US4750118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coding system for multiple transmitters and a single receiver for a garage door opener
Assignee: The Chamberlain Group LLC
•
Filing: 1985-10-29
•
Granted: 1988-06-07
•
Expires: 2005-10-29
Abstract
Abstract The present invention comprises a system for remote control of garage doors and other devices wherein an extremely large number of codes are available for remote transmitters for operating the garage operator and wherein each transmitter has its own unique and permanent nonuser changeable code. The receiver at the garage door operator is capable of storing and remembering a number of different codes corresponding to different transmitters such that the receiver can be programmed so as to actuated by more than one transmitted code thus allowing two or more transmitters to actuate the same garage door operator and wherein the receiver stores the valid codes for the different transmitters.
Inventors
- 👤 Carl Heitschel
- 👤 Colin Willmott
- 👤 Wayne Schindler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:10
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00817; E; E05; E05F; E05F15/00; E05F15/40; E05F15/41; E05F15/60; E05F15/603; E05F15/665; E05F15/668; E05F15/70; E05F15/77; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/042; G05B19/0423; G05B19/0425; G07C9/00182; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/106; G07C2009/00753; G07C2009/00769; G07C2009/00793; G07C2009/00825; G07C2009/00849; G07C9/00896; G07C2009/00928
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
237 words
A garage door operator for a garage door comprising, a garage door operation mechanism with an output shaft connected to said garage door to open and close it, a radio receiver, a decoder connected to receive the output of said radio receiver, a microprocessor connected to receive the output of said decoder and to said garage door operation mechanism to energize it, a switch moveable between program and operate positions connected to said microprocessor to place said microprocessor in the operate or the program mode, a memory means for storing a plurality of addresses connected to said microprocessor when said switch is in the program position, a memory selection switch connected to said microprocessor, a plurality of radio transmitters with different codes, said memory selection switch setable in a first position at a time when a first one of said radio transmitters is energized so that the code of said first transmitter will be stored in said memory means and said memory selection switch setable in a second position at a time when a second one of said radio transmitters is energized so that the code of said second transmitter will be stored in said memory means, and said microprocessor placed in the operate mode when said switch is in the operate position so that either or both of said first and second radio transmitters when energized cause said microprocessor to energize said garage door operator mechanism.
Claim 2
Dependent Claim
237 words
A garage door operator for a garage door comprising, a garage door operation mechanism with an output shaft connected to said garage door to open and close it, a radio receiver, a decoder connected to receive the output of said radio receiver, a microprocessor connected to receive the output of said decoder and to said garage door operation mechanism to energize it, a switch moveable between program and operate positions connected to said microprocessor to place said microprocessor in the operate or the program mode, a memory means for storing a plurality of addresses connected to said microprocessor when said switch is in the program position, a memory selection switch connected to said microprocessor, a plurality of radio transmitters with different codes, said memory selection switch setable in a first position at a time when a first one of said radio transmitters is energized so that the code of said first transmitter will be stored in said memory means and said memory selection switch setable in a second position at a time when a second one of said radio transmitters is energized so that the code of said second transmitter will be stored in said memory means, and said microprocessor placed in the operate mode when said switch is in the operate position so that either or both of said first and second radio transmitters when energized cause said microprocessor to energize said garage door operator mechanism.
Claim 3
Dependent Claim
73 words
A garage door operator for a garage door according to claim 1 wherein said first and second radio transmitters when energized radiate coded signals and said microprocessor receives and compares coded signals from said first and second transmitters with coded signals stored in said memory means and said microprocessor produces a garage door operate signal if the received transmitted signal and any one of said coded signals stored in said memory means match.
Claim 4
Dependent Claim
42 words
A garage door operator according to claim 2 wherein said memory selection switch has "n" positions where "n" is an integer and the codes of "n" transmitters can be stored in said memory means when said switch is in the program mode.
Claim 5
Dependent Claim
51 words
A garage door operator according to claim 3 wherein the code stored in said memory means can be changed by placing said switch in the program mode and one of said plurality of transmitters is energized which has a code which differs from the code previously stored in said memory means.
References Cited (Backward Citations)
US29525A
Cited
USRE29525E
Cited
US4385296A
Cited
US4328540A
Cited
US4305060A
Cited
US4464651A
Cited
US4602357A
Cited
US4581606A
Cited
US4529980A
Cited
US4491774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-07 | 1991-12-07 | 1992-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-07 | 1995-12-07 | 1996-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-07 | 1999-12-07 | 2000-06-07 | $7700.00 | Window Closed / Lapsed |