Shutter release mechanism
US4119987A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 16, 1977 |
| Grant date | Oct 10, 1978 |
| Priority date | — |
| Expiry date | May 16, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a camera, a shutter release member is pivotally connected to a motion transmitting lever between respective end portions of the lever. One end portion of the lever normally contacts a removable fulcrum, and the other end portion contacts a restraining member provided for a shutter drive member. To initiate shutter actuation for picture-taking, the shutter release member is manually depressed to swing the lever about the removable fulcrum. The swinging lever moves the restraining member from a restraining position to a releasing position, freeing the drive member to actuate the camera shutter. To prevent unintended shutter actuation by inadvertently depressing the shutter release member, the fulcrum is removed from the lever. Then, manual depression of the shutter release member swings the lever about the restraining member, which is spring held in its restraining position to serve as an alternate fulcrum for the lever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.