US4404641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maintenance monitor
Assignee: Maintenance Technology Inc
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Filing: 1981-02-17
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Granted: 1983-09-13
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Expires: 2001-02-17
Abstract
Abstract Disclosed is a maintenance monitor which at a preselected interval will automatically alert one that the equipment of concern is due for maintenance. The maintenance monitor includes a control unit sensing device such as a switch inductive pickup etc., a programmable module counter activated by a signal from the sensing device and a display for readout of the counter and to advise of the maintenance period or to perform a function.
Inventors
- 👤 Louis M. Bazarnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:27
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/02; G08B21/0297; B; B60; B60L; B60L1/00; B60L1/003; B60L3/00; B60L3/12; G04; G04F; G04F10/00; G07; G07C; G07C5/00; G07C5/006; B60L2200/00; B60L2200/40; B60L2200/42; B60L2240/00; B60L2240/80; B60L2250/00; B60L2250/10; B60L2250/12; B60L2250/16
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
119 words
A running-time maintenance monitor for indicating when equipment to be operated is due for maintenance, said monitor comprising: (a) user-settable means for manually setting a predetermined maintenance time indicative of when the equipment being operated is due for maintenance; (b) running time sensor means for detecting only the running time of the equipment each time the latter is operated; (c) control means responsive to the running time sensor means, and operative for accumulating each running time, and for generating a control signal when the accumulated running time corresponds to the predetermined maintenance time set by the user; and (d) indicator means responsive to generation of the control signal, and operative for indicating when the equipment is due for maintenance.
Claim 2
Dependent Claim
119 words
A running-time maintenance monitor for indicating when equipment to be operated is due for maintenance, said monitor comprising: (a) user-settable means for manually setting a predetermined maintenance time indicative of when the equipment being operated is due for maintenance; (b) running time sensor means for detecting only the running time of the equipment each time the latter is operated; (c) control means responsive to the running time sensor means, and operative for accumulating each running time, and for generating a control signal when the accumulated running time corresponds to the predetermined maintenance time set by the user; and (d) indicator means responsive to generation of the control signal, and operative for indicating when the equipment is due for maintenance.
Claim 3
Dependent Claim
34 words
The monitor as defined in claim 1, wherein the user-settable means is also operative for manually setting a predetermined pre-maintenance time indicative of an advance indication of when the equipment is due for maintenance.
Claim 4
Dependent Claim
41 words
The monitor as defined in claim 2, wherein the indicator means includes a first readout when the accumulated running time corresponds to the predetermined maintenance time, and a second readout when the accumulated running time corresponds to the predetermined pre-maintenance time.
Claim 5
Dependent Claim
26 words
The monitor as defined in claim 1, wherein the running time sensor means includes means for detecting the beginning and the end of each running time.
Claim 6
Dependent Claim
42 words
The monitor as defined in claim 4, wherein the control means includes a counter operative to begin counting upon the detection of the beginning of each running time, and to cease counting upon the detection of the end of each running time.
Claim 7
Dependent Claim
23 words
The monitor as defined in claim 1, wherein the control means includes means for disabling the equipment upon generation of the control signal.
Claim 8
Dependent Claim
23 words
The monitor as defined in claim 1, wherein the control means also includes reset means for restarting the accumulated running time from zero.
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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) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |