Group 8 - Schlage B362NV619 Double-Cylinder Deadbolt and Schlage JD60V619 Single-Cylinder Deadbolt

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I. Project Planning

A. Introduction

In this portion of the project, Group 8 planned out how to proceed with our analysis, dissection, and reanalization of their Schlage B362NV619 Double-Cylinder Deadbolt and Schlage JD60V619 Single-Cylinder Deadbolt. Group 8 assessed the group, the products, and the project as whole and created a Work Proposal, Management Proposal, and an Initial Assessment of the products. Section B, called "Project Management," contains a work proposal, describing plans to disassemble the locks, followed by a management proposal for the members of the group. Section C is an initial assessment of the locks, made prior to any dissection.

B. Project Management

1.Work Proposal
In order disassemble and reassemble the deadbolt locks, the required tools will be a Phillips screwdriver, and a pair of small tweezers. The process of dissection will take an estimated 30 minutes per lock, and with two locks, Group 8 will need to spend about an hour dissecting. First off, the person who is dissecting must take precautions in order to not lose any of the extremely small components of the deadbolt locks. The products come with the housing of the deadbolt already disassembled leaving only the plug, and plug nut exposed, as well as the two inner screws. Therefore, the procedure for taking apart the lock will involve unscrewing the two screws, with the Philips head screwdriver, that are on the locking cylinder around the plug. Then using the tweezers, one would have to push the retaining pin inside the cylinder, allowing the plug nut to move freely about and eventually be removed completely. After removing the plug nut, the retaining pin and its spring would have to be removed very carefully in order to prevent the spring from releasing its stored up energy. Now the plug has to be carefully removed from the cylinder, being sure not to allow the springs and drivers pop out. Then, while making sure the springs and drivers are aligned with the key way, the plug can be removed allowing the springs and drivers to come out, one by one. Making absolutely sure that each set of drivers and springs is correctly noted to which pin they belong to. After all pins are cleared, the of the Locking mechanism is disassembled.The assembly of the locks will use the same tools, but may require up to double the time. The challenge with the assembly will be putting all of the small components back into the correct place so they are functional. The procedure for assembly will be the reverse procedure of Group 8's dis-assembly.
Current Capabilities Shortcomings
  • All group members have hands-on experience with tools
  • Strong communication amongst group members
  • All group members experienced in AutoCAD
  • English is a second language to 3/5 group members
  • No prior experience with wiki pages
  • Need to be more deadline oriented
2.Management Proposal
Each member of Group 8 has agreed to meet at 5pm on Mondays, Wednesdays, and Fridays in the Silverman Library, throughout the course of the project. At the group meetings, the group will compare their progress to the project requirements in the provided timeline to ensure the group is on schedule. Tasks will be assigned to group members to complete on their own time, and deadlines will be set by the project manager, in order to stay the course of the timeline. If additional meetings are required, the group will decide on a time that fits the group members schedules. Individual group members will be entrusted to complete their duties in a timely manner.If a group member fails to complete their task, they will first be given a warning. If a second offense occurs, a course instructor will be notified. Any other group conflicts that may arise will be handled through a majority vote.
Name Position Responsibilities
Dennis Posheluk Project Manager
  • Oversees each member of the group
  • Sets deadlines for group members
  • Edits and submits final copies
Hing Fong Hardware Manager
  • Keeps and maintains product
  • Brings product to meetings or when demanded
Heegeon Yang Technical Assistant
  • Assists in the disassembling of product
  • Assists in reassembly
  • Learns how product works
Brandon Ravel Technical Lead
  • In charge of disassembling product
  • In charge of any reassembly
  • Must learn how product works
Zachary Reisdorf Communications Liaison
  • Contacts group members for meetings
  • Communicates questions to professors
Point of contact: Any questions or comments are referred to the email address of the project manager:

C. Initial Assessment

1. Development Profile
i. Product Origins: According to Schlage, the company that produced Group 8's locks, devices designed to secure or lock doors have been around since 4000 B.C., used by the Egyptians originally [1]. For Group 8's products, the first United States patent for a Deadbolt lock came from the Lori Engineering Corporation of Southington, CT on June 16, 1981 [2].
ii. Development Concerns: An economic concern that would have existed during the time of development would be using an alloy metal that has resistant properties at a low cost. Developers would want to keep production costs down while providing a quality product. A global concern would have been which type of door is used in different regions. Some regions may prefer wooden doors, while others may prefer metal doors. The developers would need to design a lock that is compatible with the different types of doors worldwide. Furthermore,developers would have put into consideration the climates at potential markets. The product must be able to resist different temperature and weather conditions.
iii. Intended Consumer Region: While locks are used worldwide, analysis of our product packaging indicated it had the intended consumer region of the United States. The containers that the deadbolt locks were packaged in was written in mainly in English with some use of Spanish. The languages indicate that the market is the United States, since English and Spanish are the two most prolific languages in America. The instructions that came with both locks came in several languages however (including English, Spanish, French) indicating that the lock may have been distributed across North America. Our analysis suggests the locks appear to be specifically made for the United States of America, although a change in the packaging language would allow them to enter other foreign markets.
iv. Intended Impact: The intended impact for the consumer is to offer a practical method of holding a conventional man door securely shut when desired, and then allowing the door to be opened by a specified user. Moreover, the impact on society the deadbolt lock is security. This could be protection for an individual, or a possession. Another societal impact is peace of mind, since a deadbolt lock provides added security to a door. Finally deadbolt locks offer society boundaries, whether through appearance or operation.
2. Usage Profile
i. Intended Use: The intended use of the deadbolt locks is to be installed onto a door, then adjusted accordingly in order to allow door movement or not to.
ii. Home or Professional: The two deadbolt locks from Schlage that Group 8 is using were designed and sold as residential locks.
iii. Product's Jobs:The deadbolt inserted into the door frame will prevent the door from opening, and when the deadbolt is retracted, by the turning of a key, the door is allowed to open.
iv. Tasks to Achieve Different Objective:
3. Energy Profile
i. Energy Used:Rotational and translation motion energies are the kinetic energies used in the usage of the locks. Elastic energy is the potential energy in the use of a lock.
ii. Source of Energy: The rotational energy originates from the rotation of the human wrist, rotating a key. The rotational energy is then converted to translation energy. The elastic energy comes from compression of springs in the cylinder of the deadbolt lock.
iii. Transformation of Energy: Rotational energy of the cylinder rotating is converted to translation energy by a cam. The translation energy then is used to move the deadbolt.
4. Complexity Profile
i. Number of Components:
ii. Complexity of Individual Components:
iii. Complexity of Component Interactions:
5.Material Profile
i. Visible Materials: The materials that are visible from the outside, which is the housing separated in two, is a core of steel alloy with what appears to be nickel plating on the outside of the shell and the handle. On the inside of the housing shell , there is what appears to be a plating of brass all over a steel alloy core along with brass like coatings on the mounting screws, slider, face and strike plate. The cylinder itself consists of a steel alloy with a plating of nickel. The plug face on the inside of the housing shell and the plug nut both have the same brass coating of the mounting screws and face plate, While on the outside the plug face has what looks like a stainless steel face, to match the Nickel plated steel of the Outer Shell.
ii. Possible Out-of-Sight Materials: Materials that are not visible consist of stainless steel springs and most likely steel alloy drivers and pins
6. User Interaction Profile
i. How to Interface: The user has a key, which he inserts into a keyhole, and by rotating, either moves the deadbolt into the door frame or out of the door frame.
ii. Intuitiveness of Interface:The interface is very simple. There is a cause-and-effect relationship between the user rotating a key and the deadbolts position.
iii. Easiness of Use:The product is very easy to use due to the fact that the user only has to insert a key into a keyhole and rotate it.
iv. Maintenance:Regular maintenance for a deadbolt lock is not required. Locks typically have very long life cycles, and if a component malfunctions, low product cost make it appealing to just replace the entire product rather than fix the component.
7. Product Alternative Profile
i. Alternative Designs:
ii. Comparison:
iii. Cost Difference:
iv. Situations to Use Alternative Product:


[1] Schlage Lock Company LLC, (2013), History of Security, Retrieved from

[2] Patentgenius, (2006-2011), Lori Engineering Corporation Patents, Retrieved from