US4536065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixation device for eye testing
Assignee: Individual
•
Filing: 1982-09-29
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Granted: 1985-08-20
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Expires: 2002-09-29
Abstract
Abstract A fixation device having primary utility in testing children's eyes is disclosed. The device comprises employing remote control of a variety of fixation targets to maintain the attention of the child-patient.
Inventors
- 👤 Larry A. Sheingorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:09
CPC Classifications
A; A61; A61B; A61B3/00; A61B3/02; A61B3/028; A61B3/032
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
99 words
A fixation device for testing vision comprising: (a) remote transmission means for transmitting any one of a plurality of characteristic signals which is selected by the examiner, (b) receiving means having no physical connection to the transmission means for receiving and identifying said characteristic signal and for generating and directing a function command signal to the appropriate function circuitry, and (c) function circuitry for receiving the function command signals from the receiving means and operating two or more accommodative fixation targets in response thereto, wherein said accommodative fixation targets are mechanical figures which move and emit sounds when activated.
Claim 2
Dependent Claim
99 words
A fixation device for testing vision comprising: (a) remote transmission means for transmitting any one of a plurality of characteristic signals which is selected by the examiner, (b) receiving means having no physical connection to the transmission means for receiving and identifying said characteristic signal and for generating and directing a function command signal to the appropriate function circuitry, and (c) function circuitry for receiving the function command signals from the receiving means and operating two or more accommodative fixation targets in response thereto, wherein said accommodative fixation targets are mechanical figures which move and emit sounds when activated.
Claim 3
Dependent Claim
27 words
The device of claim 1, further comprising circuitry which disables and resets said function circuitry each time a function command signal is generated by said receiving means.
Claim 4
Dependent Claim
27 words
The device of claim 1, wherein said function circuitry operates said fixation targets by activating one and only one target in response to a function command signal.
Claim 5
Dependent Claim
29 words
The device of claim 1, wherein said function circuitry operates said fixation targets by activating a plurality of said targets in sequence in response to a function command signal.
Claim 6
Dependent Claim
20 words
The device of claim 4, wherein each target activated in sequence remains activated for a longer time than its predecessor.
Claim 7
Dependent Claim
15 words
The device of claim 1, wherein said fixation targets are illuminated by lights when activated.
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) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |