Invention Grant
- Patent Title: Light-emitting device having a phosphor particle layer with specific thickness
- Patent Title (中): 具有特定厚度的荧光体颗粒层的发光装置
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Application No.: US10386758Application Date: 2003-03-11
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Publication No.: US07176647B2Publication Date: 2007-02-13
- Inventor: Walter Parsadayan , Wayne C. Hom
- Applicant: Walter Parsadayan , Wayne C. Hom
- Applicant Address: US IL Elmhurst
- Assignee: The Chamberlain Group, Inc.
- Current Assignee: The Chamberlain Group, Inc.
- Current Assignee Address: US IL Elmhurst
- Agency: Fitch, Even, Tabin & Flannery
- Main IPC: H02K17/32
- IPC: H02K17/32 ; H02P3/00
Abstract:
A method and system for controlling the speed of security gate depending on its length is disclosed. It includes a system for determining the length of a gate that the system is working with and which automatically sets the speed of movement of the gate based on length. The system works automatically so that human intervention is not necessary to set the optimal speed once installed.
Public/Granted literature
- US20040177558A1 Gate operator with speed and torque control Public/Granted day:2004-09-16
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