US3747715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing device
Assignee: Flintab AB
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Filing: 1971-09-16
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Granted: 1973-07-24
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Expires: 1991-09-16
Abstract
Abstract A device for static or dynamic weighing of railway guided vehicles comprising a foundation, vehicle engaging rails forming a weigh platform adapted to engage and support the wheels of the vehicle and friction free elastic joints interconnecting the weigh rails to the foundation thereby to eliminate open joints between the ground rails and the weigh device without affecting the accuracy of the weigh device.
Inventors
- 👤 K Nordstrom
- 👤 R Flinth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:44
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/02; G01G19/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
141 words
A weighing device for weighing railway guided vehicles or the like comprising: longitudinally extending vehicle supporting means adapted to engage and support at least one wheel of a vehicle for passage across the weigh device, said vehicle supporting means including an uninterrupted wheel engaging surface extenDing across the weigh device, foundation means supporting said vehicle supporting means at either end thereof, load sensing means operatively associated with a portion of said vehicle supporting means for sensing a load applied to said portion, said vehicle supporting means including flexure joint means between said foundation support and said portion, said flexure joint means comprising a relatively rigid section with bendable elastic joints on either side thereof whereby, said flexure joint means are operative to permit vertical movement of said portion of said vehicle supporting means substantially independently of said foundation supported ends thereof.
Claim 2
Dependent Claim
141 words
A weighing device for weighing railway guided vehicles or the like comprising: longitudinally extending vehicle supporting means adapted to engage and support at least one wheel of a vehicle for passage across the weigh device, said vehicle supporting means including an uninterrupted wheel engaging surface extenDing across the weigh device, foundation means supporting said vehicle supporting means at either end thereof, load sensing means operatively associated with a portion of said vehicle supporting means for sensing a load applied to said portion, said vehicle supporting means including flexure joint means between said foundation support and said portion, said flexure joint means comprising a relatively rigid section with bendable elastic joints on either side thereof whereby, said flexure joint means are operative to permit vertical movement of said portion of said vehicle supporting means substantially independently of said foundation supported ends thereof.
Claim 3
Dependent Claim
49 words
The weigh device of claim 1 and further including membrane means interconnecting said vehicle supporting means and said foundation means, said membrane means being spaced from the wheel engaging surface of said vehicle supporting means and having substantial rigidity in a horizontal direction but weak in a vertical direction.
Claim 4
Dependent Claim
17 words
The weigh device of claim 1 wherein said load sensing means comprises shear stress sensing load cells.
Claim 5
Dependent Claim
36 words
The weigh device of claim 1 wherein the longitudinal ends of said vehicle supporting means extend beyond said foundation means and include elastic joint means for insulating the weigh device from the influence of external force.
Claim 6
Dependent Claim
21 words
The weigh device of claim 4 wherein said vehicle supporting means and said foundation means are formed as an integral unit.
Claim 7
Dependent Claim
150 words
In a railway system having a pair of rails for supporting railway cars for movement therealong, a weigh device for weighing railway cars, said weigh device including: a longitudinally extending weigh rail coextensive with one of said rails in said system and including a substantially uninterrupted wheel engaging surface, means supporting said weigh rail at either end thereof, spaced apart flexure joints formed in said weigh rail and defining a weigh portion therebetween, said weigh portion being movable vertically relative to the supported ends thereof, each of said flexure joints comprising a pair of spaced apart narrow slots formed in said weigh rail and a substantially rigid longitudinal segment between the two slots of each pair of slots, and load sensing means disassociated from direct contact with said rigid segments and operatively associated with said weigh portion for producing a signal when said weigh portion moves vertically under a load.
Claim 8
Dependent Claim
150 words
In a railway system having a pair of rails for supporting railway cars for movement therealong, a weigh device for weighing railway cars, said weigh device including: a longitudinally extending weigh rail coextensive with one of said rails in said system and including a substantially uninterrupted wheel engaging surface, means supporting said weigh rail at either end thereof, spaced apart flexure joints formed in said weigh rail and defining a weigh portion therebetween, said weigh portion being movable vertically relative to the supported ends thereof, each of said flexure joints comprising a pair of spaced apart narrow slots formed in said weigh rail and a substantially rigid longitudinal segment between the two slots of each pair of slots, and load sensing means disassociated from direct contact with said rigid segments and operatively associated with said weigh portion for producing a signal when said weigh portion moves vertically under a load.
Claim 9
Dependent Claim
127 words
A longitudinally extending weigh rail for use in weighing railway guided vehicles or the like, said weigh rail having a generally uninterrupted wheel engaging surface extending along the length thereof and two pairs of spaced apart areas of substantially reduced cross section extending transversely of said weigh rail with each of said pairs of areas defining a deflectable friction free joint, a central weigh portion between said joints, each joint including a substantially rigid longitudinal segment between the two areas of the joint''s pair, said segments being disassociated from the central weigh portion of said rail except through one of said areas of each of said pairs, whereby said portion of said weigh rail between said pairs is deflectable relative to the ends of said weigh rail.
Claim 10
Dependent Claim
127 words
A longitudinally extending weigh rail for use in weighing railway guided vehicles or the like, said weigh rail having a generally uninterrupted wheel engaging surface extending along the length thereof and two pairs of spaced apart areas of substantially reduced cross section extending transversely of said weigh rail with each of said pairs of areas defining a deflectable friction free joint, a central weigh portion between said joints, each joint including a substantially rigid longitudinal segment between the two areas of the joint''s pair, said segments being disassociated from the central weigh portion of said rail except through one of said areas of each of said pairs, whereby said portion of said weigh rail between said pairs is deflectable relative to the ends of said weigh rail.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |