Patents
US 12763104 B2: Ultrasonic motor rotary actuator for hard disk drive
- Granted
- 2026-10-13
- Filed
- 2025-03-21 application 19086416
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Described are piezoelectric ultrasonic motor (USM) assemblies to drive the rotary motion of an actuator arm assembly in a hard disk drive (HDD). Such USMs may be used in place of electromagnetic means such as a conventional voice coil motor (VCM). In particular, in accordance with various aspects, the present disclosure relates to the use of a USM that includes a ring-shaped piezoelectric element engineered to produce a traveling wave that actuates the rotation of a hub such as an E-block used in an HDD actuator stack. Such designs may be lighter weight, more cost-effective, more compact, and lower power than VCMs.
Source: PTBLXML, file of 2026-10-13 (ipgb20261013.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Seagate Technology LLC 4,936 patents | US company or organization | Fremont, CA | PTBLXML, file of 2026-10-13 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Than Zaw Myint | Singapore, SG | 8 | PTBLXML, file of 2026-10-13 | |
| Xiong Liu | Singapore, SG | 201 | PTBLXML, file of 2026-10-13 | |
| Shi Wei Brendon Leong | Singapore, SG | PTBLXML, file of 2026-10-13 | ||
| Yichao Ma | Singapore, SG | 21 | PTBLXML, file of 2026-10-13 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G11B | Information storage based on relative movement between record carrier and transducer | G11B19/2009 | PTBLXML, file of 2026-10-13 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.