Keyless entry system for automotive devices antenna device allow

Details Keyless entry system for automotive devices antenna device allow Keyless entry system for automotive devices antenna device allow

1986-02-21

1990-11-27

Weldon, Ulysses

Communications: electrical

Continuously variable indicating

With meter reading

307 102, 34082572, 361172, G08C 1900, H02K 4400

Patent

active

049739581

ABSTRACT:
A keyless entry system employs a pocket-portable radio signal transmitter to be carried by a user and a controller mounted on a vehicle and associated with a vehicle device, such as a door lock mechanism, a trunk lid opener, a window regulator, a steering lock device and so forth, to be operated. Radio signal communication between the transmitter and the controller is performed by electromagnetic induction. According to the present invention, electromagnetic induction is caused between antennas in the transmitter and the controller. In order to provide wide communication area, at least the antenna of the controller serves as a transformer to generate higher loop current for generating sufficiently strong magnetic field therearound.

REFERENCES:
patent: 3196440 (1965-07-01), Weinstein
patent: 3587051 (1971-06-01), Hovey
patent: 3593816 (1971-07-01), Kazaoka
patent: 3633167 (1972-01-01), Hedin
patent: 3641396 (1972-02-01), Kossen et al.
patent: 3656098 (1972-04-01), Duren et al.
patent: 3670275 (1972-06-01), Kalliomaki et al.
patent: 3697943 (1972-10-01), Andres
patent: 3703714 (1972-11-01), Andrews
patent: 3710316 (1973-01-01), Kromer
patent: 3723967 (1973-03-01), Atkins et al.
patent: 3751718 (1973-08-01), Hanchett, Jr.
patent: 3754164 (1973-08-01), Zorzy
patent: 3754213 (1973-08-01), Morroni et al.
patent: 3764859 (1973-10-01), Wood et al.
patent: 3781854 (1973-12-01), Kaufman et al.
patent: 3812403 (1974-05-01), Gartner
patent: 3830332 (1974-08-01), Fontaine
patent: 3831065 (1974-08-01), Martin et al.
patent: 3859624 (1975-01-01), Kriofsky et al.
patent: 3866168 (1975-02-01), McGuirk, Jr.
patent: 3871474 (1975-03-01), Tomlinson et al.
patent: 3878511 (1975-04-01), Wagner
patent: 3885408 (1975-05-01), Clark, Jr.
patent: 3891980 (1975-06-01), Lewis et al.
patent: 3953769 (1976-04-01), Sopko
patent: 4004273 (1977-01-01), Kalogerson
patent: 4100534 (1978-07-01), Shifflet, Jr.
patent: 4114147 (1978-09-01), Hile
patent: 4129855 (1978-12-01), Rodrian
patent: 4137985 (1979-02-01), Winchell
patent: 4142097 (1979-02-01), Ulch
patent: 4143368 (1979-03-01), Route et al.
patent: 4148092 (1979-04-01), Martin
patent: 4160240 (1979-07-01), Partipilo
patent: 4189712 (1980-02-01), Lemelson
patent: 4196347 (1980-04-01), Hadley
patent: 4205300 (1980-05-01), Ho et al.
patent: 4205325 (1980-05-01), Haygood et al.
patent: 4206491 (1980-06-01), Ligman et al.
patent: 4222088 (1980-09-01), Burton
patent: 4223296 (1980-09-01), Kim et al.
patent: 4232354 (1980-11-01), Mueller et al.
patent: 4233642 (1980-11-01), Ellsberg
patent: 4240516 (1980-12-01), Henderson et al.
patent: 4249161 (1981-02-01), Mohnhaupt
patent: 4249245 (1981-02-01), Nakanishi et al.
patent: 4291237 (1981-09-01), Kitano
patent: 4309674 (1982-01-01), Owen
patent: 4317157 (1982-02-01), Eckloff
patent: 4327255 (1982-04-01), Suszylo
patent: 4332305 (1982-06-01), Kocolowski
patent: 4354189 (1982-10-01), Lemelson
patent: 4388524 (1983-06-01), Walton
patent: 4418416 (1983-11-01), Lese et al.
patent: 4447808 (1984-05-01), Marcus
patent: 4450431 (1984-05-01), Hochstein
patent: 4471343 (1984-09-01), Lemelson
patent: 4473825 (1984-09-01), Walton
patent: 4477806 (1984-10-01), Mochida et al.
patent: 4479255 (1984-10-01), Geesen et al.
patent: 4486806 (1984-12-01), Mochida et al.
patent: 4509093 (1985-04-01), Stellberger
patent: 4511946 (1985-04-01), McGahan
patent: 4535333 (1985-08-01), Twardowski
patent: 4550444 (1985-10-01), Uebel
patent: 4554542 (1985-11-01), Dolikian
patent: 4578314 (1986-03-01), Ohta et al.
patent: 4595902 (1986-06-01), Proske et al.
patent: 4598275 (1986-07-01), Ross et al.
patent: 4619002 (1986-10-01), Thro
patent: 4630044 (1986-12-01), Polzer
patent: 4670746 (1987-06-01), Taniguchi et al.
patent: 4672375 (1987-06-01), Mochida et al.
patent: 4688036 (1987-08-01), Hirano et al.
patent: 4703714 (1987-11-01), Bajka et al.

Affiliated with

Also associated with

Rating

Keyless entry system for automotive devices antenna device allow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyless entry system for automotive devices antenna device allow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyless entry system for automotive devices antenna device allow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1034508