GB1340116A - Flip flop driver for dc bell - Google Patents

Flip flop driver for dc bell

Info

Publication number
GB1340116A
GB1340116A GB3253271A GB3253271A GB1340116A GB 1340116 A GB1340116 A GB 1340116A GB 3253271 A GB3253271 A GB 3253271A GB 3253271 A GB3253271 A GB 3253271A GB 1340116 A GB1340116 A GB 1340116A
Authority
GB
United Kingdom
Prior art keywords
bell
striker
flip flop
energized
july
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3253271A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edwards Co Inc
Original Assignee
Edwards Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Edwards Co Inc filed Critical Edwards Co Inc
Publication of GB1340116A publication Critical patent/GB1340116A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/062—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated
    • G10K1/063—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube electrically operated the sounding member being a bell
    • G10K1/064—Operating or striking mechanisms therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Pinball Game Machines (AREA)

Abstract

1340116 Bells EDWARDS CO Inc 12 July 1971 [10 July 1970] 32532/71 Heading G5J The striker 14 of a bell is driven by an electromagnet 15 energized by a free running asymmetric multivibrator circuit (Fig. 2) carried on a printed circuit board 20. The output transistor T3 is energized for approximately 40% of the time, which is sufficient to drive the striker towards the gong 12, and the multivibrator frequency is adjusted to coincide with the natural resonant frequency of the spring 19. The supporting plate 17 is adjustable at 18 to allow for the throw of the striker.
GB3253271A 1970-07-10 1971-07-12 Flip flop driver for dc bell Expired GB1340116A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5375270A 1970-07-10 1970-07-10

Publications (1)

Publication Number Publication Date
GB1340116A true GB1340116A (en) 1973-12-12

Family

ID=21986301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3253271A Expired GB1340116A (en) 1970-07-10 1971-07-12 Flip flop driver for dc bell

Country Status (2)

Country Link
CA (1) CA923738A (en)
GB (1) GB1340116A (en)

Also Published As

Publication number Publication date
CA923738A (en) 1973-04-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee