Photography – With object illumination for exposure – Having exposure synchronizer
Patent
1997-03-13
1998-02-24
Gray, David M.
Photography
With object illumination for exposure
Having exposure synchronizer
396 6, 396493, G03B 1726
Patent
active
057219850
ABSTRACT:
A shutter and flash synchronization assemblage comprising a flash circuit board having a shutter-flash synchronization contact, an electrically conductive shutter blade supported for movement between a lens covering position spaced from the synchronization contact and a lens uncovering position in abutment with the synchronization contact to establish a temporary conductive connection between the flash circuit board and the shutter blade, and an electrically conductive return spring interconnecting the flash circuit board and the shutter blade to establish a permanent conductive connection between the flash circuit board and the shutter blade and to urge the shutter blade to its lens covering position, is characterized in that the return spring is a non-conductive substance which is elastic to urge the shutter blade to its lens covering position and which is provided with a plurality of electrically conductive cross-woven strands to establish the permanent conductive connection between the flash circuit board and the shutter blade.
REFERENCES:
patent: 3640195 (1972-02-01), Zimmerman et al.
patent: 3752050 (1973-08-01), Wolfe
patent: 4660951 (1987-04-01), Reed et al.
Eastman Kodak Company
Fields Roger A.
Gray David M.
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