Camera
US4992821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Aug 7, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/425
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera includes a film feeding mechanism for feeding a film to take an exposure on a next frame, a charging mechanism, a focusing mechanism, a first actuator serving as a drive source for driving the film feeding mechanism, a second actuator serving as a drive source for driving the charging mechanism, a third actuator serving as a drive source for driving the focusing mechanism, a voltage detecting circuit for detecting a voltage of a power source, and a control circuit for controlling the first, second and third actuators, the control circuit permitting, when the voltage of the power source detected by the voltage detecting circuit has a value not less than a predetermined value, the third actuator to operate when the first actuator is in process of operating, and the control circuit prohibiting, when the voltage of the power source detected by the voltage detecting circuit has a value less than the predetermined value, the third actuator from operating when the first actuator and the second actuator are in process of operating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.