Abstract:
A measuring device including a mechanism for measuring such as a tape measure, the mechanism for measuring having a end hook; and a mechanism for selectively securing, such as a magnet, the tape to an object, such as a pipe, the mechanism for selective securing being attached to the end hook of the mechanism for measuring.

Description:
The present application is a continuation-in-part of and claims from application Ser. No. 09/686,649, entitled MAGNETIC TIP FOR TAPE MEASURE AND METHOD OF USE, filed Oct. 10, 2000; provisional patent application No. 60/164,475, entitled MAGNETIC TIP FOR TAPE MEASURE AND METHOD OF USE, filed Nov. 10, 1999 and from patent application Ser. No. 09/541,491, entitled MAGNETIC TIP FOR TAPE MEASURE AND METHOD OF USE, filed Apr. 3, 2000. This invention relates to measuring devices, specifically to such devices with an active mechanism for attachment to the object being measured. 

   FIELD OF INVENTION 
   Background 
   People use and have used measuring devices for a very long time. Some measuring devices that are used today are tape measures and rulers. When a person is measuring a long distance (more than 12 inches) usually that person will use a tape measure. 
   Typical tape measures range from a few feet to considerably more than one hundred feet. Tape measures commonly have a tip, or end hook, at one end of the tape. The end hook is placed at one end of a board, pipe, or other object being measured. The end hook is generally ½ inch to ¾ inch long. 
   A person measuring an object will place the end hook at one end of the object. Next, the person stretches out the tape measure to the opposite end of the object. The end hook of the tape measure will slip off the first end of the object. The person replaces the end hook at the first end and again stretches out the tape measure. This may be repeated several times until the person is able to obtain an accurate measurement of the object. Alternatively, the person may use a second person with each person holding one end of the tape. What is needed is an improved end hook for securing the end of a tape to an object being measured. 
   Frequently, a person may drop objects while working on a home improvement project, working in their garage, constructing an object such as a building or other similar activities. Some of the objects that may be dropped are screws, nails, bolts, washers or other objects. Generally these objects will fall into places where people have a very difficult time reaching them such as behind a large object or into a small opening. Recovering the object often requires climbing down a ladder to pick it up and back up the ladder to do the job. What is needed is a common device that a construction worker carries that can more easily retrieve dropped objects. 
   Several inventions have been designed with a magnetic attachment. Each of these, however, are of an unsound structure that would fail Federal specifications for tape measuring devices and industry standards. For instance, many of the prior art devices show the magnet substantially exposed. Magnets are known to be brittle and easily break when dropped. Test 4.4.3.2 of the Federal standards require a drop test, whereby the tape is dropped ten times from a height of five feet onto a flat steel plate to strike edgewise against the plate. The tape is then to be examined to determine if any permanent distortion of the tape which would affect the tape has taken place. Drops of this sort crack and destroy the exposed magnets of prior inventions. 
   Other standards require the tape to be accurate to 1/32nd of an inch. Prior art magnets are of such thickness that the tape cannot be accurate. Federal standards require the tape to be extended thirty-six inches, but industry standards require the tape to be extended seven or more feet, with the tip unsupported. While extended under either standard the tape cannot bend over. Prior magnets are of size and weight that they routinely bend the tape over. Japanese standards, which American products should meet in the ever increasing world market structure, have similar tests. The aforementioned standards generally relate to Type V, classes A and B. Similar federal, trade and Japanese tests are used on other types and classes of tapes. The prior art fails to meet or provide education on how to meet the standards under the various types and classes. 
   What is needed is a tape measure with a magnetic tip that is sized and structured in a manner that allows the tapes to pass the drop tests, horizontal extension tests and other U.S. federal, trade and Japanese standards for performance. 
   SUMMARY 
   The present invention allows the person to measure a metal object once by placing the magnetic mechanism on the end hook of the tape measure at one end. The magnetic mechanism releasably attaches to the metal object, thus, securing it to one end of the object. The person then stretches out the tape measure and obtains an accurate measurement of the object. 
   The present invention further allows the user to easily pick up objects dropped into very small openings, behind large objects and otherwise difficult to reach objects. The person simply places the end hook of the tape measure onto the opening being retrieved. The magnetic mechanism will releasably attach to the dropped object. The person then retracts the tape measure and removes the dropped object from the magnetic mechanism. 
   The present invention has a unique structure, embedding the magnets in the tip of the tape measure. The magnets of high gauss may remain small and inserted into openings defined in the tip end. These may be set in place and a flattening force applied to the tip to hold the magnet in with friction force (adhesive, metal plating, coating, and/or welds may also be used if desired, but are not necessary), and making the magnet generally co-planer with the tip end of a tape measure. The magnet being shielded by the tip end and being small in size allow the tape to pass the drop test, horizontal extension test and the co-planer feature allows the tape to remain accurate. 
   In accordance with the present invention, a measuring device comprising a measuring mechanism with an end hook and a magnetic mechanism removably or permanently attached to the end hook. 

   
     DESCRIPTION OF THE FIGURES 
       FIG. 1  is a top view of the present invention; 
       FIG. 2  is a side view of the present invention; 
       FIG. 3A  is a top perspective view of the present invention; 
       FIG. 3B  is a bottom perspective view of the present invention; 
       FIG. 4A  is a perspective view of an embodiment of the present invention in a Type I tape; 
       FIG. 4B  is a side perspective view of an embodiment of the present invention in a Type I tape; 
       FIG. 5A  is a front perspective view of an embodiment of the present invention in a Type V tape; 
       FIG. 5B  is a perspective view of an embodiment of the present invention in a Type V tape; 
       FIG. 6  is a diagram showing different shapes of the magnets  30 ; 
       FIG. 7  is a perspective view of a tape measure with two pairs of offset round magnets; 
       FIG. 8  is a perspective view of a tape measure with a rectangular magnet; 
       FIG. 9  is a perspective view of a tape measure with pentagonal magnets; 
       FIG. 10  is a perspective view of a tape measure with cross-shaped magnets; 
       FIG. 11  is a perspective view of a tape measure with hexagonal-shaped magnets; 
       FIG. 12  is a perspective view of a tape measure with oval-shaped magnets indicating the magnets be oriented in a variety of directions; 
       FIG. 13  is a perspective view of a tape measure with triangular-shaped magnets; 
       FIG. 14  is a perspective view of a tape measure with octagonal magnets; 
       FIG. 15  is a perspective view of an embodiment of a tape measure with a pair of square shaped magnets having rounded corners and some round magnets disposed therebetween; 
       FIG. 16  is a perspective view of an embodiment of a tape measure with a pair of diamond-shaped magnets dispose on either side of a rectangular magnet; 
       FIG. 17  is a perspective view of a tape measure with trapezoidal magnets; 
       FIG. 18  is a perspective view of a tape measure with parallelogram-shaped magnets; and 
       FIG. 19  is a perspective view of a tape measure with square-shaped magnets in a Type V tape. 
   

   DETAILED DESCRIPTION 
   The present inventive device  10 , shown in  FIGS. 1 through 3 , includes a measuring mechanism  12  for measuring objects and a magnetic attraction mechanism  14  for providing a releasable attachment to objects. These mechanisms  12  and  14  are described below more fully. 
   The measuring mechanism  12  may be a typical tape measure or other suitable measuring device. The measuring mechanism  12  may be of a variety of lengths, widths, and shapes. The length needs to be long enough to be useful in measuring objects of a variety of sizes. The measuring mechanism  12  may include indicia using the metric system, the American system or other suitable measuring system. The length may range from shorter than six inches to longer than several hundred feet. The preferable length ranges from approximately three feet to fifty feet. The width may range from one-quarter inch to more than two inches. The preferable width ranges from approximately one-half inch to approximately one inch. The measuring mechanism  12  may be of a variety of shapes. The preferable shape is rectangular having a first end  16  and a second end  18 , a right side  20 , and a left side  22 . 
   The measuring mechanism  12  may be made of any suitable material. The material needs to avoid degradation so that the measuring mechanism  12  does not break or crack during use. The weight is not overly important, although the measuring mechanism  12  preferably is a weight that is easily portable and remains within federal, trade and Japanese standards. The federal standards as used throughout this description and the claims refers to federal specification GGG-T-106F and the Japanese standards as used throughout this description and the claims refers to Japanese Industrial Standard JIS B 7512. The measuring mechanism  12  may be made of wood, hard plastic, steel, stainless steel, nylon, aluminum, or other suitable materials. 
   The measuring mechanism  12  may include a tape end hook  24 . The tape end hook  24  may be a standard tape end hook used with typical tape measuring devices. The tape end hook  24  may vary in shape. The preferred shape is approximately rectangular. The tape end hook  24  may have an attachment end  26  and a hook end  28 . The attachment end  26  and the hook end  28  may be divided by a bend  34  in the tape end hook  24 . 
   The length, width, and material of the tape end hook  24  may vary. The length of the tape end hook  24  may range from less than one inch to more than three inches. The length preferably will be approximately one and three-fourth inches. The width of the tape end hook  24  may be approximately the same width as the measuring mechanism  12  or the width of the tape end hook  24  may be more or less than the width of the measuring mechanism  12 . Preferably, the width of the tape end hook  24  will be slightly less than the width of the measuring mechanism  12 . The tape end hook  24  may be made of hard plastic, steel, stainless steel, nylon, aluminum or any other suitable material. 
   The attachment end  26  of the tape end hook  24  may be attached near the first end  16  of the measuring mechanism  12 . The first end  16  of the measuring mechanism  12  may lay adjacent to the bend  34  in the tape end hook  24 . The attachment end  26  may be attached near the first end  16  using any suitable attachment mechanism such as pins or any other suitable attachment mechanism. 
   The tape end hook  24  may be permanently attached to the first end  16  or the tape end hook  24  may be removably attached to the first end  16 . The tape end hook  24  may be removably attached using at least one snap, a hook and loop mechanism, a button and buttonhole, or other removable attachment mechanism. The tape end hook  24  may be permanently attached to the first end  16  using permanent pins, rivets, permanent glue, or other permanent attachment mechanism. 
   The magnetic attraction mechanism  14  may include at least one magnet  30 . Preferably, the magnetic attraction mechanism  14  will include at least two magnets  30 . The magnet material may be any known material that will provide a magnetic attraction including neodymium-iron-boron, samarium cobalt, alnico, ceramic ferrite or any other magnetic material. The magnetic strength may be very slight such as 2,200 gauss to very strong such as 20,000 gauss. The preferred magnet is neodymium-iron-boron of 11,400 to 13,550 gauss, with the most preferred 13,550. The magnets  30  preferably are attached to or in magnetic communication with the hook end  28  of the tape end hook  24 . The magnets  30  may be attached using any suitable attachment mechanism. 
   The preferred embodiment has openings defined in the end hook  28  sized to receive the magnets. The magnets  30  are approximately the same thickness of the end hook  24  and the same size as the openings. The magnets  30  are situated in the holes and then pressed, friction fitting them and embedding them into the end hook  24 . Embedding the magnets  30  into the openings provides sufficient structural integrity to withstand forces encountered in standard drop tests. Welds, adhesives, metal plating (which may be magnetic), coatings or other securing methods or devices may be used, but have generally been found to be unnecessary. The magnets  30  should be generally co-planer with the surfaces of the end hook  24 , thus maintaining the accuracy of the tape. The magnets  30  which may vary in size, but preferably are between ⅛ inch and ½ inch in diameter and the thickness of the end hook  24  are found to be of a weight light enough that the invention  10  passes horizontal extension tests. 
     FIGS. 6–19  demonstrate various shapes and combinations of shapes of magnets  30  may be used with the present invention. Any shape in which magnets may be obtained may be used in the present invention as shown in  FIG. 6 . Numerous magnets  30  may be fit in a single end hook  24  as shown in  FIG. 7 . As few as one magnet  30  may be joined to an end hook  24  as show in  FIG. 8 . The shape may be oriented as a variety of angles as shown in  FIG. 12 . Different shaped magnets may be used in a single end hook as shown in  FIG. 15 . In each end hook, the sides views are much like that shown in  FIG. 2  with due adjustment for the particular shape of the magnet  30 , e.g. triangular magnets  30  will have a slightly different side profile than hexagonal magnets  30 . Generally, the magnets  30  of whatever shape are flat. The bottom view is reflective of that shown in  FIG. 3A , e.g. the shape of the magnet  30  as seen in the front view is the shape seen in the back view. 
   The invention  10  is easily used. The hook end  28  is placed adjacent to any metal object, such as metal stud framing, needing to be measured. The magnets  30  are attracted to the metal object, thus, holding the hook end  28  in place. The measuring process may then be completed. 
   The invention  10  may also be used for reaching and removing nuts, bolts, or other metal objects located in small areas where a person may be unable to reach. This may be accomplished by using the measuring mechanism  12  to place the hook end  28  with the magnets  30  into the small area containing the metal object. The magnets  30  will attract the metal object. The hook end  28  is then lifted out of the small area using the measuring mechanism  12 . 
   In an alternative embodiment, the end hook  28  may include a magnet  30  embedded in a frame  36 , which is joined via a hinge  38  to the end hook.  FIG. 4  shows a Type  1  class A or B tape measure, which may be 50′, 100′, 200′ or other length together with a hinged end hook  28 . A segment  40  may be joined to the hinge  42  of the end hook  28  and to the hinge  38  of the frame  36 . The segment  40  allows the magnet  30  to be thicker, but still should remain sufficiently thin to allow the tape to pass the applicable accuracy tests for tapes.  FIG. 5  shows a Type V tape, which has a fixed angle end hook  28 . The hinge  38  may join directly to the end hook  28  and the frame  36 . The magnet  30  is preferably embedded into the frame  36 . In this embodiment, the frame  36  and magnet  30  may be folded out of the way or down into position where they function as an end hook  28 . 
   Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize changes may be made in form and detail without departing from the spirit and scope of the invention.