Invention Grant
- Patent Title: Passenger conveyor step having an acoustic barrier
- Patent Title (中): 具有声屏障的乘客输送机台阶
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Application No.: US11570464Application Date: 2004-07-08
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Publication No.: US07726459B2Publication Date: 2010-06-01
- Inventor: Vijay Jayachandran , Goldino Alves , Dave Jarvis , Fred Spielman
- Applicant: Vijay Jayachandran , Goldino Alves , Dave Jarvis , Fred Spielman
- Applicant Address: US CT Farmington
- Assignee: Otis Elevator Company
- Current Assignee: Otis Elevator Company
- Current Assignee Address: US CT Farmington
- Agency: Carlson, Gaskey & Olds PC
- International Application: PCT/US2004/022193 WO 20040708
- International Announcement: WO2006/016873 WO 20060216
- Main IPC: B66B23/12
- IPC: B66B23/12
Abstract:
An escalator step (12) includes a sound barrier material (40) covering over at least a portion of an inner surface (42) of a tread portion(30) and an inner surface (44) of a rise portion (32). In one example, the sound barrier material (40) comprises a sheet of vinyl. The sound barrier material (40) reduces noise radiation from the step (12) toward a cavity (26) within a passenger conveyor support structure (20) and reduces noise emanations from the cavity (26) through the steps (12). Several embodiments for securing the sound barrier material (40) in place are disclosed.
Public/Granted literature
- US20070175730A1 Passenger conveyor step having an accoustic barrier Public/Granted day:2007-08-02
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