US PATENT SUBCLASS 968 / 231
.~ Alarm clocks (electrically released alarm signals subclass 580; waking up by electric lamps subclass 578; by other means subclass 244; alarm clocks with electric contacts subclass 608) [G04B 23/02]


Current as of: June, 1999
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968 /   HD   HOROLOGY

229  DD  ARRANGEMENTS PRODUCING ACOUSTIC SIGNALS AT PRESELECTED TIMES (optical time indicating subclass 139, 564, and 577; indicating by acoustic means subclass 217; indicating time by means other than acoustic or optical or by a combination of means subclass 243; acoustic time signals produced electrically subclass 580; coin-freed alarm clocks G07F 17/00B; acoustic signalling means G08B 3/00) [G04B 23/00] {2}
231.~ Alarm clocks (electrically released alarm signals subclass 580; waking up by electric lamps subclass 578; by other means subclass 244; alarm clocks with electric contacts subclass 608) [G04B 23/02] {11}
232  DD  .~.~> Controls, e.g., winding up the alarm, adjusting and indicating the waking time, etc. [G04B 23/02B]
233  DD  .~.~> Stopping means [G04B 23/02C]
234  DD  .~.~> Driving, e.g., by springs or common drive with the clockwork, etc.; gears; escapements (escapements in general subclass 95; regulating means for clockworks in general subclass 103) [G04B 23/02D]
235  DD  .~.~> Signal triggering (in alarm clocks which deliver also or only nonacoustic signals subclass 244) [G04B 23/02F]
236  DD  .~.~> Hammer driving; hammers; devices with several hammers or sounding bodies; vibrators [G04B 23/02G]
237  DD  .~.~> Sounding bodies; boxes used as sounding cases; fixation on or in the case (sounding bodies subclass 225; case enhancing transmission of sound waves subclass 303) [G04B 23/02H]
238  DD  .~.~> With coarse and fine setting of the preselected times [G04B 23/04]
239  DD  .~.~> Adjustable for several preselected times with automatic stopping of the signal [G04B 23/06]
240  DD  .~.~> Operating on successive days without resetting; operating only once in each 24 hours [G04B 23/08]
241  DD  .~.~> With pre-signal; with repeated signal; with changeable intensity of sound [G04B 23/10]
242  DD  .~.~> Alarm watches to be worn in pockets or on the wrist (giving signals by stimulating the skin subclass 246) [G04B 23/12]