Patent US2212917A successfully refreshed from Google Patents.
US4131182A
Expired / Lapsed
US
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Speed pattern generator
Assignee: Westinghouse Electric Corp
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Filing: 1977-08-24
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Granted: 1978-12-26
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Expires: 1997-08-24
Abstract
Abstract A speed pattern generator for use with manually operated construction elevator car controls. Leveling and running patterns, as well as linear acceleration and deceleration patterns are provided by a pair of operational amplifiers connected to provide integrating and amplifying functions.
Inventors
- 👤 Jerry D. Bass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:25
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/28; B66B1/285
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A speed pattern generator for manually operated construction elevator car controls, comprising: amplifier means having an input and an output, said amplifier means including a first operational amplifier, integrating means having an input and an output, said integrating means including a second operational amplifier, means connecting the output of said integrating means to the input of said amplifier means, first pattern circuit means connected to the input of said amplifier means, second pattern circuit means connected to the input of said integrating means, and control means for activating and deactivating said first and second pattern circuit means in a predetermined sequence to provide a speed pattern signal at the output of said amplifier means.
Claim 2
Dependent Claim
114 words
A speed pattern generator for manually operated construction elevator car controls, comprising: amplifier means having an input and an output, said amplifier means including a first operational amplifier, integrating means having an input and an output, said integrating means including a second operational amplifier, means connecting the output of said integrating means to the input of said amplifier means, first pattern circuit means connected to the input of said amplifier means, second pattern circuit means connected to the input of said integrating means, and control means for activating and deactivating said first and second pattern circuit means in a predetermined sequence to provide a speed pattern signal at the output of said amplifier means.
Claim 3
Dependent Claim
40 words
The speed pattern generator of claim 1 including third pattern circuit means connected to the input of the amplifier means, and wherein the control means activates and deactivates the first, second and third pattern circuit means in a predetermined sequence.
Claim 4
Dependent Claim
94 words
The speed pattern generator of claim 2 including an elevator car, drive means for said elevator car, brake means, and means responsive to the condition of said brake means, with said brake responsive means being in a first condition when the brake means is set, and in a second condition when it is lifted, and wherein the control means activates only the third pattern circuit means when said brake responsive means is in its first condition, with said first pattern circuit means being enabled when said brake responsive means switches to its second condition.
Claim 5
Dependent Claim
78 words
The speed pattern generator of claim 1 including an elevator car, drive means for said elevator car, brake means associated with said drive means, and means responsive to the condition of said brake means, with said brake responsive means being in a first condition when the brake means is set, and in a second condition when it is lifted, and wherein the first pattern circuit means is enabled when the brake responsive means is in its second condition.
Claim 6
Dependent Claim
93 words
The speed pattern generator of claim 1 including an elevator car, drive means for said elevator car, brake means associated with said drive means, and brake responsive means, said brake responsive means being in a first condition when said brake means is set, and in a second condition when said brake means is lifted, with the first and second pattern circuit means being disabled when the brake responsive means is in its first condition, the first and second pattern circuit means being enabled when the brake responsive means is in its second condition.
Claim 7
Dependent Claim
60 words
The speed pattern generator of claim 5 including third pattern circuit means connected to the input of the amplifier means, with the control means selectively activating and deactivating the first, second and third pattern circuit means in a predetermined sequence, and wherein the control means activates the third pattern circuit without regard to the condition of the brake responsive means.
Claim 8
Dependent Claim
42 words
The speed pattern generator of claim 1 wherein the second operational amplifier includes a feedback capacitor, and a diode connected across said feedback capacitor poled to enable the second operational amplifier to build up an output voltage of a single selected polarity.
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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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |