Mechanical door stop
AssigneeWinner International Royalty Corporation
InventorDanut Voiculescu
Life of this patent
Estimating the term…
Abstract
An improved doorstop provides increased safety along with the simplified operation over previous doorstops. The doorstop is adapted to be mounted directly to the door in close proximity to an immovable surface such as the floor or a door channel. The device includes a frictional contact member which is leveraged from a first position away from the immovable surface to a second position in frictional contact with the surface. The improved doorstop is useful on sliding doors as well as hinged doors.
Claims26
In combination with a security device adapted to be mounted on a hinged door to prevent opening thereof, said device including a housing, a planar friction surface movable into and out of frictional contact with the floor in proximity to the door, said friction surface joined to the lower end of an elongated rod, said rod extending into and through the housing, a leveraging mechanism for actuating the rod to urge the friction surface into pressure contact with the floor and for releasing the rod to return said friction surface to a position out of contact with the floor, said leveraging mechanism comprising:
- (a) a lock lever pivotally mounted about a pivot axis within said housing and including:
- (1) first biasing means for maintaining said lock lever in a normal first position about said pivot axis whereby axial movement of said rod is not impeded;
- and
- (2) means at least partially surrounding the rod for incrementally moving said friction surface toward and into contact with the floor each time said lock lever is pivotally moved from said first position to a second position;
- (b) a release mechanism including a
- (1) a release handle pivotally mounted about a pivot axis within said housing and including:
- (2) second biasing means for maintaining the release handle in a normal first position whereby axial movement of the rod in a vertical direction away from the floor is impeded;
- and
- (3) means to permit the release handle to be pivoted from said first position to a second position whereby said rod is free to move in an axial direction away from the floor;
- (c) third biasing means adapted to urge said rod in an axial direction away from the floor when said release handle is pivoted to its second position.
A doorstop device comprising:
- (a) means adapted to secure the device to the bottom of a vertical surface of a door in proximity to an immovable surface such as a floor;
- (b) a rod and a contact surface, said contact surface joined to one end of the rod, and adapted to be moved into and out of frictional contact with the immovable surface;
- (c) a leveraging mechanism including a lock lever pivotally mounted about a pivot axis for moving the rod angularly away from the vertical door surface and moving the contact surface into engagement with the immovable surface with a controllable pressure to effectively prevent movement of the door in the direction of the doorstop, said lock lever including a first biasing means for maintaining the lock lever in a normal first position which does not impede the movement of said rod, said lock lever including means to incrementally move said rod and said contact surface toward the immovable surface as the lever is pivotally moved about its pivot axis from a first position to a second position, and return means comprising a release handle and spring means, said spring means serving to bias the contact surface away from the immovable surface when the release handle is actuated.
Dependencies are inferred from the claim text.