US3617370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for regulating the operation of a scale
Assignee: Ohaus Corp
•
Filing: 1970-11-17
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Granted: 1971-11-02
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Expires: 1990-11-17
Abstract
Abstract A compound lever scale having a ratio lever beam in an upper housing, operatively connected to a load beam assembly contained in a lower section of the scale. Ratio pans are suspended from the ratio lever beam by knife edges extending perpendicularly from the ratio lever beam to restrain movement of the ratio pans in the plane perpendicular to the length of the ratio lever beam. Magnetic damping means operatively connected to the ratio pans suppress swinging of the ratio pans and oscillations of the entire lever system of the scale. A spring device connecting the ratio lever beam with its housing allows adjustment of torque exerted on the ratio lever beam to enable a rapid zero-adjustment for the entire scale.
Inventors
- 👤 Earl D Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:14
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/06; G01G23/10; G01G19/00; G01G19/40; G01G19/42; Y; Y10; Y10S; Y10S177/00; Y10S177/05
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
69 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 1, further comprising: resilient means operatively associated with said weigh beam and said support means to exert a torque on said weigh beam; and adjusting means connected to said resilient means to regulate the torque exerted on said weigh beam to allow the weigh beam to be rapidly adjusted to a zero balance.
Claim 2
Dependent Claim
70 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 2 wherein: said resilient means include spring means connected to said weigh beam and to said adjusting means; and said adjusting means include: a shaft journaled in said support means; and means to rotate said shaft to adjust the tension of said spring means and thereby control the torque exerted on said weigh beam.
Claim 3
Dependent Claim
65 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 3 wherein: the axis of said shaft journaled in said support means is disposed substantially coaxially with the axis of rotation of said fulcrum of said weigh beam on said support means; and said means to rotate said shaft include knob means disposed at the end of said shaft.
Claim 4
Dependent Claim
73 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 1 wherein said magnetic brake means comprise: vane means connected to said scalepan and said weigh beam; and a plurality of magnetic means adapted to coact with said vane means so that vertical movement of said vane means will produce damping forces of substantially different magnitude than damping forces produced by horizontal movement of said vane means.
Claim 5
Dependent Claim
39 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 5 wherein said plurality of magnetic means are disposed on opposite sides of said vane means below said scalepan and said weigh beam.
Claim 6
Dependent Claim
47 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 6 wherein said plurality of magnetic means include horseshoe-type magnets disposed on opposite sides of said vane means with all the poles of said magnets disposed in substantially the same plane.
Claim 7
Dependent Claim
65 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 7 further comprising: a load beam; means operatively connecting said load beam to said weigh beam, so that small weights on said weigh beam will counterpoise relatively larger loads on said load beam; and said horseshoe magnets are disposed to produce stronger damping by horizontal movement of said vane.
Claim 8
Dependent Claim
99 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 8, further comprising means to restrain movement of said scalepan in the plane perpendicular to the plane of rotation of said weigh beam, comprising: substantially horizontal scalepan support means extending from each side of said weigh beam, substantially perpendicular to the plane of rotation of said weigh beam; and scalepan-hanging means connected to said scalepan and connected at spaced locations on said scalepan support means to prevent swinging of said scalepan in a plane parallel to the plane of said scalepan support means.
Claim 9
Dependent Claim
117 words
The means to regulate operation of a weigh beam of a scale claimed in claim 6 wherein said magnetic brake means comprise: support means for said magnetic means; and said vane means comprise: substantially vertical vane means diSposed with relation to said magnetic means to produce damping forces in said vertical vane means upon movement of said vertical vane means in a plane parallel to the plane of rotation of said weigh beam; nonvertical vane means disposed with relation to said vertical vane means and said magnetic means to act as deflection shields to protect magnetic means from contamination by magnetic particles; and means connecting said vertical vane means and nonvertical vane means to said scalepan-hanging means.
Claim 10
Dependent Claim
121 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 2, wherein said weigh beam is an element of a compound lever scale, comprising: a load beam having a power point and a load point; support means for said load beam; a multiplying beam having a power point and a load point; means connecting said power point of said multiplying beam to said weigh beam; a housing disposed about the said weigh beam; a housing disposed about said load beam and said multiplying beam; said magnetic brake means for said weigh beam disposed in said housing for said load beam; and said adjusting means for said weigh beam extending through housing for said weigh beam.
Claim 11
Dependent Claim
83 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 11 wherein: said resilient means include spring means connected to said weigh beam and to said adjusting means; said adjusting means includes a shaft journaled in said weigh beam housing; and knob means on the end of said shaft extending through said weigh beam housing to rotate said shaft to adjust the tension of said spring means and thereby adjust the torque exerted on said weigh beam.
Claim 12
Dependent Claim
145 words
The means to regulate the operation of a weigh beam of a scale claimed in claim 12 wherein said magnetic brake means include: magnet means disposed within said load beam housing; scalepan support means extending from opposite sides of said weigh beam and substantially perpendicular to the plane of rotation of said weigh beam; scalepan-hanging means connected to said scalepan and connected at spaced locations on said scalepan support means to prevent swinging of said scalepan in a plane parallel to the plane of said scalepan support means; vertical shaft means connected to said scalepan-hanging means and extending into said load beam housing; and vane means connected to said vertical shaft means and disposed within said load beam housing to coact with said magnetic means to produce damping forces on said vane means upon swinging of said scalepan and upon oscillating of said weigh beam.
References Cited (Backward Citations)
US3472327A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |