US4755823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyless vehicle entry apparatus
Assignee: Toyota Motor Corp
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Filing: 1986-08-04
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Granted: 1988-07-05
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Expires: 2006-08-04
Abstract
Abstract A keyless entry apparatus for locking and unlocking a door, trunk lid, and window of a vehicle uses electric waves radiated from a transmitter which are received by a pickup which is provided on a vehicle body in a concealed state without any external exposure which would impair the aesthetic appearance of the vehicle body. The pickup consists of a loop antenna or an electrostatic detection antenna which detects the surface currents induced on the vehicle body by the electric waves radiated from the transmitter. The pickup is disposed at a portion on which the surface currents are concentrated such as, for example, a front pillar, trunk lid and roof.
Inventors
- 👤 Junzo Ohe
- 👤 Hiroshi Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:49
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/27; H01Q1/32; H01Q1/325; H01Q1/3275; G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00182; H01Q1/3208; H01Q1/3233; H01Q1/3241; H01Q1/3291; G07C2009/00753; G07C2009/00769; G07C2009/00793
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A keyless vehicle entry apparatus for automatically operating a device on a vehicle body by receiving a code signal of high frequency electric waves transmitted from a transmitter, said apparatus comprising: at least one high frequency pickup means for detecting high frequency surface currents induced on a vehicle body by the high frequency electric waves transmitted by the transmitter and for outputting a detection signal; mounting means for mounting said at least one high frequency pickup means adjacent to at least one marginal edge portion of the vehicle body; receiving means including a decoder for receiving and decoding the outputted detection signal from said high frequency pickup means and for outputting a control signal for operating the device on the vehicle body.
Claim 2
Dependent Claim
122 words
A keyless vehicle entry apparatus for automatically operating a device on a vehicle body by receiving a code signal of high frequency electric waves transmitted from a transmitter, said apparatus comprising: at least one high frequency pickup means for detecting high frequency surface currents induced on a vehicle body by the high frequency electric waves transmitted by the transmitter and for outputting a detection signal; mounting means for mounting said at least one high frequency pickup means adjacent to at least one marginal edge portion of the vehicle body; receiving means including a decoder for receiving and decoding the outputted detection signal from said high frequency pickup means and for outputting a control signal for operating the device on the vehicle body.
Claim 3
Dependent Claim
23 words
An apparatus according to claim 1, said at least one high frequency pickup means being longitudinally provided on at least one front pillar.
Claim 4
Dependent Claim
27 words
An apparatus according to claim 1, said at least one high frequency pickup means being longitudinally provided on at least one peripheral edge of an engine hood.
Claim 5
Dependent Claim
27 words
An apparatus according to claim 1, said at least one high frequency pickup means being longitudinally provided on at least one peripheral edge of a trunk lid.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 1, said at least one high frequency pickup means being longitudinally provided on at least one peripheral edge of a roof.
Claim 7
Dependent Claim
28 words
The apparatus according to claim 1, the device on the vehicle being a door lock mechanism which is automatically locked and unlocked by said keyless vehicle entry appratus.
Claim 8
Dependent Claim
33 words
An apparatus according to claim 1, said at least one high frequency pickup means comprising two high frequency pickup means longitudinally disposed on respective front pillars on both sides of the vehicle body.
Claim 9
Dependent Claim
32 words
An apparatus according to claim 1, said at least one high frequency pickup means comprising two high frequency pickup means disposed along a peripheral edge of a roof of said vehicle body.
Claim 10
Dependent Claim
46 words
An apparatus according to claim 1, said at least one high frequency pickup means comprising two high frequency pickup means with one disposed on a front pillar and the other disposed at a central portion of a rear end of a roof of the vehicle body.
Claim 11
Dependent Claim
49 words
An apparatus according to claim 1, said at least one high frequency pickup means comprising two high frequency pickup means with one disposed in proximity to a side edge of a front roof and the other disposed on a trunk hinge on the same side as said side edge.
References Cited (Backward Citations)
JPS5334826A
Cited
GB2018482A
Cited
GB2051442A
Cited
JPS60172804A
Cited
EP0181120A2
Cited
EP0180462A2
Cited
EP0184447A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |