Passenger conveyor step having an acoustic barrier

Details Passenger conveyor step having an acoustic barrier Passenger conveyor step having an acoustic barrier

2004-07-08

2010-06-01

Deuble, Mark A (Department: 3651)

Conveyors: power-driven

Conveyor or accessory therefor specialized to convey people

By stairway having steps forming an endless member

C198S326000

Reexamination Certificate

active

07726459

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.

REFERENCES:
patent: 4519490 (1985-05-01), White
patent: 4858745 (1989-08-01), Haas et al.
patent: 5186301 (1993-02-01), Rivera
patent: 5284237 (1994-02-01), Mello et al.
patent: 5452789 (1995-09-01), Wolpers et al.
patent: 5924544 (1999-07-01), Kwon
patent: 6234295 (2001-05-01), Ogawa
patent: 6241071 (2001-06-01), Yamashita et al.
patent: 6585099 (2003-07-01), Babler et al.
patent: 6702094 (2004-03-01), Ishikawa et al.
patent: 2007/0170038 (2007-07-01), Howard et al.
patent: 505409 (1939-05-01), None
patent: 08-048482 (1996-02-01), None
patent: 2001-247285 (2001-09-01), None
International Search Report for International Application No. PCT/US04/22193 mailed Feb. 2, 2006.
Written Opinion of the International Searching Authority for International Application No. PCT/US04/22193 mailed Feb. 2, 2006.
Supplementary European Search Report for Application No. EP 04 75 6873 mailed Apr. 9, 2009.

Affiliated with

Also associated with

Rating

Passenger conveyor step having an acoustic barrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Passenger conveyor step having an acoustic barrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Passenger conveyor step having an acoustic barrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4189197