초록 ▼

A locking device for use in a processing device for processing photosensitive material such as photographic film has a light-shield cover that can be unlocked without moving a knob plate. The knob plate has an engaging member for locking the light-shield cover. An unlocking mechanism is provided to

A locking device for use in a processing device for processing photosensitive material such as photographic film has a light-shield cover that can be unlocked without moving a knob plate. The knob plate has an engaging member for locking the light-shield cover. An unlocking mechanism is provided to unlock the light-shield cover without moving the knob plate. The unlocking mechanism has a pushing head, and an unlocking lever having a tip engageable with the engaging member and adapted to be pushed by the pushing head. By moving the unlocking lever with the pushing head until its tip disengages from the engaging member, the engaging member can pass through a cutout, so that the light-shield cover can be unlocked and opened.

대표청구항 ▼

[ What is claimed is:] [1.] A locking device for use in locking a cover in a closed position relative to a device, said locking device comprising:a knob to be mounted on the cover for movement relative thereto between first and second positions;a first lock including a first engaging member connecte

[ What is claimed is:] [1.] A locking device for use in locking a cover in a closed position relative to a device, said locking device comprising:a knob to be mounted on the cover for movement relative thereto between first and second positions;a first lock including a first engaging member connected to said knob and a second engaging member to be coupled to the device, said second engaging member being movable between a locking position engaging said first engaging member when said knob is in said first position, thereby locking the cover in the closed position, and an unlocking position out of engagement with said first engaging member;a second lock operably positioned to lock said knob in said first position and to prevent movement of said knob toward said second position, thereby maintaining engagement of said first and second engaging members when said second engaging member is in said locking position; andan unlocking mechanism operably positioned to move said second engaging member to said unlocking position and thereby to disengage said second engaging member from said first engaging member, thereby enabling the cover to be moved to the open position when said knob is locked in said first position by said second lock.