Portable door stop

A portable door stop comprising:

• first and second elements having opposed surfaces for abutting the opposite faces of a door,
• means for variably linking said first and second elements to abut opposite faces of doors of different thicknesses and to maintain the abutting opposed surfaces of said first and second elements substantially parallel to one another, said variable linking means comprising an elongated member fixed to said first element and slideably extending through said second element such that the opposed surfaces on said first and second elements are guided for movement toward and away from one another,
• means on said second element for releasable one-way advancing of said elongated member to bring said opposed surfaces closer to one another for clamping them on the opposite faces of a door, said releasable one-way advancing means comprising a driving plate pivotally mounted to said second element and having an opening through which said elongated member extends, said opening being sized relative to said elongated member such that relative movement is permitted when said driving plate is in a position substantially normal to the longitudinal axis of said elongated member and when said driving plate is in a position not normal to the longitudinal axis of said elongated member at least one surface of said driving plate opening binds on the elongated member,
• means for displacing said driving plate from said normal position so that continued displacement of said driving plate displaces said elongated member relative to said second element in a direction to bring said opposed surfaces closer together,
• means for releasably locking said driving plate in the not-normal position whereby said door stop is releaseably secureable to the door, and
• a floor engaging leg mounted on one of said elements to prevent movement of said door.