1. ME 4182 Mid Term Presentation Team Moondogs October 2, 2006 From left: Rahul Kirtikar, Chris Sampson, Chris Culver, Mike Widerquist, Elias Krauklis http://www.prism.gatech.edu/~mefach21

2. Objectives Problem Statement Problem Statement Design Partition Design Partition Task Assignments and Project Plan Task Assignments and Project Plan Current Solutions Current Solutions Conceptual Designs Conceptual Designs Evaluation Matrix and Design Selection Evaluation Matrix and Design Selection Future Plans Future Plans

3. Problem Statement A typical trash bag holds about 13 gallons, a lot of which is empty space A typical trash bag holds about 13 gallons, a lot of which is empty space For the average family, this equates to taking out the trash once or twice per day For the average family, this equates to taking out the trash once or twice per day The most viable solution is to compact the trash and minimize the empty space The most viable solution is to compact the trash and minimize the empty space Current automatic trash compactors exist but cost over $400 and require installation Current automatic trash compactors exist but cost over $400 and require installation

4. Problem Statement A manual trash compactor can perform the same duty without the high cost and permanent fixture A manual trash compactor can perform the same duty without the high cost and permanent fixture A manual trash compactor will reduce the frequency of replacing the trash bag by at least half, per day A manual trash compactor will reduce the frequency of replacing the trash bag by at least half, per day Trash can should be relative in size to a typical kitchen trash can of 13”x10”x30” Trash can should be relative in size to a typical kitchen trash can of 13”x10”x30” It should also be aesthetically pleasing and easy to operate It should also be aesthetically pleasing and easy to operate

5. Design Partition Trash Canister Trash Canister Responsible for sustaining the unit that holds the trash Responsible for sustaining the unit that holds the trash Square, circular, and rectangular canisters Square, circular, and rectangular canisters Trash Container Trash Container The actual unit that holds the trash The actual unit that holds the trash Trash bags, separate canisters, and plastic linings Trash bags, separate canisters, and plastic linings Trash Enclosure Trash Enclosure Encloses the trash into the trash canister from the visual public Encloses the trash into the trash canister from the visual public Hinged lids, removable lids, pull-out systems, and flaps Hinged lids, removable lids, pull-out systems, and flaps

6. Design Partition Trash Compactor Trash Compactor Two major parts of this assembly must include a compaction plate and a device that moves the compaction plate into the trash Two major parts of this assembly must include a compaction plate and a device that moves the compaction plate into the trash A circular or rectangular plate for the compaction surface, as well as a hydraulic lift, a ratchet jack system, a crank system, a scissor jack, and an auger A circular or rectangular plate for the compaction surface, as well as a hydraulic lift, a ratchet jack system, a crank system, a scissor jack, and an auger Movements can come from the top to bottom of the canister, from the bottom to top of the canister, or from the walls of the canister Movements can come from the top to bottom of the canister, from the bottom to top of the canister, or from the walls of the canister

7. Task Assignment Chris Sampson Chris Sampson Team leader Team leader Lead weekly reports Lead weekly reports Coordinate and mediate group meetings Coordinate and mediate group meetings Rahul Kirtikar Rahul Kirtikar Website manager Website manager Maintenance of deliverables Maintenance of deliverables CAD CAD Michael Widerquist Michael Widerquist Construction manager Construction manager Purchasing and fabrication of design parts Purchasing and fabrication of design parts Part drawings Part drawings Chris Culver Construction manager Purchasing and fabrication of design parts Prototype development Elias Krauklis Patent research Engineering analysis Material acquisition

8. Project Plan

9. Current Solutions: “Linkage Manual Trash Compactor” Patent # 6,851,357 Feb. 8 th, 2005 Inventor: Rudolph Martorella Inventor: Rudolph Martorella Utilizes a coupling arm (30) connected to a lever arm (26) which is connected to the plunging arm (36) Utilizes a coupling arm (30) connected to a lever arm (26) which is connected to the plunging arm (36) The plunging arm lowers the compression plate (50) and compress the garbage The plunging arm lowers the compression plate (50) and compress the garbage The container is a slideable tray which allows for concealment The container is a slideable tray which allows for concealment

10. Current Solutions: “Rack and Pinion Manual Trash Compactor” Patent # 5,619,915 April 15th, 1997 Inventor: William E. Wagner Inventor: William E. Wagner Includes a trash bin that is mounted to a portable platform Includes a trash bin that is mounted to a portable platform The trash bin is then connected to a compaction plate that is held together by a rack and pinion gear The trash bin is then connected to a compaction plate that is held together by a rack and pinion gear A drive wheel is connected to the gearing to allow for lowering of the compression plate A drive wheel is connected to the gearing to allow for lowering of the compression plate A compression spring is used to return compression plate to original position A compression spring is used to return compression plate to original position Drain holes are contained on the bottom of the portable platform for use when cleaning Drain holes are contained on the bottom of the portable platform for use when cleaning

11. Current Solutions : Automatic Trash Compactor Uses a mechanically driven piston to crush trash Uses a mechanically driven piston to crush trash Can apply large amount of compacting force Can apply large amount of compacting force Expensive : approx. $400 Expensive : approx. $400

12. Current Solutions : “The Bettermaid Compactor” Produced by Bettermaid Compactors Inc. Produced by Bettermaid Compactors Inc. Incorporates the use of a scissor mechanism within a refuse bin Incorporates the use of a scissor mechanism within a refuse bin Allows for application of up to 400 lbs force of compaction Allows for application of up to 400 lbs force of compaction Cost is $129.99 Cost is $129.99 Compaction ratio is around 2:1 (by inspection) Compaction ratio is around 2:1 (by inspection) Endorsed by Canadian Heavy Weight Boxing Champion Donovan "Razor" Ruddock Endorsed by Canadian Heavy Weight Boxing Champion Donovan "Razor" Ruddock

13. Conceptual Designs: Grinder Design

14. Conceptual Designs: Side Trash Compactor The trash lid has to be removed to lift the side panel out from in front of the compaction plate The trash lid has to be removed to lift the side panel out from in front of the compaction plate Once the side panel is removed the lid can be replaced and the compaction can begin Once the side panel is removed the lid can be replaced and the compaction can begin The compaction in this design has the ability to be very strong since a foot mechanism or a long hand crank can be placed one foot off the ground The compaction in this design has the ability to be very strong since a foot mechanism or a long hand crank can be placed one foot off the ground The side panel may not be needed if a trash bag could be used in this design The side panel may not be needed if a trash bag could be used in this design

15. Conceptual Designs: Auger Design Auger with grooves reversed to cause compaction instead of extrusion Auger with grooves reversed to cause compaction instead of extrusion Trash is placed into canister through lid opening Trash is placed into canister through lid opening With an adequate amount of trash the auger is rotated which causes compaction With an adequate amount of trash the auger is rotated which causes compaction Spring Loaded plate is then released to allow waste to fall into canister Spring Loaded plate is then released to allow waste to fall into canister Auger Crank Lid Canister Release Point

16. Conceptual Designs: Foot Pedal Design First, compacts the trash by placing the lid on the container First, compacts the trash by placing the lid on the container Then, a foot pump motion lifts an inner trash container straight up onto a compacting plate stabilized by ones hand Then, a foot pump motion lifts an inner trash container straight up onto a compacting plate stabilized by ones hand

17. Conceptual Designs: Hydraulic Lift and Compaction Design Hydraulic bottle jack attached to base of outer can Hydraulic bottle jack attached to base of outer can Easily operated by a foot pedal Easily operated by a foot pedal Capable of applying hundreds of pounds of force Capable of applying hundreds of pounds of force Upper lid is retracted into the trash can to compress the trash as a mechanism of the hydraulic jack. Upper lid is retracted into the trash can to compress the trash as a mechanism of the hydraulic jack. Hydraulic Lift and Compaction Design

18. Conceptual Designs: Hydraulic Bottle Jack Design Inverted hydraulic Bottle Jack attached to inside of lid Inverted hydraulic Bottle Jack attached to inside of lid Easy to operate by pumping the lever to extend the jack arm Easy to operate by pumping the lever to extend the jack arm Capable of applying several thousand pounds of force Capable of applying several thousand pounds of force Easy to retract the arm by a turn of the lever to release hydraulic pressure Easy to retract the arm by a turn of the lever to release hydraulic pressure Side removal of trash bags Side removal of trash bags Retracted Bottle Jack

19. Pair-wise Comparison Matrix Accounts for relative importance of each design aspect Accounts for relative importance of each design aspect

20. Evaluation Matrix

21. Design Selection : Hydraulic Foot Pedal 100 lbf input force from the leg 400 lbf output force from the hydraulic system Telescope elevates 1.5 inches per pump Total of 7 to 10 pumps for completion

22. Future Plans Need to research the mechanics of a check valve as well as oil reservoir system Need to research the mechanics of a check valve as well as oil reservoir system Determine placement and method of pressure release valve Determine placement and method of pressure release valve

23. Questions? Suggestions?