US4724914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighing scale having a shock-absorbing transducer support
Assignee: PSC ACQUISITION Co
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Filing: 1987-08-17
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Granted: 1988-02-16
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Expires: 2007-08-17
Abstract
Abstract A weigh scale comprising a platform, a base, a transducer coupled to the platform, and a shock-absorbing compound spring having two serially-connected sections. One spring section flexes most favorably in a vertical direction and the other section in a horizontal direction. The compound spring moveably supports the transducer on the base so that shock forces applied to the platform from different directions are absorbed by the spring to prevent permanent distortion of the transducer and the resulting erroneous weight readings.
Inventors
- 👤 Charles Liang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:49
CPC Classifications
G; G01; G01G; G01G21/00; G01G21/02; G01G21/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
67 words
A weighing scale comprising a platform, a base, a transducer coupled to the platform, a shock-absorbing spring having two sections each of which flexes in two different directions with the spring moveably supporting the transducer on the base so that shock forces applied to the platform from different directions are absorbed by the spring to prevent permanent distortion of the transducer and the resulting erroneous weight readings.
Claim 2
Dependent Claim
67 words
A weighing scale comprising a platform, a base, a transducer coupled to the platform, a shock-absorbing spring having two sections each of which flexes in two different directions with the spring moveably supporting the transducer on the base so that shock forces applied to the platform from different directions are absorbed by the spring to prevent permanent distortion of the transducer and the resulting erroneous weight readings.
Claim 3
Dependent Claim
28 words
The combination of claim 1 in which the shock-absorbing spring is a compound spring having two serially-connected spring sections, with each section flexing most favorably in different directions.
Claim 4
Dependent Claim
28 words
The combination of claim 2 in which one spring section flexes most favorably in a direction approximately 90° from the direction of optimal flexing of the other section.
Claim 5
Dependent Claim
36 words
The combination of claim 3 in which the one spring section flexes most favorably in a vertical direction and the other in a horizontal direction when the weighing platform is moveable along a generally vertical axis.
Claim 6
Dependent Claim
16 words
The combination of claim 2 in which each spring section comprises two spaced generally parallel arms.
Claim 7
Dependent Claim
36 words
The combination of claim 5 in which the arms of both sections are joined by a linking segment, with the linking segment lying in a plane generally normal to the planes in which all arms lie.
Claim 8
Dependent Claim
38 words
The combination of claim 5 in which a first end of the compound spring is fixed to the base and an opposite end of the spring is fixed to the transducer thus being cantilever supported from the base.
Claim 9
Dependent Claim
43 words
The combination of claim 7 in which the platform is supported by an end of the transducer opposite the transducer end supported by the spring with the platform thus being cantilever supported from the base by the serially-connected transducer and the compound spring.
Claim 10
Dependent Claim
16 words
The combination of claim 8 in which each arm comprises a generally flat, thin metallic element.
Claim 11
Dependent Claim
14 words
The combination of claim 9 in which the metallic arm elements are stainless steel.
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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |