公开(公告)号：US20250085179A1

公开(公告)日：2025-03-13

申请号：US18626075

申请日：2024-04-03

Applicant: Apple Inc.

Inventor： Michael J. GLICKMAN ,  Kuolung LEI ,  Gregory B. ARNDT

IPC: G01L9/00 ,  B81B3/00 ,  G01L9/06 ,  G04G21/02

Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors having an integrated fluid cavity. The electronic device includes a housing having an opening. The electronic device also includes a pressure sensor disposed within the housing and adjacent to the opening. The pressure sensor includes a substrate and a sensing membrane disposed on the substrate that is configured to obtain pressure data. The pressure sensor also includes a membrane support disposed on the substrate and an outer membrane disposed on the membrane support. The pressure sensor also includes reference cavity formed between the sensing membrane and the substrate. The pressure sensor also includes a fluid cavity disposed between the sensing membrane and the outer membrane. In some aspects, the outer membrane forms a hermetic seal around the fluid cavity. In other aspects, the outer membrane has a stiffness that is lesser than the sensing membrane.

公开(公告)号：US20240085258A1

公开(公告)日：2024-03-14

申请号：US18226717

申请日：2023-07-26

Applicant: Apple Inc.

Inventor： Seow Yuen YEE ,  Michael J. GLICKMAN

IPC: G01L7/08 ,  G01D21/02

CPC classification number: G01L7/088 ,  G01D21/02 ,  G01L7/082 ,  G01L27/002

Abstract: Aspects of the subject technology relate to an apparatus having a housing, including a port exposed to an environment. The apparatus includes a pressure sensor disposed within the housing to measure a pressure of the environment. The pressure sensor includes a membrane to facilitate detection of a presence of an aggressor by using dynamic response analysis.

公开(公告)号：US20250085181A1

公开(公告)日：2025-03-13

申请号：US18465892

申请日：2023-09-12

Applicant: Apple Inc.

Inventor： Michael J. GLICKMAN ,  Gregory B. ARNDT

IPC: G01L19/06 ,  G01L27/00

Abstract: Aspects of the subject technology relate to electronic devices with pressure sensors. Pressure sensor occlusion may be mitigated by ejecting occluding liquid with pulsed liquid heating. Processing circuit of the electronic device can obtain pressure sensor data from the pressure sensor and determine that the opening is occluded based at least in part on a change in pressure within a cavity adjacent the opening. The processing circuitry applies a first power pulse to a heating element during a first phase to cause the heating element to form a gas pocket around the heating element by heating at least a portion of a water volume inside the cavity and applies a second power pulse to the heating element during a second phase following the first phase to cause the heating element to expand the gas pocket around the heating element by further heating the water volume inside the cavity.

公开(公告)号：US20240295457A1

公开(公告)日：2024-09-05

申请号：US18426198

申请日：2024-01-29

Applicant: Apple Inc.

Inventor： Ankur AGRAWAL ,  Krishna Prasad VUMMIDI MURALI ,  Michael J. GLICKMAN ,  Roberto M. RIBEIRO ,  Terrance P. KAO ,  Vincenzo COSTANZA

IPC: G01M3/32 ,  G01M13/005

CPC classification number: G01M3/3272 ,  G01M13/005

Abstract: An apparatus of the subject technology includes a housing, a first sensor to obtain a first measurement, an optional second sensor to obtain a second measurement, and a processor to determine a seal-quality metric of the housing based on the first measurement and the second measurement. The first sensor can include an internal pressure sensor disposed inside the housing, and the first measurement can include measurement of an internal pressure of the housing. The second sensor can include an external pressure sensor disposed at an outside wall of the housing, and the second measurement can include measurement of an external pressure.

公开(公告)号：US20240035912A1

公开(公告)日：2024-02-01

申请号：US18216440

申请日：2023-06-29

Applicant: Apple Inc.

Inventor： Seow Yuen YEE ,  Ashwin BALASUBRAMANIAN ,  Eric T. CHIANG ,  Michael J. GLICKMAN ,  Roberto M. RIBEIRO

IPC: G01L19/06

CPC classification number: G01L19/0636 ,  G01L19/0654

Abstract: Aspects of the subject technology relate to an apparatus having a housing including a port exposed to an environment. A pressure sensor is disposed within the housing to measure a pressure of the environment. A medium partially fills a sensor cavity or is coated over the pressure sensor, and a cap including multiple openings is disposed over the pressure sensor. The openings of the cap are arranged to be offset from the port.