US5387957A — Simplified trigger, shutter and film advance syst…

Claim 1

Independent Claim 101 words

A camera using film, comprising a housing defining a track for receiving the film having consecutive first, second and third positions; a shutter slidable in said housing adjacent said track and having a push plate; a trigger movably mounted in said housing including an arm constructed and arranged with said housing to advance from said first position, through said second position, to said third position, said arm extending to engage the push plate and a sprocket hole in the film at said first position, releasing the sprocket hole at said second position, and disengaging the push plate at said third position.

Claim 2

Dependent Claim 101 words

A camera using film, comprising a housing defining a track for receiving the film having consecutive first, second and third positions; a shutter slidable in said housing adjacent said track and having a push plate; a trigger movably mounted in said housing including an arm constructed and arranged with said housing to advance from said first position, through said second position, to said third position, said arm extending to engage the push plate and a sprocket hole in the film at said first position, releasing the sprocket hole at said second position, and disengaging the push plate at said third position.

Claim 3

Dependent Claim 27 words

The camera of claim 1, further comprising a spring coupled to said housing and to said shutter, and adapted to return said shutter to said first position.

Claim 4

Dependent Claim 31 words

The camera of claim 1, further comprising a first and second guide in said film track, a raised platform in said film track extending to between said first and second guides.

Claim 5

Dependent Claim 25 words

The camera of claim 3, further comprising said guides and said platform defining said film track such that the film is held against said platform.

Claim 6

Dependent Claim 13 words

The camera of claim 1, further comprising a bend in said film track.

Claim 7

Dependent Claim 27 words

The camera of claim 1, further comprising a lens located in said housing; a light baffle located between said lens and said shutter adjacent said second position.

Claim 8

Dependent Claim 21 words

The camera of claim 1, further comprising a ramp adapted to engage said arm thereby releasing said film and said shutter.

Claim 9

Dependent Claim 175 words

A camera using film, comprising a housing including an aperture and lens, an initial storage area where unexposed film is stored, and a second storage area for receiving film at least part of which has been exposed; a film track; a shutter slidable in said housing between an original position and an advanced position, adjacent to said film track; a spring fixedly coupled to said housing and movably coupled to said shutter, and adapted to return said shutter to an original position; a trigger movably mounted in said housing including a trigger button which protrudes from the housing for pressing by the operator, a trigger point to engage and advance the film and said shutter; a ramp fixedly coupled to the housing which engages said trigger to cause the trigger point to disengage the film and said shutter; wherein upon the operator pressing the trigger button, the trigger point advances the film and said shutter until said trigger engages said ramp at which time said shutter returns to its original position thereby exposing the film.

Claim 10

Dependent Claim 175 words

A camera using film, comprising a housing including an aperture and lens, an initial storage area where unexposed film is stored, and a second storage area for receiving film at least part of which has been exposed; a film track; a shutter slidable in said housing between an original position and an advanced position, adjacent to said film track; a spring fixedly coupled to said housing and movably coupled to said shutter, and adapted to return said shutter to an original position; a trigger movably mounted in said housing including a trigger button which protrudes from the housing for pressing by the operator, a trigger point to engage and advance the film and said shutter; a ramp fixedly coupled to the housing which engages said trigger to cause the trigger point to disengage the film and said shutter; wherein upon the operator pressing the trigger button, the trigger point advances the film and said shutter until said trigger engages said ramp at which time said shutter returns to its original position thereby exposing the film.

Claim 11

Independent Claim 75 words

A method for exposing film comprising the steps of advancing a shutter in a shutter track from a first position, through a second position, to a third position using a substantially unitary trigger; advancing film in a film track adjacent the shutter track nearly simultaneously with said step of advancing the shutter using the trigger; releasing the film from the trigger at the second position; disengaging the shutter from the trigger at the third position.

Claim 12

Independent Claim 75 words

A method for exposing film comprising the steps of advancing a shutter in a shutter track from a first position, through a second position, to a third position using a substantially unitary trigger; advancing film in a film track adjacent the shutter track nearly simultaneously with said step of advancing the shutter using the trigger; releasing the film from the trigger at the second position; disengaging the shutter from the trigger at the third position.

Claim 13

Dependent Claim 117 words

A camera using film comprising a housing defining a track for receiving the film having consecutive first, second and third positions; a shutter slidable in said housing along said track and having a push plate; a substantially unitary trigger movably mounted in said housing having an arm constructed and arranged with said housing to advance from said first position, through said second position, to said third position, said arm extending to engage the push plate and a sprocket hole in the film at said first position, releasing the sprocket hole at said second position, and releasing the push plate at said third position, at which time the shutter returns to said first position thereby exposing the film.

Claim 14

Dependent Claim 117 words

A camera using film comprising a housing defining a track for receiving the film having consecutive first, second and third positions; a shutter slidable in said housing along said track and having a push plate; a substantially unitary trigger movably mounted in said housing having an arm constructed and arranged with said housing to advance from said first position, through said second position, to said third position, said arm extending to engage the push plate and a sprocket hole in the film at said first position, releasing the sprocket hole at said second position, and releasing the push plate at said third position, at which time the shutter returns to said first position thereby exposing the film.

Claim 15

Dependent Claim 14 words

The camera of claim 10, further comprising a ramp adapted to engage said arm.

Claim 16

Dependent Claim 25 words

The method of claim 9 further comprising the step of returning the shutter from the third position to the first position thereby exposing the film.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1998-02-06	1998-08-08	1999-02-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2002-02-06	2002-08-08	2003-02-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2006-02-06	2006-08-08	2007-02-07	$7700.00	Window Closed / Lapsed

Simplified trigger, shutter and film advance system such as for use in a camera

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