# US 9,751,538 B2 · Sound absorbing panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,751,538 B2 - Document ID: US9751538B2 - Status: Granted - Kind: B2 - Application number: 14/646,200 - Filed: 2013-10-31 - Published: 2015-11-05 - Granted: 2017-09-05 - Earliest claimed: 2012-11-21 - Assignees: Central Japan Railway Company; Nippon Sharyo, Ltd. - Applicants: Central Japan Railway Company; Nippon Sharyo, Ltd. - Inventors: Yukio Takahashi; Hiroki Tsunoda; Yuya Futamura; Koichi Hayashi; Naoya Ozawa; Masaki Hase; Naoyuki Maruyama - Web page: https://patentgrep.com/patent/US9751538B2 ## CPC - B61D 17/00: Construction details of vehicle bodies (for tank wagons B61D5/00; for hopper cars B61D7/00; body details specially adapted for tipping wagons B61D9/06; for mine cars B61D11/00) - B61D 17/18: Internal lining, e.g. insulating - B61D 25/00: Window arrangements peculiar to rail vehicles (vehicle window arrangements in general B60J; cleaning vehicle windows B60S; heating arrangements specially adapted for transparent or reflecting areas H05B3/84) - B61D 37/003: {luggage rack and umbrella-stand for rail vehicles (luggage racks within vehicle bodies in general, e.g. busses B60R5/003)} - G10K 11/168: Plural layers of different materials, e.g. sandwiches - B61D: BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F) - G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR ## Abstract Provided is a sound absorbing panel that can satisfy the heat resistance properties and melting/dripping resistance properties required inside of a railway vehicle. A pier sound absorbing panel includes five sheets of first through fifth glass cloths that are stacked on an aluminum base plate. The edge section of the fifth glass cloth is affixed to the rear surface of the base plate using an adhesive, and the first through fourth glass cloths are fastened using staples. In other words, the first glass cloth and the base plate are fixed using an adhesive, and this adhesive is prevented from melting by the five sheets of the first through fifth glass cloths. The adhesive that fixes the edge section of the fifth glass cloth at the other surface of the base plate is prevented from melting by the five sheets of the first through fifth glass cloths and the base plate. ## Claims ### Claim 1 A sound absorbing panel installed on an inner wall surface of a railway vehicle, comprising: a metallic base plate having a first surface and an opposite second surface; an inner layer secured to the first surface of the base plate, the inner layer being constituted such that one glass cloth or at least two or more glass cloths are stacked; and a coating layer that is a glass cloth coating the inner layer from an opposite side to the base plate, the coating layer having an edge portion secured to the second surface of the base plate. ### Claim 2 (depends on 1) The sound absorbing panel according to claim 1, further comprising: a hook-and-loop fastener secured to the second surface of the base plate; a reinforcing plate secured to the second surface of the base plate while avoiding the hook-and-loop fastener; and a through hole opened at the base plate. ### Claim 3 (depends on 1) The sound absorbing panel according to claim 1, wherein the base plate and the inner layer are secured to one another with an adhesive, or the base plate and the edge portion of the coating layer are secured to one another with an adhesive. ### Claim 4 (depends on 1) The sound absorbing panel according to claim 1, wherein the coating layer has a portion covering a side portion of the inner layer, the covering portion inclining to form an acute angle with the base plate. ### Claim 5 (depends on 1) The sound absorbing panel according to claim 1, further comprising: a supporting member secured at an inner side of an outer peripheral portion of the base plate on the second surface of the base plate, the supporting member projecting to an opposite side to the inner layer. ### Claim 6 (depends on 1) The sound absorbing panel according to claim 1, further comprising: a coupling member secured to the second surface of the base plate, the coupling member laterally projecting with respect to the outer peripheral portion of the base plate coupled to another sound absorbing panel. ### Claim 7 (depends on 1) The sound absorbing panel according to claim 1, wherein the inner layer is constituted such that at least two or more glass cloths are stacked, at least two or more glass cloths from an opposite side of the base plate in the inner layer are coupled together with a staples, the staple including a center portion and a bent portion, the bent portion being bent from both end portions of the center portion, and the staples include: a first-direction row group where: longitudinal directions of the center portions of the staples are oriented to a first direction; a plurality of rows where the staples are arranged at predetermined intervals along the first direction are formed in a second direction intersecting with the first direction; and the center portions adjacent to one another in the second direction are formed in a staggered arrangement; and a second-direction row group where: the staples are formed between the predetermined intervals; longitudinal directions of the center portions of the staples are oriented to the second direction; a plurality of rows where the staples are arranged at predetermined intervals along the second direction are formed in the first direction; and the center portions adjacent to one another in the first direction are formed in a staggered arrangement. ### Claim 8 (depends on 1) A railway vehicle, comprising: a plurality of windows disposed at predetermined intervals from one another on an inner wall surface inside a cabin along a longitudinal direction of the cabin; a baggage rack that projects from the inner wall surface at an upper side of the window to the inside of the cabin; a gangway that couples a vehicle and a vehicle together; and the sound absorbing panel according to claim 1, wherein the sound absorbing panel is installed on at least one or more of: the inner wall surface between the windows adjacent to each other; the inner wall surface between the window and the baggage rack; an inferior surface of the baggage rack; a top surface of the baggage rack; the inner wall surface located at an upper side of the baggage rack; and an inner wall surface of the gangway. ### Claim 9 (depends on 8) The railway vehicle according to claim 8, further comprising: a window trim that surrounds a peripheral area of the window, wherein the sound absorbing panel has an end portion sandwiched between the window trim and the inner wall surface. ### Claim 10 (depends on 8) The railway vehicle according to claim 8, further comprising: a front bar installed on a distal end portion of the baggage rack, wherein the sound absorbing panel installed on the inferior surface of the baggage rack is sandwiched between the inferior surface of the baggage rack and the front bar. ### Claim 11 (depends on 8) The railway vehicle according to claim 8, further comprising: a hole opened at the base plate of the sound absorbing panel; and a hook that projects from the inner wall surface to the cabin side to be hooked on the hole. ### Claim 12 (depends on 8) The railway vehicle according to claim 8, further comprising: a first base that projects from the inner wall surface to the inside of the cabin; a second base that projects from the inner wall surface to the inside of the cabin at a predetermined interval from the first base; and a plate-shaped presser plate bridged across a projecting end portion of the first base and a projecting end portion of the second base, the presser plate having a predetermined width, wherein end portions of the adjacent sound absorbing panels are sandwiched between the inner wall surface and the presser plate.