Abstract:
Emergency gas shut-off tool; comprising a three-dimensional shank, having an upper end terminating in a butt and an inverted U-shaped three-dimensional head mounted rotatably to the shank adjacent the butt so as to form a closed space therewith.

Description:
BACKGROUND OF THE INVENTION 
     (1) Field of the Invention 
     My invention refers to a manual tool, especially adapted to quickly grip and turn off the main gas valve, which controls the supply of gas to single homes, apartment buildings, etc. 
     The tool is of particular importance to areas which are known to experience earthquakes or movements of earth, such as e.g., the State of California. 
     (2) Prior Art 
     The following U.S. patents are listed as being of general interest with respect to my invention: 
     
         ______________________________________No:       66,550     DUNLAP     1867   1,060,494    REYNOLDS   1913   1,811,137    KRESS      1930   2,978,938    NALLEY     1961     120,304    McBRIDE    1871     941,707    GAINES     1909   1,840,685    WITHERUP   1929   2,669,147    KOENIG     1953______________________________________ 
    
     DUNLAP discloses a wrench with a pivotal die B. 
     REYNOLDS, KRESS and NALLEY show tools with pivoting jaw members. 
     McBRIDE, GAINES, WITHERUP and KOENIG are cited as being of interest with respect to the construction of handle members of various tools. 
     None of the above cited patents discloses an inverted U-shaped head, rotatably supported by a &#34;straight&#34; handle. 
     SUMMARY OF THE INVENTION 
     In addition to what was stated under Background of the invention above, the tool, according to the invention is, particularly suited for emergency or life threatening situations when the possibility of a gas explosion is imminent, such as when an earthquake occurs, a fire breaks out, etc. Under such circumstances, quick action is of utmost importance. 
     The tool is so dimensioned, that it will virtually fit all conventional gas valves, whether located in private homes, apartment buildings, factories, etc. A typical example of such a valve is shown schematiccaly in FIG. 2a. 
     Furthermore, the tool may be applied to variable sizes of gas valves, without adjustment as, generally is necessary when using a conventional wrench. 
     The tool, according to the invention is designed for leverage, so that the user can cause the head of the tool to turn by a 180 degree rotation with little effort, in order to position same for turning off the gas valve. 
     By virtue of its pivoting head, its bent handle and bevelled top edges, the tool may be handled by an inexperienced or elderly person, who may be able to get to the valve, even when it is rather inaccessible because of pipes extending adjacent to the valve etc., turn off the valve and release the head of the tool from the latter. 
     It is, thus an object of the invention to provide a life saving tool adaptable to quickly gripping and turning off a gas valve. 
     It is a further object to provide such a tool, which may be handled with little effort by almost anyone. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of the tool for turning off a gas valve according to the invention. 
     FIG. 2 is an elevational side view of the tool. 
     FIG. 2a is a perspective view of a gas cock. 
     FIG. 3 shows a frangmentary front elevational view of the tool in conjunction with a cover for its head. 
    
    
     DESCRIPTION OF THE INVENTION 
     In the drawings like reference characters designate similar parts in the several views of the drawings. 
     In FIG. 1, numeral 10 indicates the tool in its entirety. Handle 12 of tool 10 is partially straight, and preferably of three-dimensional rectangular configuration; its free end 12a is pointed and apertured at 18. The other end portion 12b of handle 12 extends angularly relative to the straight portion thereof. The top of end portion 12b terminates in a square butt 12c. The head 14 of the tool is constituted as an inverted U of three-dimensional rectangular shape, i.e., having a shoulder 14a and two arms 14b, of substantially the same width and depth as handle 12. Head 14 is mounted, as illustrated in FIG. 1, rotatably at the free ends of its arms 14b, to and abutting opposite sides of handle portion 12b by way of pivoting means, e.g., bolt/nut connection 16a and 16b. The free edges of butt 12c are bevelled at 12d, in order to facilitate the engagement of tool head 14 with and release from a gas valve or cock (FIG. 2a). The pointed end 12a is intended for use as a pry to pry open locked doors, jammed locks, windows, etc. 
     Gas shut-off valves, in general, whether of the industrial or residential type, are rectangularly shaped; the largest dimensions of these valves are somewhat smaller than the internal rectangular space between the arms 14b of head 14 and butt 12c of the tool. 
     The preferred dimensions of the space within head 14 are 2-2/6&#34;×5/8&#34; and would, therefore fit over any known gas valves, which, for homes ranges from 3/4&#34;×1/4&#34;, 7/8&#34;×1/2&#34; to 11/4&#34;×1/2&#34;, for industrial buildings from 1/2&#34;×5/8&#34;, 13/4&#34;×5/8&#34; to 2×5/7&#34;. 
     As noted above the head of the tool, according to the invention, needs no adjustment, because it will universally fit existing types of valves. 
     Furthermore, the tool head 14 is turnable from one side of shank 12 onto the opposite side thereof i.e. by at least 180° and shank 12 is angled, these features in combination will greatly facilitate securing easy access to a valve located within a narrow space, e.g., between crossing pipes, adjacent to a wall, etc. 
     In so manipulating tool 10, and causing it to engage with a valve to be turned off (FIG. 2a) the purpose of the tool is accomplished. 
     Even hard to turn, e.g., rusty valves would pose no problems, when using proper leverage manually and/or with a foot. 
     As it appears from the drawings, head 14 of tool 10 is not held between a bulky bifurcated shank, thus possibly preventing the user from gaining access to a valve within a narrow space, but--to the contrary--shank 12 is mounted movable between the ends of head 14. 
     The overall preferred dimensions of tool 10 are as follows: 
     Total length of shank 12: 12&#34; 
     Width of arms 14b of head 14: 5/16&#34; 
     Depth of head 14: 158 &#34; 
     Height of head 14: 31/8&#34; 
     Length of head 14: 13/4&#34; 
     The width and depth of shank 12 is substantially similar to those of head 14. 
     FIG. 3 illustrates tool 10 ready to be hung e.g., on a kitchen wall, partially covered by a rather flat bag 20; the latter is preferably of rectangular shape, having an upper narrow opening 20a at its top, and a wide opening 20b at its bottom. As indicated in FIG. 3, bag 20 is dropped over tool shank 12 and will come to rest on the shoulder of head 14 (as shown by dotted lines). The front panel of bag 20 is intended to provide space for general outline of a house map, which then may be supplemented by specific information on where the gas valve is located. Such information could be invaluable, especially for strangers or elderly persons, when minutes count before a possible explosion may occur. 
     The cover bag 20 could be made of paper or plastic material, the latter is preferable if the tool is hung outside a house as protection against rain, etc. 
     While the foregoing has illustrated and described what is now contemplated to be the best mode of carrying out the invention, the description is, of course, subject to modifications without departing from the spirit and scope of the invention. Therefore, it is not desired to restrict the invention to the particular construction illustrated and described, but to cover all modifications that may fall within the scope of the appended claims.