Patent ID: 6301445
Filing Date: 2001-10-09
Classification: G03B

Abstract:
A dual wheel exposure counter comprising a rotatable tenths counter wheel having a series of at least two spaced units, and a rotatable unit counter wheel having a series of ten spaced units and a rotating member which rotates said tenths counter wheel to change by one unit when said unit counter wheel is rotated to change by ten units, is characterized in that:a retaining member engages said tenths counter wheel to prevent rotation of said tenths counter wheel and can be moved temporarily out of engagement with said tenths counter wheel to permit said tenths counter wheel to be rotated to change by one unit; andsaid unit counter wheel includes an actuating member separate from said rotating member that moves said retaining member temporarily out of engagement with said tenths counter wheel when said unit counter is rotated to change by ten units, whereby said rotating member can then rotate said tenths counter wheel to change by one unit.