US5359448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Infrared signal transmitter
Assignee: Assistive Listening Device Systems Inc
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Filing: 1993-02-23
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Granted: 1994-10-25
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Expires: 2013-02-23
Abstract
Abstract An infrared signal transmitter which has a signal generator enclosed in a housing, and a transmitter head which is removably attached thereto. The transmitter head includes a plurality of infrared transmitting elements arrayed in selected patterns to provide multidirectional transmission of infrared signals to a waiting receiver. The transmitter head and housing are provided with mating plug-in connectors permitting the transmitting head to be easily changed to provide selected transmitting arrays or patterns. The transmitter has its own power supply to be self-contained and portable.
Inventors
- 👤 Charles A. Laszlo
- 👤 Paul L. Geyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/80; H04B10/801
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
95 words
An infrared signal transmitter comprising: a signal generator, a housing in which said signal generator is housed, a mount removably secured to said housing, a plurality of infrared transmitting elements secured on said mount and operatively connected to said signal generator for transmitting signals received from said signal generator, said transmitting elements being arranged to transmit signals in a multi-directional pattern, and mating plug-in connector parts on said housing and mount respectively, through which connector parts said mount is removably secured to said housing and said transmitting elements are operatively connected to said signal generator.
Claim 2
Dependent Claim
95 words
An infrared signal transmitter comprising: a signal generator, a housing in which said signal generator is housed, a mount removably secured to said housing, a plurality of infrared transmitting elements secured on said mount and operatively connected to said signal generator for transmitting signals received from said signal generator, said transmitting elements being arranged to transmit signals in a multi-directional pattern, and mating plug-in connector parts on said housing and mount respectively, through which connector parts said mount is removably secured to said housing and said transmitting elements are operatively connected to said signal generator.
Claim 3
Dependent Claim
71 words
The transmitter of claim 1, which further comprises a second mount, said second mount having plug-in connector parts for connecting to said housing and signal generator and a plurality of infrared transmitting elements thereon arrayed to transmit signals in a pattern different from the pattern of said transmitting elements on the first-mentioned mount, and said first-mentioned and second mounts may be exchanged on said housing to provide selected signal transmitting patterns.
Claim 4
Dependent Claim
12 words
The transmitter of claim 1, wherein said signal generator comprises a microphone.
Claim 5
Dependent Claim
125 words
A self-contained infrared signal transmitter comprising: a housing having a signal generator therein, a first transmitting head having a plurality of infrared transmitting elements secured thereon arrayed in a first multi-directional signal transmitting pattern, a second transmitting head having a plurality of infrared transmitting elements secured thereon arrayed to transmit signals in a pattern different from the signal transmitting pattern of said first transmitting head, and mating plug-in connector parts on said housing and said first and second transmitting heads through which each of said transmitting heads may be removably secured to said housing and said transmitting elements are operatively connected to said signal generator for transmitting signals received from said signal generator, permitting exchange of said transmitting heads to provide selected signal transmitting patterns.
Claim 6
Dependent Claim
125 words
A self-contained infrared signal transmitter comprising: a housing having a signal generator therein, a first transmitting head having a plurality of infrared transmitting elements secured thereon arrayed in a first multi-directional signal transmitting pattern, a second transmitting head having a plurality of infrared transmitting elements secured thereon arrayed to transmit signals in a pattern different from the signal transmitting pattern of said first transmitting head, and mating plug-in connector parts on said housing and said first and second transmitting heads through which each of said transmitting heads may be removably secured to said housing and said transmitting elements are operatively connected to said signal generator for transmitting signals received from said signal generator, permitting exchange of said transmitting heads to provide selected signal transmitting patterns.
Claim 7
Dependent Claim
13 words
The transmitter of claim 4, wherein said transmitting elements comprise infrared emitting diodes.
Claim 8
Dependent Claim
23 words
The transmitter of claim 4, which further comprises an infrared transparent protective cover on said first transmitting head disposed over said transmitting elements.
Claim 9
Dependent Claim
51 words
The transmitter of claim 4 wherein each of said transmitting elements on said first transmitting head is operable to transmit generally unidirectionally along a transmitting axis, and transmitting elements are arrayed with their respective transmitting axes disposed at angles relative to the transmitting axes of other transmitting elements in said transmitter.
Claim 10
Dependent Claim
64 words
The transmitter of claim 7, wherein the transmitted signal from a transmitting element expands at a first angle from said transmitting axis as it progresses away from said element and adjacent transmitting elements are positioned with their transmitting axes disposed at an angle to each other which is less than twice said first angle to provide overlap between transmitted signals and adjacent transmitter elements.
Claim 11
Dependent Claim
27 words
The transmitter of claim 7, wherein said transmitting elements are arrayed about a central region and disposed with their transmitting axes projecting radially from said central region.
Claim 12
Dependent Claim
26 words
The transmitter of claim 9, wherein said transmitting elements are arrayed in a substantially circular pattern to produce a signal transmission pattern encompassing a full circle.
Claim 13
Dependent Claim
37 words
The transmitter of claim 4, wherein each transmitting element is operable to transmit generally unidirectionally along a transmitting axis and a pair of said transmitting elements are positioned with their transmitting axes disposed in substantially opposite directions.
Claim 14
Dependent Claim
33 words
The transmitter of claim 4, wherein an amplifier is mounted in said housing, a microphone is secured to a transmitting head, and said plug-in connector parts operatively connect said microphone to said amplifier.
Claim 15
Dependent Claim
25 words
The transmitter of claim 4, which further includes a battery in said housing operable to power said signal generator making said transmitter self-contained and portable.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |