Designing A Toothpaste Dispensing Toothbrush by dffhrtcv3

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									Designing A Toothpaste
Dispensing Toothbrush
          David Lutz
         Mary Savalle
       Mohamed Al-Maaz
       Afnan Abdulazeez
           BE1100
        April 17, 2002
            Identifying a Need
   A new dentifrice cleaning system
          Defining The Problem
   A device that would accommodate the needs of
    a traveler; light weight, compact, ready to use,
    less components.
   A device that would act as a development tool
    for children. The device would allow children to
    apply their own toothpaste and serve as a source
    of independence.
                     Search
   Using the U.S. patent website, we found over 20
    different designs for a toothpaste dispensing
    toothbrush.
   Everything from pressurized dispensers to
    disposable dispensing toothbrushes have already
    been patented.
                   Criteria
 Same size as old toothbrush (or about size of electric
  toothbrushes)
 Easy to Refill

 Easy to Operate

 Affordable

 Good Bristle and Grip
                 Constraints
   Trying to market the new product and change
    peoples old habits
   Streamlined production line
   Cost to Produce Product
           Alternative Solutions
   Separate Toothbrush and Toothpaste tube
   One-Time, disposable toothpaste dispensing
    toothbrush
   Pressurized dispensing toothpaste system
   Rotating Handle to dispense toothpaste
   Electric toothpaste dispensing toothbrush
   Base turn design to dispense toothpaste
                     Analysis
   Here are the typical ingredients in toothpaste
    and their function:
     The fluoride content has been a key ingredient for
      many years. Fluoride reduces cavities by neutralizing
      the acid produced by the decay-causing bacteria.
     Potassium nitrate, sodium citrate and strontium
      chloride are ingredients used to block the exposed
      dentinal tubules and reduce sensitivity.
     Tartar control toothpastes contain pyrophosphates
      or zinc compounds.
•Triclosan, sanguinaria, and polyphenols are antiplaque
ingredients.
•Antigingivitis ingredients include triclosans, stannous
fluoride, and some essential oils.
•Peroxide, citroxain, titanium dioxide, and certain abrasives
give some pastes their whitening properties.
                 Analysis cont.
   The paste tube must be constructed so it has a
    low viscosity and allows the toothpaste to flow
    easily.
   The entire toothpaste dispensing system works
    on pressure. As the user moves the button up
    the track, the plate applies more pressure to the
    back forcing the toothpaste out the end and into
    the bristles.
                  Decision
Our design is going to be one that will be, what we
 think, is the easiest to operate. It is also the
 cheapest to produce and is the best overall
 design to meet our need.
Specification
                      Housing
   The outside of the
    toothbrush would be
    near in design to a
    regular electric
    toothbrush. It would be
    about the same size but
    would have a track and a
    button on its’ handle.
The Toothpaste Tube
                                The toothpaste tube is a smaller
                                 version of a normal toothpaste
         Tubing leading to       dispenser. At the end of the tube
         bristles                there is a connection piece that is
                                 inserted into the tube at the head
                                 of the brush. The connection of
                                 the two pieces is completed by
                                 inserting the tube, which has pipe
                                 like end with a smaller diameter,
                                 into the pipe connecting to the
                                 head of the toothbrush, which is
                                 larger in diameter. When the tube
  Toothpaste Bag
                                 is empty, it may be removed by
                                 pulling its pipe out of the pipe that
                                 is connected to the head.
                        The Track
   The track is used to compact
    the toothpaste tube in order
    for application to the brush.
    The track is made of plastic.
    The user must first depress
    the button before he moves
    the button up the track. This
    will prevent toothpaste from
    coming out accidentally. As
    the button is slid forward, a
    plate is moved up
    compacting the tube. When
    the tube is empty, the plate
    can be pushed downwards
    for refilling.
                             Holes
   The holes are located
    beneath the bristles on the
    head of the toothbrush.
    When the button is moved
    up the track, the toothpaste
    comes out the bottom of the
    bristles. The pressure of the
    toothpaste forces the doors
    covering the holes to open.
    The doors act as a barrier
    between the toothpaste and
    the outside elements.
           Future Improvements
   Adding a mechanism to open doors over the
    holes. These doors would regulate the flow of
    the toothpaste as well as act as a barrier from the
    cleaning solution and the outside elements.
   The entire track and slide button mechanism can
    be moved from the top of the toothbrush to the
    side, eliminating accidental movement of the
    slide.
              Communication
   With 20 other design out there already, the
    obvious question is why this has not been put
    on the market yet.
   Strong Advertising campaign needed for success
   Market especially to travelers and parents as a
    tool to help their children learn how to brush.
   Offer different outside designs to appeal to
    different audiences.
                 Resources
   http://www.delphion.com
   http://www.mgl.ca/brushnow
   http://www.mae.ucsd.edu/ames15/prev_stude
    nt_proj/spring2000/me3scs/draftdesign.html

								
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