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US4380275A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for interfacing weighing data with a lift control system

Assignee: Elevator GmbH
•
Filing: 1981-06-24
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Granted: 1983-04-19
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Expires: 2001-06-24
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Abstract

Abstract Apparatus for interfacing weighing data with a lift control system that has been carried out with an operator amplifier circuit comprising a speed controller amplifier (NS) of which the plus terminal has been connected to ground and at the minus terminal enter the speed set-point value and the current speed value and further from the minus terminal has been connected to the output of the speed controller amplifier a stabilizing resistor (R1), and a stabilizing capacitor (C1). The apparatus comprises a start switch (K1) which short-circuits the stabilizing resistor (R1) and an auxiliary start switch (K1A) which connects the juncture of the stabilizing resistor (R1) and capacitor (C1) to the terminals of the weighing data resistors (R7) and (R8). The other end of the latter weighing datum resistor (R8) is connected to the output of the speed controller amplifier (NS) and to the other end of the foremost weighing datum resistor (R7) has been connected the external weighing datum.

Inventors

  • 👤 Matti Kahkipuro

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 14:23
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/28

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 154 words
Apparatus for interfacing weighing data with a lift control system that has been carried out with an operator amplifier circuit comprising a speed controller amplifier (NS) of which the plus terminal has been connected to ground and at the minus terminal enter the speed set-point value and the current speed value and further from the minus terminal has been connected to the output of the speed controller amplifier a stabilizing resistor (R1), a stabilizing capacitor (C1), a start switch (K1) which short-circuits the stabilizing resistor (R1), and an auxiliary start switch (K1A) which connects the juncture of the stabilizing resistor (R1) and capacitor (C1) to the terminals of the weighing data resistors (R7) and (R8), the other end of the latter weighing datum resistor (R8) being connected to the output of the speed controller amplifier (NS) and to the other end of the foremost weighing datum resistor (R7) being connected the external weighing datum.
Claim 2
Dependent Claim 154 words
Apparatus for interfacing weighing data with a lift control system that has been carried out with an operator amplifier circuit comprising a speed controller amplifier (NS) of which the plus terminal has been connected to ground and at the minus terminal enter the speed set-point value and the current speed value and further from the minus terminal has been connected to the output of the speed controller amplifier a stabilizing resistor (R1), a stabilizing capacitor (C1), a start switch (K1) which short-circuits the stabilizing resistor (R1), and an auxiliary start switch (K1A) which connects the juncture of the stabilizing resistor (R1) and capacitor (C1) to the terminals of the weighing data resistors (R7) and (R8), the other end of the latter weighing datum resistor (R8) being connected to the output of the speed controller amplifier (NS) and to the other end of the foremost weighing datum resistor (R7) being connected the external weighing datum.

References Cited (Backward Citations)

US3323606A Cited
US3543113A Cited
US3614996A Cited
GB1526369A Cited
JPS53111952A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-04-18 1986-10-18 1987-04-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-04-18 1990-10-18 1991-04-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-04-18 1994-10-18 1995-04-19 $7700.00 Window Closed / Lapsed

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