Patent US4418391A successfully refreshed from Google Patents.
US4418391A
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Method of inspecting operation of driving system including a main machine and a plurality of auxiliary machines, and driving system incorporating inspection apparatus for carrying out the inspection method
Assignee: Hitachi Ltd
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Filing: 1980-10-03
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Granted: 1983-11-29
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Expires: 2000-10-03
Abstract
Abstract Provided is a daily inspection process for making a daily inspection of a driving system having a main machine and a plurality of auxiliary machines. The driving system is so constructed that the main machine is started only after a plurality of starting conditions including correct functioning of the auxiliary machines are fulfilled. According to the inspection process of the invention, the plurality of starting condition are inspected sequentially in such a manner that, when the failure in one of the starting conditions is detected, the inspection proceeds to the next step after locking the main machine against the start up, so that the plurality of starting conditions are checked sequentially without suspension, whereby all of the failed conditions are detected in a single inspection operation.
Inventors
- 👤 Yoshikatsu Asada
- 👤 Shunji Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:43
CPC Classifications
G; G07; G07C; G07C3/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
121 words
A method of inspecting at set time intervals a driving system having a main machine and a plurality of auxiliary machines, said main machine being so controlled as to be started only when the function of every auxiliary machine is satisfactory, said method including the steps of: i. sequentially checking the function of all of said auxiliary machines without interruption to detect a malfunction of any auxiliary machine, in response to which an indication of a malfunction of said auxiliary machine is produced and a main machine locking signal is produced; ii. checking the function of said main machine if said main machine locking signal is not generated; and then iii. correcting any malfunction in an auxiliary and the main machine.
Claim 2
Independent Claim
121 words
A method of inspecting at set time intervals a driving system having a main machine and a plurality of auxiliary machines, said main machine being so controlled as to be started only when the function of every auxiliary machine is satisfactory, said method including the steps of: i. sequentially checking the function of all of said auxiliary machines without interruption to detect a malfunction of any auxiliary machine, in response to which an indication of a malfunction of said auxiliary machine is produced and a main machine locking signal is produced; ii. checking the function of said main machine if said main machine locking signal is not generated; and then iii. correcting any malfunction in an auxiliary and the main machine.
Claim 3
Dependent Claim
79 words
A driving system including a main machine, a plurality of auxiliary machines and a control means for, prior to start-up, sequentially checking the function of all of said auxiliary machines without interruption, and each time a malfunction of an auxiliary machine is detected, for producing an indication of a malfunction of said auxiliary machine and a main machine locking signal, said control means including means for starting said main machine if said main machine locking signal is not generated.
Claim 4
Dependent Claim
79 words
A driving system including a main machine, a plurality of auxiliary machines and a control means for, prior to start-up, sequentially checking the function of all of said auxiliary machines without interruption, and each time a malfunction of an auxiliary machine is detected, for producing an indication of a malfunction of said auxiliary machine and a main machine locking signal, said control means including means for starting said main machine if said main machine locking signal is not generated.
Claim 5
Dependent Claim
30 words
A driving system as set forth in claim 2, wherein said control means further includes means for checking the function of every auxiliary machine every day at a predetermined time.
Claim 6
Dependent Claim
25 words
A driving system as set forth in claim 3, wherein said main machine is a pump for sucking and discharging water from a water well.
Claim 7
Independent Claim
144 words
A method of inspecting at set time intervals a driving system having a main machine and a plurality of auxiliary machines, said main machine being so controlled as to be started only when the function of every auxiliary machine is satisfactory, said method including the steps of: i. sequentially operating all of said auxiliary machines without interruption to check the function of each auxiliary machine to detect a malfunction of any auxiliary machine, and producing an indication of a malfunction of each of said malfunctioning auxiliary machines in response to each detection of malfunction and a main machine lockout signal when a malfunction is detected in any auxiliary machine; ii. checking the function of said main machine if said main machine lockout signal is not generated; and then iii. correcting any malfunction in each malfunctioning auxiliary machine and any malfunction in the main machine.
Claim 8
Independent Claim
144 words
A method of inspecting at set time intervals a driving system having a main machine and a plurality of auxiliary machines, said main machine being so controlled as to be started only when the function of every auxiliary machine is satisfactory, said method including the steps of: i. sequentially operating all of said auxiliary machines without interruption to check the function of each auxiliary machine to detect a malfunction of any auxiliary machine, and producing an indication of a malfunction of each of said malfunctioning auxiliary machines in response to each detection of malfunction and a main machine lockout signal when a malfunction is detected in any auxiliary machine; ii. checking the function of said main machine if said main machine lockout signal is not generated; and then iii. correcting any malfunction in each malfunctioning auxiliary machine and any malfunction in the main machine.
Claim 9
Dependent Claim
103 words
A driving system including a main machine, a plurality of auxiliary machines and a control means for, prior to start-up, sequentially operating all of said auxiliary machines without interruption to check the function of each auxiliary machine, and each time a malfunction of an auxiliary machine is detected, producing an indication of a malfunction of each of said malfunctioning auxiliary machines in response to each detection of a malfunction and a main machine lockout signal when a malfunction is detected in any auxiliary machine, said control means including means for starting said main machine if said main machine lockout signal is not generated.
Claim 10
Dependent Claim
103 words
A driving system including a main machine, a plurality of auxiliary machines and a control means for, prior to start-up, sequentially operating all of said auxiliary machines without interruption to check the function of each auxiliary machine, and each time a malfunction of an auxiliary machine is detected, producing an indication of a malfunction of each of said malfunctioning auxiliary machines in response to each detection of a malfunction and a main machine lockout signal when a malfunction is detected in any auxiliary machine, said control means including means for starting said main machine if said main machine lockout signal is not generated.
Claim 11
Dependent Claim
30 words
A driving system as set forth in claim 6, wherein said control means further includes means for checking the function of each auxiliary machine every day at a predetermined time.
Claim 12
Dependent Claim
25 words
A driving system as set forth in claim 6, wherein said main machine is a pump for sucking and discharging water from a water well.
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |