Forearm-Mounted Communication Device with Contoured Housing
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Solution Overview
Problem
Conventional portable communication devices, such as PDAs, are not easily accessible when carried in waist-mounted cases, which can hinder quick use and increase the risk of damage or loss, particularly in situations like military operations or everyday activities where rapid access is necessary.
Innovation Solution
A PDA-like device designed for wear on the forearm with a contoured housing and mounting surface that securely fits the user's arm, allowing constant and immediate access to the display screen, and featuring a removable battery for easy replacement without removing the device from the arm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the PDA is placed in a waist-mounted carrying case for protection, then the device is protected from damage, but the device is not easily accessible and requires removal for use
Solution Approach 1:
The patent transitions the device from waist-mounted storage to wrist-mounted wearability, changing the spatial dimension and location of device carriage. This allows the device to remain protected while being constantly accessible on the user's wrist, eliminating the need to remove it for use.
Solution Approach 2:
The device is pre-positioned on the wrist in a ready-to-use state before any operation is needed. The contoured back and wrist strap prepare the device for immediate use, so when the user needs to access it, no removal or setup action is required.
2Productivity
If the PDA is frequently removed from and returned to a carrying case for use, then the device can be used when needed, but the likelihood of dropping, losing, or damaging the device increases
Solution Approach 1:
The patent combines the device with the wrist through the contoured back and wrist strap, creating an integrated wearables system. This merging eliminates the repeated separation and reattachment cycles that create risk, while still allowing frequent use through direct wrist access.
Solution Approach 2:
The wrist acts as an intermediary between the device and the user's body, providing a secure attachment point that reduces handling risks. The contoured back and wrist strap serve as mediating structures that hold the device safely during activities.
3Ease of operation
If the mounting surface is contoured to conform to the forearm, then the device is comfortable and secure to wear, but the manufacturing complexity increases
Solution Approach 1:
The patent applies curvature to the back surface of the housing to match the natural contour of the forearm. This curved design provides ergonomic comfort and secure fit while being manufacturable using standard molding techniques for plastic housings.
Data Source
AI summary
An improved PDA-like portable electronic communication device includes a housing having a display screen on the front and a mounting surface that is contoured to generally conform to the shape of a user's forearm. In this way, the communication device can be comfortably and securely worn on a user's forearm so that it is constantly or immediately available for use. In example embodiments, the mounting surface is formed by the back side of the housing and is cylindrically concave or frustoconically concave. In other example embodiments, the device includes a mount to which the housing attaches in multiple positions, with the mount having a frustoconically concave back surface in one embodiment and with another embodiment additionally including mating cylindrically convex and concave surfaces of the mount and the housing.