Photographic apparatus gear train having a unique set of gears
US4051492A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1976 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Jan 13, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19972
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A pair of meshing gears, having unique tooth profiles, are provided in a separable gear train which is usable in a self-developing camera to couple a motor in one housing section of the camera to at least one of a pair of pressure-applying rollers mounted on a second camera housing section that is pivotally coupled to the first section for movement between positions blocking and unblocking access to a film container receiving section in the first housing section. The pair of gears have a speed ratio of other than 1:1 and equal tip spacing to facilitate bringing the pair of gears into operative mesh when the second housing section is moved to the operative blocking position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.