US4381826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing scale of unitary construction
Assignee: Mettler Toledo Schweiz GmbH
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Filing: 1980-10-27
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Granted: 1983-05-03
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Expires: 2000-10-27
Abstract
Abstract A single unit made of a light metal or alloy preferably in a diecast process is shaped to constitute the frame, the levers, and hinged bearings of a platform scale. Even the measuring element can be integrated into this one-piece unit. The resultant scale has a very low profile and is particularly suitable for mass manufacture for applications not requiring excessive resolution as, for example, post office scales or scales for home use.
Inventors
- 👤 Walter E. Kupper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:12
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G21/00; G01G21/28
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
117 words
In a weighing scale having load-receiving means and an elastically deformable measuring element, the improvement comprising mechanical means intercoupled between said load-receiving means and said measuring element to create load-dependent deformations in said measuring element, said mechanical means comprising a frame, a first and second lever, and means for swingably connecting said first and second levers to said frame; wherein each of said levers is T-shaped, each of said T's having a stem and a crossbar; wherein said stem of said first T is arranged parallel to said stem of said second T and at a predetermined distance therefrom; and wherein said measuring element is connected between said stems so that a load-dependent torsion is applied thereto.
Claim 2
Dependent Claim
117 words
In a weighing scale having load-receiving means and an elastically deformable measuring element, the improvement comprising mechanical means intercoupled between said load-receiving means and said measuring element to create load-dependent deformations in said measuring element, said mechanical means comprising a frame, a first and second lever, and means for swingably connecting said first and second levers to said frame; wherein each of said levers is T-shaped, each of said T's having a stem and a crossbar; wherein said stem of said first T is arranged parallel to said stem of said second T and at a predetermined distance therefrom; and wherein said measuring element is connected between said stems so that a load-dependent torsion is applied thereto.
Claim 3
Dependent Claim
23 words
A weighing scale as set forth in claim 1, wherein said frame is rectangular; and wherein said load-receiving means is a rectangular platform.
Claim 4
Dependent Claim
28 words
A weighing scale as set forth in claim 2, further comprising a housing having a lower part; and wherein said platform constitutes the upper part of said housing.
Claim 5
Dependent Claim
24 words
A weighing scale as set forth in claim 1, wherein said frame and said first and second lever are manufactured as a single unit.
Claim 6
Dependent Claim
18 words
A weighing scale is set forth in claim 4, wherein said single unit further comprises said measuring unit.
Claim 7
Dependent Claim
25 words
A weighing scale as set forth in claim 4, wherein said measuring element connected between said stems is an integral part of said single unit.
Claim 8
Dependent Claim
19 words
A weighing scale as set forth in claim 1, further comprising strain gauge transducers applied to said measuring element.
Claim 9
Dependent Claim
25 words
A weighing scale as set forth in claim 7, wherein said strain gauge transducers are applied to said measuring element by a thin film technique.
Claim 10
Dependent Claim
41 words
A weighing scale as set forth in claim 8, wherein said measuring element has a surface undergoing maximum deformation under application of a load to said scale; and wherein all of said strain gauge transducers are vapor deposited onto said surface.
Claim 11
Dependent Claim
16 words
In a weighing scale having load-receiving means and an elastically deformable measuring element, the improvement comprising
Claim 12
Dependent Claim
16 words
In a weighing scale having load-receiving means and an elastically deformable measuring element, the improvement comprising
Claim 13
Dependent Claim
127 words
mechanical means intercoupled between said load-receiving means and said measuring element to create load-dependent deformations in said measuring element, said mechanical means comprising a frame, a first and second lever, and means for swingably connecting said first and second levers to said frame: wherein said levers are V-shaped, each of said V's having a base and a first and second leg: wherein said V-shaped first and second levers extend in the same direction; wherein said mechanical means further comprises means for swingably connecting a first part of said first V-shaped lever and a second part of said second V-shaped lever to said frame; and wherein said measuring element is connected between the free end of said first lever and the frame connected end of said second lever.
Claim 14
Dependent Claim
127 words
mechanical means intercoupled between said load-receiving means and said measuring element to create load-dependent deformations in said measuring element, said mechanical means comprising a frame, a first and second lever, and means for swingably connecting said first and second levers to said frame: wherein said levers are V-shaped, each of said V's having a base and a first and second leg: wherein said V-shaped first and second levers extend in the same direction; wherein said mechanical means further comprises means for swingably connecting a first part of said first V-shaped lever and a second part of said second V-shaped lever to said frame; and wherein said measuring element is connected between the free end of said first lever and the frame connected end of said second lever.
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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) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |