US5111199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pocket-portable radio code signal transmitter for automotive keyless entry system
Assignee: Nissan Motor Co Ltd
•
Filing: 1990-06-26
•
Granted: 1992-05-05
•
Expires: 2010-06-26
Abstract
Abstract A radio signal transmitter for use in an automotive keyless entry system, is resistant to damage even when subject bending stresses. The radio code transmitter has a thin housing. A substrate for a transmitter circuit is housed within the thin internal space of the housing. A plurality of circuit components making up the transmitter circuit are mounted on the substrate. The circuit components are arranged in such a manner that relatively large components are near the edges of the substrate and relatively small components are nearer the center of the substrate.
Inventors
- 👤 Takahisa Tomoda
- 👤 Mikio Takeuchi
- 👤 Kinichiro Nakano
- 👤 Motoki Hirano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:04
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/02; H04B1/03; H04B1/034; G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00944; G07C2009/00753; G07C2009/00769; G07C2009/00793; G07C9/00309
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
149 words
A pocket-portable transmitter for an automotive keyless entry system, said transmitter comprising: a substantially box-shaped housing including first parallel edge portions having a given length and second parallel edge portions having a length less than the length of said first parallel edge portions; a flexible substrate within said housing; a first group of relatively large circuit components, said first group of relatively large circuit components including a microprocessor; a second group of relatively small circuit components, said small circuit components located on central portions of said substrate, longitudinal axes of said small components being aligned perpendicular to a longitudinal axis of said substrate; and an antenna mounted on a peripheral edge wall portion of said housing, said wall portion being perpendicular to said substrate; and wherein at least one of said relatively large circuit components is located on said substrate adjacent to one of said second parallel edge portions.
Claim 2
Dependent Claim
149 words
A pocket-portable transmitter for an automotive keyless entry system, said transmitter comprising: a substantially box-shaped housing including first parallel edge portions having a given length and second parallel edge portions having a length less than the length of said first parallel edge portions; a flexible substrate within said housing; a first group of relatively large circuit components, said first group of relatively large circuit components including a microprocessor; a second group of relatively small circuit components, said small circuit components located on central portions of said substrate, longitudinal axes of said small components being aligned perpendicular to a longitudinal axis of said substrate; and an antenna mounted on a peripheral edge wall portion of said housing, said wall portion being perpendicular to said substrate; and wherein at least one of said relatively large circuit components is located on said substrate adjacent to one of said second parallel edge portions.
Claim 3
Dependent Claim
30 words
A transmitter as set forth in claim 1, wherein said housing is made of a synthetic resin and is elastically deformable in response to bending forces exerted on said housing.
Claim 4
Dependent Claim
22 words
A transmitter as set forth in claim 1, wherein said relatively large circuit components are arranged on adjacent corners of said substrate.
Claim 5
Dependent Claim
20 words
A transmitter as set forth in claim 1, wherein said first group of relatively large circuit components includes a battery.
Claim 6
Dependent Claim
21 words
A transmitter as set forth in claim 4, wherein said battery and said microprocessor are located in corners of said substrate.
Claim 7
Dependent Claim
23 words
A transmitter as set forth in claim 5, wherein said second group of relatively small circuit components includes a resistor and a transistor.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-05 | 1995-11-04 | 1996-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-05 | 1999-11-04 | 2000-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-05 | 2003-11-04 | 2004-05-05 | $7700.00 | Window Closed / Lapsed |