Patent US3568334A successfully refreshed from Google Patents.
US3568334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring the physiological reaction time to a visual or acoustic stimulus
Assignee: Srl CAEM Ltd CO
•
Filing: 1968-06-11
•
Granted: 1971-03-09
•
Expires: 1988-06-11
Abstract
Abstract A DEVICE FOR TESTING THE REACTION TIME OF AN INDIVIDUAL INCLUDING A ROTARY BODY ROTATABLE ABOUT AN AXIS SPACED SOMEWHAT FROM ITS CENTER OF GRAVITY. TIMER OPERATED RELEASE MEANS HOLDS THE BODY IN A POSITION OF UNSTABLE EQUILIBRIUM UNTIL SUCH TIME AS A VISUAL OR ACOUSTIC SIGNAL IS RENDERED WHEN THE BODY IS RELEASED. A POINTER INTERGRAL WITH THE BODY AXLE REGISTERS THE ANGLE OF ROTATION AND HENCE THE TIME INTERVAL OF ROTATION WHEN THE BODY IS STOPPED BY A MANUALLY OPERATED BRAKE.
Inventors
- 👤 Pietrangelo Gregorio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:40
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/16; A61B5/162
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |