IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0367603
(1995-01-03)
|
발명자
/ 주소 |
- Sarihan Vijay (Paradise Valley AZ)
|
출원인 / 주소 |
- Motorola, Inc. (Schaumburg IL 02)
|
인용정보 |
피인용 횟수 :
23 인용 특허 :
0 |
초록
▼
A flow sensor device including a body portion that provides a pressure differential when placed in fluid stream and a pressure sensor portion associated with the body portion to sense the pressure differential. In one embodiment, the body portion (13,72,113) includes a channel (16,76,116) that exten
A flow sensor device including a body portion that provides a pressure differential when placed in fluid stream and a pressure sensor portion associated with the body portion to sense the pressure differential. In one embodiment, the body portion (13,72,113) includes a channel (16,76,116) that extends from an entrance side (24,44,124) to an exit side (26, 46). The channel (16, 76,116) has an inner portion (27, 47,87) between the entrance side (24, 44,124) and the exit side (26, 46). The channel (16,76,116) has a first cross-sectional area at the entrance side (24,44,124) and a second cross-sectional area at the inner portion (27,47,87), which is less than the first cross-sectional area. The pressure sensor portion (14,74,114) includes a diaphragm (18,38,78,118) and is associated with the body portion (13,72,113) such that when a fluid passes through the channel (16, 76,116), a pressure differential is sensed by the pressure sensor portion (14,74,114).
대표청구항
▼
A flow sensor device comprising: a body portion that provides a pressure differential when placed in a fluid stream, wherein the body portion has a duct that extends from an entrance side to an exit side, and wherein the duct has a first and a second opposed sides, a first cross-sectional area at th
A flow sensor device comprising: a body portion that provides a pressure differential when placed in a fluid stream, wherein the body portion has a duct that extends from an entrance side to an exit side, and wherein the duct has a first and a second opposed sides, a first cross-sectional area at the entrance side, an inner portion between the entrance side and the exit side, and a second cross-sectional area at the inner portion, and wherein the second cross-sectional area is less than the first cross-sectional area; a plate portion coupled to the body portion to form one side of the duct; and a pressure sensor portion having a diaphragm and piezoresistive elements, the diaphragm associated with the body portion such that the diaphragm deflects based upon the pressure differential, wherein velocity of the fluid stream is determined from the pressure differential.
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