Jar Opener Redesign Team 04F Sponsor: R.I.T. ME Dept. Advisor: Dr. Walter Sean Doherty Frank Novak Mike Salvaterra

History of Team 04F Fall 2002: Sponsor FLVNS Primary Contact: Ed Shanshala Patient Mobility ProjectPatient Mobility Project Easy Transfer Bath Bench

History of Team 04F Winter : Sponsor FLVNS Primary Contact: Ed Shanshala Similar, although inferior, design found on the internet.Similar, although inferior, design found on the internet. Loss of funding.Loss of funding. Redesign project proposed.Redesign project proposed.

History of Team 04F Spring 2003: Sponsor FLVNS Primary Contact: ??? Ed Shanshala has left the building.Ed Shanshala has left the building. FLVNS loses interest in funding our project.FLVNS loses interest in funding our project. RIT ME Dept. graciously offers funding.RIT ME Dept. graciously offers funding.

Original Design Requirements Design a device that willDesign a device that will –Utilize mechanical or electrical methods to open jars, or a combination of both. –Break the vacuum seal of jars with right-handed threaded lids. –Be compatible with jars of variable lid diameter and jar height. –Be designed within a minimized budget. Sean Doherty Frank Novak Mike Salvaterra

Original Design Requirements Design a device that willDesign a device that will –Open many jars of different sizes consecutively and without failure. –Be designed for intuitive use, possibly utilizing visual cues. –Not pose any safety hazard, however small, with normal use (sharp edges, pinch points, etc.) –Be durable. Sean Doherty Frank Novak Mike Salvaterra

Original Jar Opener

Design Concept Straight slotted plates Curved slotted plates Sliding gripper assemblies

Design Flaws Excessive weightExcessive weight OversizedOversized Lacks aesthetic appealLacks aesthetic appeal DFA inefficienciesDFA inefficiencies

Redesign Requirements Reduce the area of the footprint by 40% or more.Reduce the area of the footprint by 40% or more. Reduce the weight of the device by 50% or more.Reduce the weight of the device by 50% or more. Improve the aesthetics of the design.Improve the aesthetics of the design. Produce a prototype with a cost of $300 or less.Produce a prototype with a cost of $300 or less.

Redesign Considerations Range of jar sizesRange of jar sizes Elimination of cantilever supportElimination of cantilever support Reuse of slotted plate and gripper designReuse of slotted plate and gripper design Recycle parts, wherever possible to reduce costRecycle parts, wherever possible to reduce cost

Redesigned Jar Opener Mostly delrin constructionMostly delrin construction Scaled down plate assemblyScaled down plate assembly 3-legged support plate3-legged support plate Recycled grippers and top rotating hub assemblyRecycled grippers and top rotating hub assembly

Redesigned Jar Opener

Prototype Construction CNC base and slotted platesCNC base and slotted plates Mill “Y-Plate”Mill “Y-Plate” Bore out lower leg assembliesBore out lower leg assemblies Turn down upper legsTurn down upper legs Drill and tap holesDrill and tap holes Re-machine baseRe-machine base

Stress Calculations Assumptions 55 in-lb max torque55 in-lb max torque Maximum extension of legsMaximum extension of legs Maximum stress exists in the rod, where attached to the y-plate Factor of Safety = 2.1

DFA Statistics

Testing of Prototype Locking mechanismLocking mechanism Machining of base: inconsistent dimensionsMachining of base: inconsistent dimensions Slotted plate invertedSlotted plate inverted

Testing of Prototype Successfully opened jars of various sizesSuccessfully opened jars of various sizes Telescoping legs slide smoothlyTelescoping legs slide smoothly Locking mechanism is effectiveLocking mechanism is effective

Budget

Schedule Task 15- Mar 22- Mar 29- Mar 05- Apr 12- Apr 19- Apr 26- Apr 03- May 10- May 17- May Scheduling Requirements Obtain Sponsor Re-design Design Approval Budget Budget Approval Order Materials Build Technical Paper Test Prepare Presentation

Conclusion 70% weight reduction70% weight reduction 57% footprint area reduction57% footprint area reduction Increased Assembly EfficiencyIncreased Assembly Efficiency Our redesigned Jar Opener allows the user to effortlessly open jars of various sizes. Its sleek, efficient, and cost effective design makes this product attractive to potential investors and practical for consumers to use in their homes.

Questions? ??