Compact hydraulically centered three-way transfer valve
US-12595854-B2 · Apr 7, 2026 · US
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Perrelli Frank patents
Perrelli Frank is listed as an inventor on 16 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Perrelli Frank |
| Total patents | 16 |
| First publication | Dec 15, 2022 |
| Latest publication | Apr 7, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Dual variable displacement pump fuel system with washed actuation flow and wash velocity control valve
US-2026078703-A1 · Mar 19, 2026 · US
Compact hydraulically centered three-way transfer valve
US-2026078828-A1 · Mar 19, 2026 · US
Filter with wash flow bypass valve
US-2026070009-A1 · Mar 12, 2026 · US
Actuator load and slew rate limiting via pressure throttling shutoff valve
US-12546339-B1 · Feb 10, 2026 · US
Parallel electrohydraulic servo valve controlled actuator with failure accommodation
US-2025129807-A1 · Apr 24, 2025 · US
Three way transfer valve for parallel electrohydraulic servo valve control of actuator
US-12163537-B1 · Dec 10, 2024 · US
Hydraulic actuator including a multi-head piston for hydraulic gearing
US-12145719-B2 · Nov 19, 2024 · US
Densimeter
US-12066452-B2 · Aug 20, 2024 · US
Dual range position sensing configurations for variable differential transformers
US-12018768-B2 · Jun 25, 2024 · US
Recent patents
Latest publications not already listed above.
Hydraulically locking actuator configuration
US-11851163-B2 · Dec 26, 2023 · US
Hydraulically locking actuator configuration
US-2023339603-A1 · Oct 26, 2023 · US
Hydraulic actuator including a multi-head piston for hydraulic gearing
US-2023339605-A1 · Oct 26, 2023 · US
Dual range position sensing configurations for variable differential transformers
US-2023194014-A1 · Jun 22, 2023 · US
Actuator with end stop valve
US-11635097-B1 · Apr 25, 2023 · US
Densimeter
US-2022397504-A1 · Dec 15, 2022 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Hamilton Sundstrand Corp | 16 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F15B2211/8752 | 6 |
| B64C13/40 | 6 |
| F15B13/0402 | 5 |
| F15B13/044 | 5 |
| F15B20/008 | 4 |