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US3581637A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for igniting percussion-ignitable flash lamps

Assignee: Eastman Kodak Co
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Filing: 1968-10-14
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Granted: 1971-06-01
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Expires: 1988-10-14
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Abstract

Abstract A device is provided for igniting a percussion-ignitable flashlamp in use with photographic apparatus such as a camera, the device comprising a socket to receive a flash unit including a percussion-ignitable lamp, an actuating member movable into contact with such a unit received in the socket to ignite the lamp, and electromagnetic means, such as a solenoid, for effecting movement of the actuating member into contact with the unit, so that the lamp is ignited in response to energization of the electromagnetic means. The device may be connected to the photographic apparatus or it may be located remotely from the apparatus and used as a slave flash device. The electromagnetic means may be energized by electrical energy received through electrical conductors connected to the apparatus or by signal energy, such as light, radio frequency energy, or a sonic signal, transmitted from the apparatus. The electromagnetic means may move the actuating member directly into contact with the flash unit or it may release the actuating member for movement by a spring or other biasing means into contact with the unit. The actuating member may percussively contact the lamp itself or it may contact a striking member on the received flash unit to move the striking member into percussive contact with the lamp. The socket of the device may be adapted to receive a multilamp flash unit having a plurality of percussion-ignitable flash lamps, and means may be provided in the device for rotating such a socket in response to energization of the electromagnetic means. The socket may conveniently be adapted to receive alternatively a percussion-ignitable flashlamp unit and an electrically ignitable flashlamp unit, in which case a pair of electrical contacts connected electrically in parallel with the electromagnetic means and connectable to an electrically ignitable flashlamp of a unit received in the socket may be provided to effect ignition of an electrically ignitable lamp in response to energization of the electromagnetic means.

Inventors

  • 👤 Donald M Harvey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 10:02
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/04; G03B15/0478; G03B15/0494

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 156 words
An adapter to enable the use of a first type of flash unit having at lest one lamp ignitable by the application of mechanical force to the unit with a photographic apparatus having a socket and electrical circuit for receiving and actuating a secOnd type of flashlamp unit having at least one lamp ignitable electrically, said adapter including: means for receiving a flash unit of the first type; means movable from a first position to a second position for applying a mechanical force to a unit of the first type received by said receiving means; support means receivable by said socket of said photographic apparatus for removably attaching said adapter to said photographic apparatus; electromagnetic means energizeable to move said force applying means from said first position to said second position; and circuit means for connecting said electromagnetic means into the electrical circuit of said photographic apparatus when said support means is received by said socket.
Claim 2
Dependent Claim 156 words
An adapter to enable the use of a first type of flash unit having at lest one lamp ignitable by the application of mechanical force to the unit with a photographic apparatus having a socket and electrical circuit for receiving and actuating a secOnd type of flashlamp unit having at least one lamp ignitable electrically, said adapter including: means for receiving a flash unit of the first type; means movable from a first position to a second position for applying a mechanical force to a unit of the first type received by said receiving means; support means receivable by said socket of said photographic apparatus for removably attaching said adapter to said photographic apparatus; electromagnetic means energizeable to move said force applying means from said first position to said second position; and circuit means for connecting said electromagnetic means into the electrical circuit of said photographic apparatus when said support means is received by said socket.
Claim 3
Dependent Claim 60 words
The adapter according to claim 1 wherein said receiving means is a rotatable socket adapted to receive a multilamp flash unit having a plurality of lamps ignitable by striking, and further comprising means responsive to said electromagnetic means for rotating said socket to sequentially position said lamps at a lamp firing position in response to energization of said electromagnetic means.
Claim 4
Dependent Claim 85 words
The device claimed in claim 1 wherein said rotating means includes: a. biasing means for urging said socket rotatively from a lamp-firing position to a succeeding lamp-firing position; and b. retaining means for releasably retaining said socket in a lamp-firing position in opposition to said biasing means, said retaining means being movable by said electromagnetic means, in response to energization of said electromagnetic means, to release said socket and thereby permit said socket to be rotated by said biasing means to a succeeding lamp-firing position.
Claim 5
Dependent Claim 174 words
For use with flashlamp units of a first type having at least one lamp actuatable by the application of a mechanical force to the unit, and with flashlamp units of a second type having at least one lamp actuatable by the application of electrical energy to the unit, a photographic apparatus comprising; means for interchangeably receiving both types of such flashlamp units; actuating means movable from a first position to a second position to contact and apply an actuating mechanical force to a received unit; a pair of electrical contacts positioned with respect to said receiving means to contact electrically a received unit having a lamp ignitable electrically; electrical circuit means including electromagnetic means energizeable for moving said actuating means from its first position to its second position; and means connecting said electrical contacts in parallel with said electromagnetic means whereby energization of said circuit is effective to fire either an electrical flashlamp or a flashlamp ignitable by the application of force depending upon which type of unit is received in said receiving means.
Claim 6
Dependent Claim 174 words
For use with flashlamp units of a first type having at least one lamp actuatable by the application of a mechanical force to the unit, and with flashlamp units of a second type having at least one lamp actuatable by the application of electrical energy to the unit, a photographic apparatus comprising; means for interchangeably receiving both types of such flashlamp units; actuating means movable from a first position to a second position to contact and apply an actuating mechanical force to a received unit; a pair of electrical contacts positioned with respect to said receiving means to contact electrically a received unit having a lamp ignitable electrically; electrical circuit means including electromagnetic means energizeable for moving said actuating means from its first position to its second position; and means connecting said electrical contacts in parallel with said electromagnetic means whereby energization of said circuit is effective to fire either an electrical flashlamp or a flashlamp ignitable by the application of force depending upon which type of unit is received in said receiving means.
Claim 7
Dependent Claim 86 words
Photographic apparatus comprising: means for interchangeably receiving a flashlamp unit of the type having lamps ignitable electrically and a flashlamp unit ignitable by the application of mechanical force; and an electrically energizeable circuit including: means for applying an actuating mechanical force to a unit of said second type received in said receiving means in response to energization of said circuit; and means for applying actuating electrical energy to a unit of said first type received in said receiving means in response to energization of said circuit.
Claim 8
Dependent Claim 86 words
Photographic apparatus comprising: means for interchangeably receiving a flashlamp unit of the type having lamps ignitable electrically and a flashlamp unit ignitable by the application of mechanical force; and an electrically energizeable circuit including: means for applying an actuating mechanical force to a unit of said second type received in said receiving means in response to energization of said circuit; and means for applying actuating electrical energy to a unit of said first type received in said receiving means in response to energization of said circuit.

References Cited (Backward Citations)

US590204A Cited
US668577A Cited
US2972937A Cited
US3312086A Cited
US3447435A Cited
US3400261A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-05-31 1974-11-30 1975-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-05-31 1978-11-30 1979-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-05-31 1982-11-30 1983-06-01 $7700.00 Window Closed / Lapsed

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