US3810322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calendar display device
Assignee: Individual
•
Filing: 1972-10-13
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Granted: 1974-05-14
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Expires: 1992-10-13
Abstract
Abstract A calendar display device comprising a housing, a multi-month calendar formed of a sheet of light-transmitting material extending between dispensing and take-up spools to display the appropriate month through an opening in the housing, a plurality of lamps positioned behind the calendar sheet for selectively illuminating individual days of the month, circuit means for sequentially energizing the lamps in a pattern corresponding to the calendar days, control means including means for automatically advancing the calendar sheet at the end of each month to display the calendar of the subsequent month and means for conditioning the circuit means for sequential energization of the lamps in a pattern corresponding to the arrangement of days of the newly displayed monthly calendar.
Inventors
- 👤 E Ritchie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:18
CPC Classifications
G; G04; G04C; G04C17/00; G04C17/0075; G04C17/0083
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
In an automatic, clock-driven calendar having a first day display device continuously driven at a relatively low speed for indicating the day of the month and a second month display device intermittently driven at a relatively high speed by an incremental amount for indicating the month of the year, wherein the improvement resides in means for driving a control assembly which is operatively connected to said month display device for programming operation thereof, comprising a rotary member, contact means fixedly mounted and in operative relation to the rotary member and connected to the day display device for operation thereof, a plurality of switching devices engagable with the contact means for controlling said operation of the day display device, a plurality of switch actuators rotatably mounted on said rotary member and carrying said switching devices for sequential engagement of selected ones of said contact means, incremental drive means electrically connected to the day display device for rotation of the switch actuators simultaneously with operation of the month display device to actuate the switching devices, and annual reset means responsive to rotation of said switch actuators by a predetermined amount for incrementally advancing the rotary member to effect actuation of the switching devices and additional operation of the day display device, whereby the day display device is automatically reset each year.
Claim 2
Dependent Claim
219 words
In an automatic, clock-driven calendar having a first day display device continuously driven at a relatively low speed for indicating the day of the month and a second month display device intermittently driven at a relatively high speed by an incremental amount for indicating the month of the year, wherein the improvement resides in means for driving a control assembly which is operatively connected to said month display device for programming operation thereof, comprising a rotary member, contact means fixedly mounted and in operative relation to the rotary member and connected to the day display device for operation thereof, a plurality of switching devices engagable with the contact means for controlling said operation of the day display device, a plurality of switch actuators rotatably mounted on said rotary member and carrying said switching devices for sequential engagement of selected ones of said contact means, incremental drive means electrically connected to the day display device for rotation of the switch actuators simultaneously with operation of the month display device to actuate the switching devices, and annual reset means responsive to rotation of said switch actuators by a predetermined amount for incrementally advancing the rotary member to effect actuation of the switching devices and additional operation of the day display device, whereby the day display device is automatically reset each year.
Claim 3
Dependent Claim
85 words
The combination of claim 1 wherein said switch actuators include a plurality of planet pinions, a drive year drivingly connected to said planet pinions, ratchet means engageable with the drive gear for imparting rotation to the planet pinions while the rotary member is stationary, said planet pinions being rotated in response to advancement of the rotor relative to the drive gear, and mounting means connecting the switching devices to the planet pinions for projection radially from the rotary member into engagement with the contact means.
Claim 4
Dependent Claim
41 words
The combination of claim 2 wherein each of said switching devices comprises a rotary switch member connected to one of the planet pinions and projecting peripherally beyond the rotor, and at least one contact bridging element mounted on the switch member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |