Patent US5884241A successfully refreshed from Google Patents.
US5884241A
Expired / Lapsed
US
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Load measuring apparatus for vehicle
Assignee: Mitsubishi Fuso Truck and Bus Corp
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Filing: 1996-08-21
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Granted: 1999-03-16
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Expires: 2016-08-21
Abstract
Abstract A load calculated at the time of completion of cargo loading is detected and held to prevent a calculation output from being changed even when an output of load detection means changes due to a temperature change, thereby preventing the calculation output from being changed as far as a load weight is not changed. Further, at the time of reloading, the held calculation value is corrected according to the calculation value corresponding to a difference between the output value of the load detection means immediately before the reloading and the output value thereafter of the load detection means, thereby calculating the load weight at reloading while eliminating effects of temperature changes.
Inventors
- 👤 Hiroshi Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:50
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/08; G01G19/12; G01G23/00; G01G23/48
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
257 words
A load measuring apparatus for a vehicle, comprising: load detection means for generating an output according to a weight of a load carried by the vehicle; control means for calculating and outputting a weight value of the load carried by the vehicle according to the output of the load detection means; loading completion detection means for detecting completion of a first loading of the load onto the vehicle; pre-loading detection means for detecting a condition immediately before a second loading of the load loaded onto the vehicle subsequent to said first loading; and a manual reset switch, wherein when operation of said manual reset switch is detected, the calculated weight value is updated to zero and held at that value, and the held calculated value is corrected according to a difference between the output of said load detection means at the time said reset switch is operated and the output thereafter of said load detection means to calculate the weight value, wherein said control means holds the calculated weight value at the time when completion of said first loading is detected by said loading completion detection means and continues to output the held calculated weight value, and when the condition immediately before said second loading is detected by said pre-loading detection means subsequent to said first loading, said control means updates the held calculated weight value according to a difference between the output of said load detection means at the time the condition immediately before loading is detected and the output thereafter of said load detection means.
Claim 2
Dependent Claim
257 words
A load measuring apparatus for a vehicle, comprising: load detection means for generating an output according to a weight of a load carried by the vehicle; control means for calculating and outputting a weight value of the load carried by the vehicle according to the output of the load detection means; loading completion detection means for detecting completion of a first loading of the load onto the vehicle; pre-loading detection means for detecting a condition immediately before a second loading of the load loaded onto the vehicle subsequent to said first loading; and a manual reset switch, wherein when operation of said manual reset switch is detected, the calculated weight value is updated to zero and held at that value, and the held calculated value is corrected according to a difference between the output of said load detection means at the time said reset switch is operated and the output thereafter of said load detection means to calculate the weight value, wherein said control means holds the calculated weight value at the time when completion of said first loading is detected by said loading completion detection means and continues to output the held calculated weight value, and when the condition immediately before said second loading is detected by said pre-loading detection means subsequent to said first loading, said control means updates the held calculated weight value according to a difference between the output of said load detection means at the time the condition immediately before loading is detected and the output thereafter of said load detection means.
Claim 3
Dependent Claim
23 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said loading completion detection means detects starting of the vehicle.
Claim 4
Dependent Claim
24 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said pre-loading detection means detects a standstill condition of the vehicle.
Claim 5
Dependent Claim
38 words
The load measuring apparatus for a vehicle as claimed in claim 3, wherein said pre-loading detection means detects that the vehicle is in the standstill condition after a lapse of a predetermined time from stopping of the vehicle.
Claim 6
Dependent Claim
23 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said loading completion detection means is an ignition key switch.
Claim 7
Dependent Claim
31 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein at least one of said loading completion detection means and said pre-loading detection means is a manual switch.
Claim 8
Dependent Claim
31 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein at least one of said loading completion detection means and said pre-loading detection means is a manual switch.
Claim 9
Dependent Claim
21 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said load detection means is a magnetostriction sensor.
Claim 10
Dependent Claim
31 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said load detection means is attached to a shackle pin at a front wheel side of the vehicle.
Claim 11
Dependent Claim
31 words
The load measuring apparatus for a vehicle as claimed in claim 1, wherein said load detection means is attached to a trunnion shaft at a rear wheel side of the vehicle.
Claim 12
Independent Claim
132 words
A method of measuring a load carried by a vehicle, comprising: measuring a first weight indicative of a weight of a load carried by the vehicle; detecting completion of loading of the load on the vehicle; memorizing and maintaining the measured weight at the time when completion of the loading is detected; detecting reloading of a load to be carried by the vehicle; measuring a second weight indicative of a weight of a load carried by the vehicle immediately before detection of the reloading; detecting completion of the reloading of the load on the vehicle; measuring a third weight indicative of a weight of a load carried by the vehicle after the reloading; and calculating an actual weight being carried by the vehicle based on the measured first, second, and third weight.
Claim 13
Independent Claim
132 words
A method of measuring a load carried by a vehicle, comprising: measuring a first weight indicative of a weight of a load carried by the vehicle; detecting completion of loading of the load on the vehicle; memorizing and maintaining the measured weight at the time when completion of the loading is detected; detecting reloading of a load to be carried by the vehicle; measuring a second weight indicative of a weight of a load carried by the vehicle immediately before detection of the reloading; detecting completion of the reloading of the load on the vehicle; measuring a third weight indicative of a weight of a load carried by the vehicle after the reloading; and calculating an actual weight being carried by the vehicle based on the measured first, second, and third weight.
Claim 14
Dependent Claim
31 words
The method of claim 11, wherein said actual weight is calculated based on a difference between said second and third weight, and a sum of the difference and the first weight.
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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) | 2002-03-15 | 2002-09-14 | 2003-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-15 | 2006-09-14 | 2007-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-15 | 2010-09-14 | 2011-03-16 | $7700.00 | Window Closed / Lapsed |