# US 10,371,177 B2 · Diaphragm for pneumatic controller > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,177 B2 - Document ID: US10371177B2 - Status: Granted - Kind: B2 - Application number: 15/185,112 - Filed: 2016-06-17 - Published: 2017-12-21 - Granted: 2019-08-06 - Earliest claimed: 2016-06-17 - Assignees: Hamilton Sundstrand Corporation - Applicants: Hamilton Sundstrand Corporation - Inventors: Adam Faass; Robert DeFelice - Web page: https://patentgrep.com/patent/US10371177B2 ## CPC - F15B 15/10: the motor being of diaphragm type - F16J 3/06: Bellows pistons - F16K 31/126: the fluid acting on a diaphragm, bellows, or the like (F16K31/145, F16K31/165, F16K31/365, F16K31/385 take precedence) - F15B: SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR - F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A pneumatic controller includes a housing, a piston located in the housing and movable therein and a diaphragm located at the piston to isolate a first chamber of the pneumatic controller from a second chamber of the pneumatic controller. The diaphragm includes a first diaphragm surface, a diaphragm opening extending through the diaphragm, and a fabric reinforcing layer to strengthen the diaphragm. A diaphragm to isolate a first chamber of a pneumatic controller from a second chamber of a pneumatic controller includes a first diaphragm surface, a diaphragm opening extending through the diaphragm, and a fabric reinforcing layer to strengthen the diaphragm. ## Claims ### Claim 1 A pneumatic controller, comprising: a housing; a piston disposed in the housing and movable therein; a diaphragm disposed at the piston to isolate a first chamber of the pneumatic controller from a second chamber of the pneumatic controller, the diaphragm including: a first diaphragm surface; a diaphragm opening extending through the diaphragm; two fabric reinforcing layers to strengthen the diaphragm; and a second diaphragm surface opposite the first diaphragm surface, the two fabric reinforcing layers disposed between the first diaphragm surface and the second diaphragm surface; wherein the two fabric reinforcing layers are of unequal size. ### Claim 2 (depends on 1) The pneumatic controller of claim 1, further comprising: a spring seat disposed at the piston; and a spring operably connected to the spring seat to bias a position of the piston; wherein the diaphragm is disposed between the piston and the spring seat. ### Claim 3 (depends on 1) The pneumatic controller of claim 1, wherein at least one fabric reinforcing layer of the two fabric reinforcing layers are disposed at the first diaphragm surface. ### Claim 4 (depends on 3) The pneumatic controller of claim 3, wherein the at least one fabric reinforcing layer covers an entirety of the first diaphragm surface. ### Claim 5 (depends on 3) The pneumatic controller of claim 3, further comprising at least another fabric reinforcing layer of the two fabric reinforcing layers disposed at the second diaphragm surface. ### Claim 6 (depends on 1) The pneumatic controller of claim 1, wherein at least one fabric reinforcing layer of the two fabric reinforcing layers are integrally molded into the diaphragm. ### Claim 7 (depends on 1) The pneumatic controller of claim 1, wherein the two fabric reinforcing layers are formed from a high temperature resistant material. ### Claim 8 A diaphragm to isolate a first chamber of a pneumatic controller from a second chamber of a pneumatic controller comprising: a first diaphragm surface; a diaphragm opening extending through the diaphragm; and two fabric reinforcing layers to strengthen the diaphragm; and a second diaphragm surface opposite the first diaphragm surface, the two fabric reinforcing layers disposed between the first diaphragm surface and the second diaphragm surface; wherein the two fabric reinforcing layers are of unequal size; wherein at least one fabric reinforcing layer of the two fabric reinforcing layers is disposed at the first diaphragm surface; and wherein the at least one fabric reinforcing layer covers less than 75% of the first diaphragm surface. ### Claim 9 (depends on 8) The diaphragm of claim 8, wherein the at least one fabric reinforcing layer covers between 25% and 75% of the first diaphragm surface. ### Claim 10 (depends on 8) The diaphragm of claim 8, further comprising at least another fabric reinforcing layer of the two fabric reinforcing layers disposed at the second diaphragm surface. ### Claim 11 (depends on 8) The diaphragm of claim 8, wherein the at least one fabric reinforcing layer of the two fabric reinforcing layers is formed from a high temperature resistant material. ### Claim 12 (depends on 8) The diaphragm of claim 8, wherein the at least one fabric reinforcing layer of the two fabric reinforcing layers is integrally molded into the diaphragm. ### Claim 13 A pneumatic controller, comprising: a housing; a piston disposed in the housing and movable therein; a spring seat disposed at the piston; a spring operably connected to the spring seat to bias a position of the piston; a bolt extending through the spring seat into the piston to secure the spring seat to the piston; a diaphragm interposed between the piston and the spring seat to isolate a first chamber of the pneumatic controller from a second chamber of the pneumatic controller, the diaphragm including: a first diaphragm surface; a diaphragm opening extending through the diaphragm, the bolt extending through the diaphragm opening; and two fabric reinforcing layers to strengthen the diaphragm; and a second diaphragm surface opposite the first diaphragm surface, the two fabric reinforcing layers disposed between the first diaphragm surface and the second diaphragm surface; wherein the two fabric reinforcing layers are of unequal size; and a collar disposed at the spring seat and extending through the diaphragm opening.