaging flange being provided with or being adapted to engage with means for slidably supporting the drawer in the supporting structure.
Abstract: A suspended filing drawer having a relatively low back and sides and a relatively high front and a file supporting assembly mounted on the low section of the drawer and connected to the rear face of the drawer front, the file supporting assembly including parallel rails for the accommodation of suspended files. The drawer may be of "knock-down" construction comprising separate side, back and front panels interconnected by connecting pieces whereby the drawer may be stored and transported in a "knocked-down" or disassembled condition and erected subsequently.
Abstract: A drawer runner comprising an elongated member having a longitudinal channel formed in the face thereof which is adjacent to the drawer in use, a stop member projecting into the channel at a position spaced inwardly from the end of the runner which is forwardmost in use and having a rearwardly directed face, the stop member being arranged to co-operate with a projection on a drawer to prevent complete withdrawal of the drawer from its cabinet or other housing, a portion of the upper surface of the runner being cut away in the region of the stop member whereby to permit upward tilting of the drawer about the front end of the runner to disengage the projection from the stop member and enable the drawer to be withdrawn from the housing.