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US3741328A Expired / Lapsed US ⏱️ 0.0 years remaining

Weighing device with cantilever weighing cells

Assignee: Saab Bofors AB
•
Filing: 1971-04-07
•
Granted: 1973-06-26
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Expires: 1991-04-07
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Abstract

Abstract A scale for weighing heavy loads comprising a horizontally disposed frame structure in which a load platform is horizontally supported by load cells at least at three points. The peripheral outline of the platform is such that it can be laterally and vertically displaced within the frame structure. The load cells include strain gauges each of which comprises a first and a second elongate member. The first member is fixedly secured to one end of the second member in a parallel aligned relationship therewith. One member of each strain gauge is secured to the frame structure and the other supports the platform. The members in the strain gauges are free to bend in response to a load placed upon the platform and such bending sets up corresponding potentials which are indicative of the load and are measured by suitable measuring means. Moreover, between some of the strain gauges and the platform are abutting bearing means so constructed that lateral movements of the platform cause vertical movements of the platform.

Inventors

  • 👤 J Andersson
  • 👤 J Gustafsson
  • 👤 R Haggstrom
  • 👤 B Karlsson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 23:31
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/02; G01G19/021; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1408; Y; Y10; Y10S; Y10S177/00; Y10S177/09

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 125 words
A weighing device comprising a load carrying means, a frame, at least three support means on said frame for supporting said load carrying means, each of said support means comprising a beam-like load cell member having one end fixed to said frame and a freely bendable other end whereby a bending of said beam-like load cell member gives an indication of a load, and at least three abutment means on said load carrying means which are being positioned to rest on the beam-like load cell members, the surfaces of said abutment means being so constructed with respect to said support means that any forces which tend to create horizontal displacements of said load carrying means also cause an upward displacement of said load carrying means.
Claim 2
Dependent Claim 125 words
A weighing device comprising a load carrying means, a frame, at least three support means on said frame for supporting said load carrying means, each of said support means comprising a beam-like load cell member having one end fixed to said frame and a freely bendable other end whereby a bending of said beam-like load cell member gives an indication of a load, and at least three abutment means on said load carrying means which are being positioned to rest on the beam-like load cell members, the surfaces of said abutment means being so constructed with respect to said support means that any forces which tend to create horizontal displacements of said load carrying means also cause an upward displacement of said load carrying means.
Claim 3
Dependent Claim 39 words
The weighing device of claim 1 wherein said abutment means and said load cell members have cooperating surfaces so contoured with respect to each other that any mutual movement is along the axial direction of the load cell members.
Claim 4
Dependent Claim 27 words
The weighing device of claim 2 wherein said abutment means are so constructed to provide a bowl-shaped seat and the cross-section of said load cell is cylindrical.
Claim 5
Dependent Claim 21 words
The weighing device of claim 2 wherein said abutment means include a rotationally symmetrical body cradled from said load carrying means.
Claim 6
Dependent Claim 12 words
The weighing device of claim 2 wherein said abutment means are elastic.
Claim 7
Dependent Claim 18 words
The weighing device of claim 1 wherein said load carrying means are situated below said load cell members.
Claim 8
Dependent Claim 49 words
The weighing device of claim 1 wherein said frame and said load carrying means are rectangular with said load cell members being positioned at corners of the frame, the neutral axes of said load cell members being essentially co-linear with the diagonals of the rectangle defined by said frame.

References Cited (Backward Citations)

GB787320A Cited
US3103984A Cited
US3340726A Cited
US3610352A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-06-25 1976-12-25 1977-06-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-06-25 1980-12-25 1981-06-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-06-25 1984-12-25 1985-06-26 $7700.00 Window Closed / Lapsed

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