US 4,601,502 AGranted

Door stop assembly

OwnerJames R. Van Dykeinventor

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Abstract

A door stop assembly for vertical insertion in a single hole in a floor in the path of a swinging door includes a tubular housing with a top flanged housing for retaining the assembly in the floor, a tubular door check rod within the flanged housing and spring biased to extend up into the path of the door upon being triggered, and a trigger bar coaxially extending through the door check rod. The top surface of the trigger bar is normally flush with the flange so that the door check cannot be accidentally extended by merely stepping on it. When depressed below the flange surface, a steel ball, normally contained within two aligned radial holes in walls of the door check bar and housing, drops into an annular groove in the trigger bar to thus release the door check bar from its housing. When the door check bar is pushed down, the groove in the trigger bar replaces the ball in the aligned holes to relock the check bar in its housing.

Claims12

Dependent claims

A door stop assembly for installation in a floor having a floor surface over which a door may swing along an arcuate door path, said door stop assembly comprising:

an elongated tubular housing for vertically mounting in the floor, said housing having an open first end positioned proximate said floor surface, and a closed second end;
an elongated tubular door check rod longitudinally movable within said tubular housing between a retracted first position wherein a first end of said check rod is positioned proximate said floor surface and an extended second position wherein said first end is substantially above said floor surface and in the arcuate door path;
biasing means disposed within said housing for urging said tubular door check rod from said first position to said second position;
locking means coupled between said tubular housing and said tubular door check rod;
and
a trigger bar coupled to said locking means for selectively unlocking said locking means, said trigger bar having first and second ends, said trigger bar being longitudinally movable between first and second operating positions within said tubular door check rod, in said first operating position the first end of said trigger bar is positioned proximate the first end of said door check rod and said door check rod is locked in its retracted first position by said locking means, in said second operating position the first end of said trigger bar is recessed below the first end of said door check rod and said door check rod is unlocked by said trigger bar to move to its extended second position.

3 more elements

A door stop assembly for installation in a floor having a surface over which a door may swing, said door stop assembly comprising:

an elongated tubular outer housing having an open first end and a closed second end with an air passage vent therethrough, a section of the bore of said housing being threaded;
a second tubular member having a flange at its first end and closed second end with an air passage vent therethrough, said second member being slideably mounted within the bore of said outer housing and having a portion of its outer surface threaded for engagement with the threaded bore of said outer housing, said second tubular member having an elongated longitudinal slot through a portion of its wall and a radial hole through a second portion of its wall;
a tubular door check rod slideably positioned within the bore of said second tubular member, the first end of said check rod being substantially flush with the surface of said flange and being funnel shaped, the bore at the second end of said check rod being threaded, said check rod having a threaded radial hole having therein a screw member having a head portion confined within the elongated longitudinal slot in the wall of said second tubular member, said check rod having at least one radial hole for housing a spherical locking ball, said radial hole being substantially coaxial with said radial hole in the wall of said second tubular member;
a spherical locking ball positioned with the radial holes in said door check rod and said second tubular member for preventing relative longitudinal movement between said tubular member and said check rod;
a trigger rod slideably positioned within the bore of said tubular door check rod, the first end of said trigger rod being positioned proximate to the surface of said flange and the top surface of said funnel shaped first end of said door check rod, the second end of said trigger rod being cup shaped, said trigger rod having an annular groove at a location slightly above the location of said spherical locking ball whereby depressing said trigger rod will permit said locking ball to be disengaged from said second tubular member;
a cup member engaging the threaded bore at the second end of said check rod;
a first spring between the closed second end of said second tubular member and said cup member on said door check rod for urging said door check rod from said second tubular member upon the disengagement of said locking ball from said second tubular member, the longitudinal movement of said door check rod being limited by said screw member in said longitudinal slot;
and
a second spring between said cup member and the second end of said trigger rod for raising said trigger rod and disengaging said spherical locking ball from said annular groove when said door check rod is depressed to the position at which its first end is substantially flush with the surface of said flange.

6 more elements

Dependencies are inferred from the claim text.