US4455682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superregenerative radio receiver
Assignee: Pullman Co LLC
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Filing: 1982-04-05
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Granted: 1984-06-19
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Expires: 2002-04-05
Abstract
Abstract A superregenerative type radio receiver is provided that is particularly adapted for avoiding frequency shift of the receiver from a preselected tuned frequency regardless of installation environment for the receiver. The receiver comprises a superregenerative radio circuit and an associated antenna mounted on a circuit board and received in a container including a wall portion reflective to radio transmissions. The radio circuit is disposed to the wall portion to shroud the radio circuit whereby the radio receiver is adapted to be installed near metallic items and maintain tuned frequency stability.
Inventors
- 👤 David A. Masters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:30
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0007; H05K9/006; H04; H04B; H04B1/00; H04B1/06; H04B1/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A superregenerative type radio receiver comprising a superregenerative radio circuit and an antenna mounted on a circuit board and received in a container including a base wall portion comprising material reflective to radio transmissions, said radio circuit being disposed to said base wall portion to shroud said radio circuit and being spaced from said base wall portion by a distance defined by a plurality of spacer members interposed between said circuit board and said wall portion and wherein said base wall portion reflects radio transmissions to said antenna to provide additive in-phase gain at said antenna for a pre-selected tuned frequency, whereby said radio receiver is adapted to be installed contiguous to metallic items and maintain tuned frequency stability.
Claim 2
Dependent Claim
119 words
A superregenerative type radio receiver comprising a superregenerative radio circuit and an antenna mounted on a circuit board and received in a container including a base wall portion comprising material reflective to radio transmissions, said radio circuit being disposed to said base wall portion to shroud said radio circuit and being spaced from said base wall portion by a distance defined by a plurality of spacer members interposed between said circuit board and said wall portion and wherein said base wall portion reflects radio transmissions to said antenna to provide additive in-phase gain at said antenna for a pre-selected tuned frequency, whereby said radio receiver is adapted to be installed contiguous to metallic items and maintain tuned frequency stability.
Claim 3
Dependent Claim
25 words
The container as described in claim 1 wherein said radio wave reflective material comprises metallic paint painted upon an inner surface of said base wall.
Claim 4
Dependent Claim
26 words
The radio receiver as claimed in claim 1 wherein said wall portion includes a metallic foil tape adhesively attached to an inner wall of said receiver.
References Cited (Backward Citations)
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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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |