Abstract:
The present invention provides a suction cup assembly having a magnetic tether system attached to a suction cup. The assembly includes a resilient suction cup, tether, holder and magnet. This assembly enables a suction cup to hold items on non-magnetic, smooth surfaces using a magnet.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   This invention relates to a suction cup assembly having a suction cup and holding device, and it more particularly relates to a suction cup assembly having a suction cup with a neck and a holding device which is removably attachable to the neck, the suction cup and the holding device each having one of a magnet and a magnetic metal for attaching them together to hold an article between them. The assembly can include a tether for attaching the holder to the suction cup or the magnet can be replaced with a sharp pin such as a thumbtack in which case the magnetic metal can be eliminated. 
   2. Description of the Prior Art 
   There is a need in offices, schools and homes to hold and perhaps display pieces of paper, photographs, notes and other small, flat items. Often, tapes or other adhesives can be used to attach items to surfaces. Instead of adhesives, there are fixtures which can be used to hold and display these items. For example, a smaller wire fixture such as is shown in U.S. Pat. No. 1,230,242, can be used to hold sheets of paper and similar items. One embodiment of this fixture attaches to a button or knob but the fixture could be attached to a suction cup. Another method of hanging or holding small items such as papers, notices, pictures, recipes, flyers and the like, without requiring a hole in the small item, is with magnets. Clips attached to magnets or suction cups are also available for this purpose. 
   A problem with using adhesives to attach items to various smooth surfaces is that the adhesives often damage both the item being held and the surface to which the item adheres. A problem with wire fixtures which hold papers and the like is that each paper must have a hole from which it can be hung from the fixture. A separate problem with magnets as devices to attach items to flat surfaces is that the surface must be a magnetic metal to which a magnet could adhere. Clips themselves may be the cause of damage if the strength of the grip exceeds the toughness of the surface of the article or articles held in the clips. 
   SUMMARY OF THE INVENTION 
   It is an object of the present invention to provide an assembly for holding paper and other items which combines a suction cup and a holding device, with means to detachably join the suction cup and the holding device. 
   It is another object of the present invention to provide an assembly for holding paper and other items which combines a suction cup and a holding device, one of which having a magnetic cap and the other having a magnet. 
   It is an another object of the present invention to provide an assembly which combines a suction cup with a magnet on a tether or a suction cup with a tether having a pin. 
   Another object of the present invention is to provide an assembly combining a resilient suction cup having a magnetic metal cap with a separable resilient tether having a magnet. 
   Another object of the present invention is to provide an assembly combining a resilient suction cup having a magnet for its cap with a separable resilient tether with a magnetic metal end. 
   Still another object of the present invention is to provide an assembly that can be used like a magnet on non-magnetic and non-metallic surfaces, such as glass, wood, plastic or stainless steel. 
   Still another object of the present invention is to provide an assembly that can be used like a thumbtack on non-porous surfaces, such as glass, wood, plastic or stainless steel. 
   Still another object of the present invention is to provide an assembly combining a resilient suction cup, and a tether with a holder containing either a magnet or magnetic material, or a pin, such that the assembly is inexpensive to manufacture, easy and economical to produce and assemble and attractive in appearance. 
   Yet another object of the present invention is to provide an assembly combining a suction cup and a tether with a holder containing either a magnet or a magnetic material, or a pin, such that the resulting assembly is sturdy. 
   Other objects will be apparent from the description to follow and from the appended claims. 
   The foregoing objects are achieved according to a preferred embodiment of the invention by means of a resilient suction cup having a tether attached on one end to the neck of the suction cup and having a magnet on its unattached end. The neck of the suction cup is capped with a magnetic metal cover, enabling the magnet to adhere to the suction cup and hold papers or other items placed between the magnetic metal and the magnet. In the alternative, the neck of the suction cup is capped with a magnet and the tether has a magnetic metal end, enabling the end of the tether to adhere to the suction cup and hold papers or other items placed between the magnetic metal and the magnet. The tether is preferably formed with the suction cup and is integral therewith. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a perspective view of the suction cup assembly with magnet disengaged. 
       FIG. 2  is a perspective view of the suction cup assembly with magnet engaged. 
       FIG. 3  is a top view of the suction cup assembly with magnet engaged. 
       FIG. 4  is a top view of the suction cup assembly with magnet dis-engaged. 
       FIG. 5  is a bottom view of the suction cup assembly with magnet engaged. 
       FIG. 6  is a bottom view of the suction cup assembly with magnet dis-engaged. 
       FIG. 7  is a side view of the suction cup assembly with magnet engaged. 
       FIG. 8  is a section taken along line  8 — 8  in  FIG. 4  of the suction cup assembly with magnet dis-engaged. 
       FIG. 9  is a section taken along line  9 — 9  in  FIG. 3  of the suction cup assembly with magnet engaged. 
       FIG. 10  is a perspective view of a second preferred embodiment of the suction cup assembly with tether dis-engaged. 
       FIG. 11  is a perspective view of a second preferred embodiment of the suction cup assembly with tether engaged. 
       FIG. 12  is a view through section  12 — 12  in FIG.  11 . 
   

   DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   The preferred embodiments of the invention described below comprise a suction cup assembly with magnetic tether system as shown in the drawings,  FIGS. 1-9 , comprising a suction cup  1  having a neck or nub  4  which can be covered by a magnetic cap  6  to which a magnet can adhere. The magnetic cap  6  can be made of a material, such as iron or steel, to which a magnet is attracted and will adhere. In a preferred embodiment, the neck  4  is cylindrical with an indentation  8  near the junction  11  with the suction cup  1  and the cap  6  is a magnetic metal. The cap  6  can have crimped edges  12 , enabling it to grasp the neck  4  of the suction cup in the indentation  8 . A tether  14  can be attached, either permanently fixed or detachable, at one end  10  to the suction cup  1  at the junction  11 , or preferably molded with the suction cup and integral with it. The other end  16  of the tether  14  is attached holder  18  which contains a magnet  20 . In a preferred embodiment, the magnet  20 . In a preferred embodiment, the magnet  20  is riveted with rivet  22  and rivet cap  24  into the holder  18 . The suction cup, tether and holder can each be made of a resilient material such as rubber or rubber alloy or plastic, which could be elastometric plastic, or PVC. 
   A second preferred embodiment described below comprises a suction cup assembly with a tether system as shown in the drawings,  FIGS. 10-12 , comprising a suction cup  101  having a neck or nub  104 . A tether  106  can be separably attached at one end  108  to the suction cup  101  at the junction  110 , or preferably molded with the suction cup and integral with it. The other end  112  of the tether  106  is attached to a holder  114  which contains a pin  116  protruding from the holder. The pin  116  can be engaged by or inserted into the neck  104  of the suction cup  101  or into a receiving piece (not shown), if desired. 
   In a preferred embodiment, the tether is between 2½ and 3 inches long and the cap is a circle which is 0.63 inches in diameter and 0.19 inches thick. In another preferred embodiment, the magnet is a cylinder whose diameter is 0.49 inches. In yet another preferred embodiment , the neck of the suction cup is a cylinder whose radius is 0.19 inches. However, the size can vary according to the use to which the suction cup is to have, and the area in which it is to be employed. 
   Although the cap and the magnet can be attached to the suction cup and holder as described above, they can be attached to the supporting structure in other ways as well. For example, either or both of them could be molded when the suction cup or tether are molded in an injection molding machine. In another embodiment, the sprue created during the injection molding process could serve as tether, linking the suction cup and the holder. 
   The invention can be used like a magnet on non-magnetic and non-metallic surfaces, such as glass, mirrors, wood, plastic or stainless steel. To use this invention, one suctions the suction cup onto a glass, stainless steel or other surface, places notes, pictures, flyers or other items onto the metal cap of the suction cup and then places the holder onto the items to engage the magnet and hold the items in place. The tether holds the magnet to the suction cup and prevents the magnet from becoming lost when not engaged. The invention is especially useful for hanging and displaying pictures, notes, flyers, and other items in lockers, kitchens and work areas. To use a second embodiment of this invention, one suctions the suction cup onto a surface, places notes, flyers or other items onto the neck of the suction cup and then pushes the pin contained in and protruding from the holder through the items and into the neck of the suction cup to secure the items. 
   The invention is particularly advantageous when formed of resilient materials such as plastic, rubber or rubber alloy but would apply to other materials as well. The invention could be virtually any size suction cup, tether and magnet or pin. The suction cup, tether and magnetic or non-magnetic holder can be integral, and can be molded in one molding operation; the magnet and the cap, or pin (in lieu of magnet and cap), could be inserted as well during the molding process, making the manufacturing process inexpensive, as opposed particularly to manual assembly. Variations in the foregoing description fall within the invention. 
   The invention has been described in detail with particular emphasis being placed on the preferred embodiments thereof, but variations and modifications within the spirit and scope of the invention may occur to those skilled in the art to which the invention pertains.