Foot-operated door security device

A foot-operated door security device having a stop member to be mounted flush with a flat surface such as a floor for allowing the passage of a door when said door security stop member is in a retracted first position and to engage a surface of said door restricting its passage when said door security stop member is in a projected second position, said door security device comprising:

• a pivotable stop member having a door engaging surface and a principal surface;
• a housing having an opening for closely receiving said stop member;
• a barrel having a dual-sloted wall, said barrel being mounted within said housing;
• a first spring positioned within said barrel;
• a latch rod partially and closely received in said barrel and biased by said first spring;
• mating camming surfaces on said latch and said stop member;
• a pivotable catch for retaining said latch rod within said barrel in one operational mode;
• a second spring attached at one end to said pivotable catch and at the other end to said housing for biasing said catch;
• a catch release bar attached to said stop member for intermittently engaging said catch;
• opposed pins attached to said latch rod for engagement by said pivotable catch, said pins extending through the slots of said dual-slotted wall;
• an axle supporting said stop member as said stop member pivots between a retracted position and a projective position;
• a third spring for biasing said stop member in said projective position;
• a ledge contiguous with said camming surface of said stop member and forming a portion of said stop member for engaging said latch rod to restrain said stop member in said retracted position against the bias of said third spring;
• means for mounting said door security device in a substantially flat surface such that said principal surface is substantially coplanar with said flat surface when said stop member is in said retracted position,
• whereas a first pressure applied substantially perpendicular to said principal surface of said stop member when said stop member is in said retracted position causes said mating camming surfaces of said latch rod and said stop member to interact forcing said latch rod to move against the biasing force of said first spring in said barrel whereby said pin attached to said latch rod moves along said slots of said barrel to a position where said pivotable catch engages and restrains said pins thereby restraining said latch rod in said barrel such that said stop member is free to move under the biasing force of said third spring into said projective position at which time said door engaging surface of said stop member engages a surface of a door rigidly preventing the movement of said door past said door security device, whereby said movement of said stop member into said projective position causes said catch release bar to engage said catch that said pivotable catch pivots, releasing said opposed pins of said latch rod resetting said latch rod and whereby a second pressure applied substantially perpendicular to said stop member when said stop member is in said projective position moves said stop member into said retracted position causing said latch rod to engage said ledge to restrain said stop member in said retracted position against the biasing force of said third spring so that said door is free to pass over said retracted stop member.