Patents
US 9521890 B2: Hair styling iron with timer
- Granted
- 2016-12-20
- Filed
- 2016-01-18 application 14997677
- Type
- Utility · 13 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A hair styling iron includes a handle to which a barrel is mounted, a heating element in the barrel, a rotary drive including a motor that rotates the barrel, a control circuit including a timer, and a momentary drive switch which is user actuable and connected to the control circuit for control of the motor. Actuation of the drive switch must be maintained to operate the rotary drive. The control circuit monitors at least one change of state of the drive switch to determine a starting time, and actuates an alarm after an elapsed time measured from the starting time. The elapsed time is calculated by the control circuit in direct proportion to an angle of rotation of the barrel relative to the handle that occurs between a first actuation of the drive switch and release of the drive switch immediately following the first actuation of the drive switch.
Source: PVGPATDIS, file of 2026-04-10 (ipg161220.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| KENFORD INDUSTRIAL COMPANY LTD. 40 patents | Foreign company or organization | Hong Kong, CN | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Wai Ming Lam | Hong Kong, CN | 3 | PVGPATDIS, file of 2026-04-10 | |
| Wai Ho Michael Keong | Hong Kong, CN | 18 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A45D | Hairdressing or shaving equipment ; equipment for cosmetics or cosmetic treatments, e.g. for manicuring or pedicuring | A45D1/04 | PVGPATDIS, file of 2026-04-10 |
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.