Patent US4368428A successfully refreshed from Google Patents.
Patent US4189018A successfully refreshed from Google Patents.
US4189018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulley and tape motion linkage for platform weighing scale
Assignee: Individual
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Filing: 1978-11-20
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Granted: 1980-02-19
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Expires: 1998-11-20
Abstract
Abstract A platform weighing scale having a transducer with a movable element to translate weight responsive platform motion into a weight responsive electrical signal and in which the platform is movably supported relative a scale base by one or more pulley and tape motion linkages which also actuate the transducer element. The improved pulley and tape motion linkage comprising a pulley-like element having diametrically opposite peripheral circular sectors, a tape contacting the circular sectors and connected between the platform and base, a pair of restraining elements sandwiching the pulley-like element for a composite rotary and linear motion between parallel surfaces with the circular sectors contacting the parallel surfaces, an arm fixedly coupled to the pulley-like element at its center of rotation by which a remote segment of the arm follows an amplified composite linear and rotary motion, a second pulley-like element fixed to the remote segment of the arm and having a peripheral circular sector having the same center of rotation as the first pulley-like element, and a second tape contacting the second circular sector and connected between the arm and the movable element of the transducer.
Inventors
- 👤 Frans Brouwer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:45
CPC Classifications
G; G01; G01G; G01G21/00; G01G21/02; G01G21/022; Y; Y10; Y10S; Y10S177/00; Y10S177/09
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
In a platform weighing scale having a transducer with a movable element to translate weight responsive platform motion into a weight responsive reading and in which the platform is movably supported relative a scale base by one or more pulley and tape motion linkages which also actuate the transducer element, the improved pulley and tape motion linkage comprising a pulley-like element having diametrically opposite peripheral circular sectors, tape means contacting the circular sectors and connected between the platform and base, a pair of restraining elements sandwiching the pulley-like element and the tape for a composite rotary and linear motion between parallel surfaces with tape portions adjacent the circular sectors contacting the parallel surfaces.
Claim 2
Dependent Claim
113 words
In a platform weighing scale having a transducer with a movable element to translate weight responsive platform motion into a weight responsive reading and in which the platform is movably supported relative a scale base by one or more pulley and tape motion linkages which also actuate the transducer element, the improved pulley and tape motion linkage comprising a pulley-like element having diametrically opposite peripheral circular sectors, tape means contacting the circular sectors and connected between the platform and base, a pair of restraining elements sandwiching the pulley-like element and the tape for a composite rotary and linear motion between parallel surfaces with tape portions adjacent the circular sectors contacting the parallel surfaces.
Claim 3
Dependent Claim
16 words
The combination of claim 1 in which the tape means is divided into two operative sections.
Claim 4
Dependent Claim
16 words
The combination of claim 1 comprising preload spring means forcing the restraining elements against the tape.
Claim 5
Dependent Claim
20 words
The combination of claim 1 in which the restraining elements are spaced to define a uniform gap between parallel surfaces.
Claim 6
Dependent Claim
17 words
The combination of claim 1 in which one of the restraining elements is a tape support post.
Claim 7
Dependent Claim
14 words
The combination of claim 5 in which the second restraining element is a plate.
Claim 8
Dependent Claim
20 words
The combination of claim 6 in which the restraining elements are spaced to define a uniform gap between parallel surfaces.
Claim 9
Dependent Claim
186 words
In a platform weighing scale having a transducer with a movable element to translate weight responsive platform motion into a weight responsive electrical signal and in which the platform is movably supported relative a scale base by one or more pulley and tape motion linkages which also actuate the transducer element, the improved pulley and tape motion linkage comprising a pulley-like element having diametrically opposite peripheral circular sectors, a tape contacting th circular sectors and connected between the platform and base, a pair of restraining elements sandwiching the pulley-like element for a composite rotary and linear motion between parallel surfaces with the circular sectors contacting the parallel surfaces, an arm fixedly coupled to the pulley-like element at its center of rotation by which a remote segment of the arm follows an amplified composite linear and rotary motion, a second pulley-like element fixed to the remote segment of the arm and having a peripheral circular sector having the same center of rotation as the first pulley-like element, a second tape contacting the second circular sector and connected between the arm and the movable element of the transducer.
Claim 10
Dependent Claim
186 words
In a platform weighing scale having a transducer with a movable element to translate weight responsive platform motion into a weight responsive electrical signal and in which the platform is movably supported relative a scale base by one or more pulley and tape motion linkages which also actuate the transducer element, the improved pulley and tape motion linkage comprising a pulley-like element having diametrically opposite peripheral circular sectors, a tape contacting th circular sectors and connected between the platform and base, a pair of restraining elements sandwiching the pulley-like element for a composite rotary and linear motion between parallel surfaces with the circular sectors contacting the parallel surfaces, an arm fixedly coupled to the pulley-like element at its center of rotation by which a remote segment of the arm follows an amplified composite linear and rotary motion, a second pulley-like element fixed to the remote segment of the arm and having a peripheral circular sector having the same center of rotation as the first pulley-like element, a second tape contacting the second circular sector and connected between the arm and the movable element of the transducer.
Claim 11
Dependent Claim
94 words
The combination of claim 8 comprising two ratio-arms, four small pulley-like elements each having an associated tape, and four large pulley-like elements each having an associated tape, each of the ratio-arms movably actuating two large pulley-like elements and their associated tapes with the four tapes of the large pulley-like elements being coupled to a movable transducer element disposed between the ratio arms, and each of the ratio arms being coupled to two small pulley-like elements whereby the movable transducer element is moved by the two ratio arms responsively to weight placed on the scale.
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) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |