Abstract:
This invention generally relates to a method for dispensing tape with automatic backing removal more particularly suited for tape and an associated backing, employing a frame and affixed thereto a tape supply spindle rotatably mounted for receiving a roll of tape; said tape supply spindle having thereon a friction disc for pressing against a rotating take-up spindle mounted to said frame and to receive the protective tape backing when the take-up spindle rotates upon an application of a pulling force to the tape.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
       [0001]    This is a continuation claiming the priority benefit under 35 U.S.C. 120 of U.S. patent application Ser. No. 13/098,841 entitled Tape Dispenser and Take-Up Reel for Tape Backing filed May 2, 2011 and further claims the priority benefit under 35 U.S.C. 119 (e) of U.S. Provisional Application No. 61/330,694, Tape Dispenser and Take-up Reel for Associated Tape Backing filed on May 3, 2010, the entire disclosures of which are hereby incorporated by reference. 
     
    
     FIELD OF THE INVENTION 
       [0002]    This invention relates to a method of dispensing for tape with backing requiring removal. 
       BACKGROUND OF THE INVENTION 
       [0003]    A tape dispenser is a device that holds a roll of tape and has a mechanism on one end to cut or shear-off the tape. Dispensers vary widely based on the tape they dispense. Abundant and most common, clear tape dispensers are commonly made of plastic, and may be disposable. Other dispensers are stationary and may have sophisticated features to control tape usage and improve ergonomics. Tape dispensers for silicon tapes with Mylar (Mylar® registered trademark of DuPont Teijin Films) protective backing that separates tape layers are wound on a tape spool and require more complex tape dispensing mechanisms to allow dispensing while stripping-off the backing. Without an auto mechanism the process of removing the backing material is time consuming and wasteful, since in trying to remove the backing, strips of tape can damage the useful part of the tape, especially when lifting the backing with a fingernail or pointed tool to separate the layers. Manual methods for removing backing takes time and resources that can account for a significant dollar value in any project. The manual removal method also requires the use of both hands. Thus, the user has to stop a job, put down tools, and often remove work gloves to separate the backing. Adverse weather conditions make this all the more difficult. 
       SUMMARY OF THE INVENTION 
       [0004]    This invention generally relates to a dispensing apparatus for tape with protective backing, including: a housing and affixed thereto a tape supply spindle rotatably mounted for receiving a roll of tape; said tape supply spindle having thereon a friction carrying device for applying frictional pressure to a backing or rotatable take-up spindle mounted to said frame and to receive said protective tape backing when the rotatable take-up spindle rotates upon an application of a pulling force to the supply tape. 
         [0005]    In one embodiment the frictional device is provided for, by way of example, a rubber “O” ring that when installed in a pulley affixed to the take-up spindle, passed in contact with a tension roller and installed in a pulley affixed to the tape supply spindle interengages the rotatable take-up spindle and turns the take-up spindle when the tape supply spindle turns. When the tape supply spindle is pulled by a user removing the tape from the dispenser, the “O” ring on the tape supply spindle rotates and in turn rotates the take-up spindle. In an alternate embodiment the invention includes the friction carrying device directly contacts a rotatable take-up spindle. 
         [0006]    The tape supply spindle further includes a tape spindle assembly fixedly attached to a top housing structure and to an inner housing surface. 
         [0007]    In one embodiment the dispensing apparatus further includes a cut off device having serrated teeth. The teeth are within and set below two outer limits to provide safety from cutting into a user&#39;s fingers. In another embodiment, the dispensing apparatus further includes a cut off device having a blade within a rotatable blade-holder. 
         [0008]    The invention disclose herein is also a method for dispensing a tape with a protective backing, including the steps of: inserting the roll of tape into housing having tape supply spindle for rotatably receiving said roll of tape; separating a portion of the tape from the protective backing; threading said separated portion of the tape into dispensing channel; threading portion of the separated protective backing onto rotatable take-up spindle; pulling said tape separated portion of the tape through the dispensing channel, whereby the rotatable take-up spindle having associated thereon a friction carrying device for receiving frictional pressure from tape supply spindle, winds said protective tape backing on the rotatable take-up spindle when the tape spindle rotates upon an application of the pulling force to the tape. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]      FIG. 1  ( a, b ) is a perspective view and an illustrated parts breakdown showing the relative positioning of parts for a tape dispensing mechanism in accordance with an embodiment of the invention. 
           [0010]      FIG. 2  is an illustrated parts breakdown showing the relative positioning of parts for a tape dispensing mechanism in accordance with an embodiment of the invention. 
           [0011]      FIG. 3  is a perspective view of the tape cutting mechanism in accordance with an embodiment of the invention. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0012]    The following detailed description includes the best mode of carrying out the invention and is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is determined by reference to the claims. Each part or function is assigned, even if structurally identical to another part, a unique reference number wherever that part is shown in the drawing figures. 
         [0013]    Referring to  FIG. 1   a,  the invention disclosed herein relates to compact dispensing apparatus  100  for dispensing tape  3 , as by way of example and not limitation, silicone tape with protective backing  6  such as Mylar.  FIG. 1   b  illustrates the major components of the apparatus  100 , including: a top housing,  4 , and bottom housing  5 , and affixed there-between a tape supply spindle  16  rotatably mounted for receiving a roll of tape  3 ; said tape supply spindle  16  having thereon a rotatable disc  14  for contacting and creating a friction which rotates a rotatable take-up spindle  10  mounted to the bottom housing  5 , to receive the protective tape backing  6 . A cutting mechanism  8 , having in one embodiment, serrated teeth, and in another embodiment, a blade, cuts the tape when dispensing for its intended application. 
         [0014]      FIG. 2  illustrates an embodiment of the invention in greater detail. Upon an application of a pulling force P to roll of tape  3 , such as by way of example, silicone tape, the rotatable take-up spindle  10  rotates winding the backing tape  6  into a roll. In one embodiment the device for creating the friction, mentioned above, may be a friction wheel, such as rotatable disc  14  that directly contacts rotatable spindle  10 . In another embodiment the frictional device such as a rubber “O” ring  9  interengages the disc  14  pulley recess  15 , a tension roller  7  and the spindle  10 , pulley  13 . The tension roller  7  mounts on a stud or boss  12 . 
         [0015]    The tape supply spindle  16  assembly includes a tape holder comprised of the supply spindle  16 , which has at least one compression member  18  for securing the roll of silicon tape  3  with the backing  6  to the supply spindle  16 . The tape holder assemble is captured for rotation by in through-hole  20  at the top housing  4 . The tape supply spindle  16  assembly slides into the slot  24  and the friction disc  14  is thereby situated on the under-side of the bottom of surface plate  1 . The spindle  10  slides into the slot  26  and is thereby captured in the surface plate  1 . 
         [0016]    The friction disc  14  fixedly attaches to the supply spindle  16  and has a circumference that contacts the spindle  10  and presents a frictional surface when they are engaged or when an intermediate device is employed such as a belt, band, or gears. The frictional surface may be achieved using an “O” ring. In one embodiment the disc  14  has the recess  15  forming pulley  22  into which rubber “O” ring  9  or a specially designed grommet serves to create the necessary frictional device that interengages with tension roller  7  and the spindle  10  pulley  13 . The tension roller  7  supplies a small amount of drag on the “O” ring  9 . In an alternate embodiment, the friction may be manufactured into the disc  14  as a composition of rubber or other available moldable product, where it then directly contacts the spindle  10 , which also may be manufactured into the spindle  10  as a composition of rubber or other suitable moldable product. In yet another embodiment the tape supply spindle  16  for receiving a roll of tape  3  further includes a spur gear to engage a second spur gear affixed to the take-up spindle. In this embodiment, the disc  14  takes the form of a spur gear and the spindle  10  pulley  13  is replaced by a spur gear, whereby the two gears are engaged to achieve the rotation of the spindle  10  as the tape is pulled for dispensing. 
         [0017]    In the preferred embodiment, all parts except for the “O” ring are made of plastic to provide a cost effective and sturdy dispenser. Other materials and dimensions are within the scope of the invention. 
         [0018]    Returning to  FIG. 2 , the tape dispensing apparatus  100  further includes a non limiting embodiment of a cut-off device  8  having serrated teeth  28 . The teeth are within and set below the outer frame limit  29  to provide safety from cutting into a user&#39;s fingers. As shown in  FIG. 3 , the tape dispensing apparatus  100  further includes a preferred non limiting embodiment of a cut off blade  8  (also, see  FIG. 1 ) attached to lever-action member  17  which acts between two members  19   a,    19   b,  to cut off the tape passing through the containment channel  23 . 
         [0019]    A method for dispensing a tape with a protective backing, including the steps of: inserting the roll of tape  3  into housing  4  having tape supply spindle  16  for rotatably receiving said roll of tape  3 ; separating a portion  11  of the tape  3  from the protective backing  6 ; threading said separated portion  3  of the tape into dispensing channel  23 ; threading portion of the separated protective backing  4  onto rotatable take-up spindle  10 ; pulling P said tape separated portion  11  of the tape  3  through the dispensing channel  23 , whereby the rotatable take-up spindle  10  having associated thereon a friction carrying device for receiving frictional pressure from tape supply spindle, winds said protective tape backing  6  on the rotatable take-up spindle  10  when the tape supply spindle rotates  16  upon an application of the pulling force P to the tape  3 . 
         [0020]    While the foregoing invention has been described with reference to the above embodiments, additional modifications and changes can be made without departing from the spirit of the invention. Accordingly, such modifications and changes are considered to be within the scope of the appended claims.