Samples - MDD


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Collection of designs with specific emphasis on smaller mechanical devices.

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Samples - MDD

  1. 1. product / project examples glenn klecker page 1 of 7 To further expand on some of the items outlined in my resume, I have included in this file several examples of products and project work in which I have been involved either through invention, development or major contribution. They are laid out in order to correspond with entries in my resume. . Please contact me if you have and questions or require further information regarding any of these items. . Kind Regards, Glenn Klecker 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  2. 2. product / project examples glenn klecker page 2 of 7  Invented a lock mechanism that eliminates 66% of the components in a standard folding knife. This mechanism just won a national award for innovation on June 4, 2010. o This is a typical folding knife. A typical knife handle has two handle sides (#20), a locking bar (#18), pivot pin (#38), spring (#46) and connection pins between the two handles. o My new design (below) combines all of those parts into one folded sheet metal part. You can see the flat part (bottom) before it is formed. o After being formed in a u-shaped channel, the upper portion is able to pivot to engage and disengage the knife blade lock (red ) by pushing down (blue ). o This is a picture of one of my current production knives. 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  3. 3. product / project examples glenn klecker page 3 of 7  Invented a miniature mechanism that was able to solve a fifty year old problem plaguing dentists. o The 3-Way Air/Water Syringe (right) provides air, water or a mixture of the two depending on what the dentist or assistant requires. o Since dentists began using this Syringe for dentistry, they have been unable to clear the moisture from the tip without the added step of using a separate blast of air to blow off the tip. If they do not, and the air is moist, then crowns and caps will not hold. o Due to the complexity of the design, the image below shows only a portion of what is occurring inside the mechanism. o The flow of pressurized air (orange ) is shown by the arrows coming into bottom right of the assembly. The light blue region represents atmospheric pressure air. The chamber on the lower left contains a pin (blue ) and a ball bearing used to seal off the flow of air. o When the water button (not shown) is pressed, the lever (#640) simultaneously pushes down on the blue pin (Fig 6A) which creates a seal around the pin just above the ball and then dislodges the ball which equalizes the pressure above and below the ball (Fig 6B). The ball then drops. When the user is done with the water, the water button is released. This then allows the blue pin to move back up (Fig 6C) which unseals the pin an allows full flow of the pressurized air. The full flow of air will continue around the ball until the ball reaches the top of the chamber and seals off the flow (Fig 6A). 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  4. 4. product / project examples glenn klecker page 4 of 7  Created a button style metering device which reduces by half, the finger force required by dental professionals. o In a Dental Syringe, when the user pushes on the button, pressurized fluid comes up from the bottom of the button hole and is supplied to the tip. A tire valve on a car wheel works in this way. To release the air from a tire, you push on the stem until you over come the pressure of the air behind the seated valve. When this happens, you get full flow but, it is difficult to meter because of the forces involved. o To prevent the force of the pressurized fluid from acting on the button (and against you), a series of three o-ring seals is used to separate the pressurized fluid (orange ) from the output tube (red ), while having atmospheric pressure (light blue ) on either end. The output tube is shown in red here for clarity but it is also at atmospheric pressure like the light blue area. The result is that the pressurized fluid cannot exert any longitudinal forces on the button as the fluid travels from the input to the output tube. The remaining force required for activation is only that which is necessary to overcome the chosen spring. o In between the pressurized fluid (orange ) and the output tube (shown this time in light blue ) is a button (blue ) which has six longitudinal tapered slots (red arrow ) space evenly around the button shaft. As the button moves down (Fig 2J) the slots break the seal between the two regions and allows the fluid to flow from the input to the output tube. This tapered slot is larger at the top end of the slot so that the flow gradually increases the further down the button is pushed. With the excess forces from fluid pressure removed, metering from zero to full flow is now possible. 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  5. 5. product / project examples glenn klecker page 5 of 7  Developed a first ever disposable cartridge system for dental air/water syringes. o When a syringe needs to be repaired, which is typically every 2-5 years, the dentist must call out a service technician to perform the work. It costs between $200 and $300 for one service call (parts not included). Even if a dentist wanted to repair their own syringes, most all do not have the necessary tools to do so. o The syringe show here contains a single disposable cartridge (green). Inside of the cartridge are all of the tip seals, valves, stems, o-rings and springs which are most likely to fail during the life of the syringe. o The remaining components of the syringe are the handle, head and buttons. All these features have a 20-25 years life span and are unlikely to ever need repair. o To replace the cartridge, the user will remove the tip tube, unscrew the handle, slide out the cartridge and pull off the air and water supply tubes (by hand). Using a new cartridge, the process is reversed and will be ready to go in less than 2 minutes. o The cartridge is designed such that the entire assembly costs less than $2.00 to produce and requires no tools to replace them. o This cartridge is one of a number of fairly complex plastic moulded parts that I have designed. 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  6. 6. product / project examples glenn klecker page 6 of 7  Invented a self-actuating safety interlock mechanism to prevent injuries which were previously commonplace. o On all previous models, the knife blade (blue ) was able to come out of its stowed position if the pivot joint became loose. If this occurs while the user is gripping the handles, it can cut the user's palm. o My invention takes advantage of the relative motion between the pliers (red ) and the handle while the pliers are being deployed from their stowed position. o When the pliers (red ) are in their stowed position (Fig. 6) the knife blade (blue ) is able to pivot freely between its stowed (shown) and deployed positions. o When the pliers are fully deployed (Fig. 1) then the cam (red ) on the pliers (Fig. 7) has rotated about its axis and wedges itself between the two fingers of the spring (green ). In so doing, one finger is deflected laterally and a barb (#182) on that finger moves into the finger hole on the knife blade and prevents it from opening (#182 on Fig. 1). 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m
  7. 7. product / project examples glenn klecker page 7 of 7  Designed and built assembly and inspection equipment. o I have designed and built nearly twenty unique assembly fixtures, test gages and even one complex automated assembly machine. Half of the fixtures that I built involved hydraulic cylinders and PLC controllers. Unfortunately, I have only these three pictures of the more simple fixtures that I developed. o This is a close up of a fixture that built for doing a life-cycle test on the spring in the Leatherman Hybrid Tool. o This is a simple assembly fixture that is used to assemble the internal components of the Leatherman Crunch. The fixture is very complex because there are five components and four oriented spacers that have to be correctly aligned to assemble the tool correctly. o This is one of three unique pin insertion machines that I designed and built. 2 1 6 B r o w n S t r e e t , S i l v e r t o n , O r e g o n  5 0 3 . 9 3 0 . 5 0 8 7  g k l e c k e r @ g m a i l . c o m