Invention Grant
- Patent Title: Keypad with water and dust protection
- Patent Title (中): 键盘带防尘防尘
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Application No.: US12050481Application Date: 2008-03-18
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Publication No.: US08050019B2Publication Date: 2011-11-01
- Inventor: Dietmar Frank Wennemer , Chao Chen , Timothy Herbert Kyowski
- Applicant: Dietmar Frank Wennemer , Chao Chen , Timothy Herbert Kyowski
- Applicant Address: CA Waterloo
- Assignee: Research In Motion Limited
- Current Assignee: Research In Motion Limited
- Current Assignee Address: CA Waterloo
- Agency: Bennett Jones LLP
- Agent William B. Vass
- Main IPC: H05K7/14
- IPC: H05K7/14

Abstract:
A keypad suitable for use with a mobile communication or a handheld device. The keypad includes an actuator component formed from multiple materials and comprises a plurality of actuators, a sealing bead and/or a light guide. The sealing bead is formed from a flexible or compressible material such as silicone rubber. When the keypad is installed the sealing bead is compressed against the mounting surface in the device and provides a seal for the keypad against environmental agents such as moisture, dust and/or electrostatic discharges.
Public/Granted literature
- US20090236206A1 KEYPAD WITH WATER AND DUST PROTECTION Public/Granted day:2009-09-24
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