公开(公告)号：US20250130084A1

公开(公告)日：2025-04-24

申请号：US18691815

申请日：2021-09-14

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Daryl Eugene ANDERSON ,  Eric T. MARTIN

IPC: G01F1/696 ,  G05D7/06

Abstract: In some examples, a fluid flow meter for a conduit to carry a fluid, includes a first voltage connection point, a second voltage connection point, and a heater. The fluid flow meter includes a plurality of resistive sensors comprising a first resistive sensor on a first side of the heater and a second resistive sensor on a second side of the heater, wherein the first resistive sensor and the second resistive sensor are connected in series between the first voltage connection point and the second voltage connection point, wherein a sense connection point between the first resistive sensor and the second resistive sensor is to output a sense voltage that provides an indication of a fluid flow in the conduit.

公开(公告)号：US20220001673A1

公开(公告)日：2022-01-06

申请号：US16959394

申请日：2019-10-25

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Daryl Eugene ANDERSON ,  James Michael GARDNER ,  Christopher Hans BAKKER

IPC: B41J2/175

Abstract: A replaceable print apparatus component includes a print material reservoir, a print material within the reservoir having a first print material level, and a logic circuitry package including an interface and a logic circuit. The logic circuit may receive, via the interface, a first calibration parameter and receive, via the interface, a first request corresponding to a first sensor ID associated with a second print material level above the first print material level. The logic circuit may transmit, via the interface, a first digital value in response to the first request and receive, via the interface, a second calibration parameter less than the first calibration parameter. The logic circuit may receive, via the interface, a second request corresponding to the first sensor ID, and transmit, via the interface, a second digital value in response to the second request. The second digital value is less than the first digital value.