Static structures (e.g. – buildings) – Including component designed to receive a disparate article... – On or adjacent portal frame; e.g. – window cleaners hook
Reexamination Certificate
2000-01-21
2001-05-22
Callo, Laura A. (Department: 3635)
Static structures (e.g., buildings)
Including component designed to receive a disparate article...
On or adjacent portal frame; e.g., window cleaners hook
C052S632000, C052SDIG001, C248S200100, C248S208000, C248S354100, C248S354300, C211S123000, C211S206000, C211S105300, C049S055000, C049S057000, C182S057000, C182S230000
Reexamination Certificate
active
06233877
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a portable safety anchor for installation in a door or window as a tie off for a safety line.
2. Brief Description of the Prior Art
If there is a fire in a high rise building, it may be a necessary for fire fighters to establish an escape route through a window high above the ground. In a training module for this procedure, eye bolts attached to structural steel beams are provided as a tie off for a safety line. In a real fire, however, there are no preexisting eye bolts in which a rope or line can be attached and it is often difficult to find something that will serve as a solid tie off. It is to this need that the present invention is addressed. It will be understood, however, that the subject safety anchor is not limited to fire fighters and may be used by others or for attachment of construction equipment or the like.
BRIEF SUMMARY OF THE INVENTION
In view of the above, it is an object of the present invention to provide a portable safety anchor for use by fire fighters. It is another object to provide a portable safety anchor that can be used by others. Other objects and features of the invention will be in part apparent and in part pointed out hereinafter.
In accordance with the invention, a portable safety anchor is provided for use in an aperture in a wall, the wall having first and second sides and the aperture having a header jamb and side jambs. The anchor has a horizontal bar with first and second ends and a length longer than the distance between the side jambs. The bar has a first clamp at the first end and a second clamp at the second end. The first and second clamps are of opposite hand and movable along the bar. Each of the clamps is T-shaped with a first block forming a stem and a second block forming a cross arm. The first block has a face adapted for contact with the first side of the wall and the second block has a toe adapted for contact with the side jamb and a heel adapted to extend beyond the side jamb on the first side of the wall. The heel has an aperture through which the bar passes. A means is provided for securing the clamps on the bar with the toe of the second block of each clamp in frictional contact with the side jamb and the face of the first block in frictional contact with the first side of the wall. Another means is provided for attaching a safety line to the toe of the first or second clamp or to the toes of both clamps. The clamps serve as an attachment point for a safety line so that a force applied to the safety line on the second side of the wall is transferred to the first side of the wall by the first or second clamp or by both clamps. The portable safety anchor is preferably installed near the top or bottom of the aperture, the framing around the aperture being strongest there.
In one aspect of the invention, the means for attaching the safety line to the toe of the first or second clamp or to the toes of both clamps can be a hole in each toe. In a further aspect, a sleeve can be attached to the bar between the clamps with opposite ends of the sleeve externally threaded with threads of opposite hand and a first and second internally threaded sleeve can be threaded on the opposite ends of the externally threaded sleeve. In this instance the externally threaded sleeve and the internally threaded sleeves serve as the means for securing the clamps on the bar with the toes of the second block in frictional contact with the side jambs and the face of the first block in frictional contact with the first side of the wall.
The invention summarized above comprises the constructions hereinafter described, the scope of the invention being indicated by the subjoined claims.
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Callo Laura A.
Fishel Grace J.
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