US3698496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring balance with vertical linearizing means
Assignee: Berkel GmbH
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Filing: 1971-05-20
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Granted: 1972-10-17
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Expires: 1991-05-20
Abstract
Abstract A measuring instrument of the spring balance type for measuring a mass, through a measurement of force, which includes mounting means for a resilient member counteracting the force that maintains the axis of operation of the resilient member linear along the vertical.
Inventors
- 👤 Ernst Lohmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:24
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
122 words
A measuring instrument for measuring a mass through the measurement of a force comprising, a horizontally arranged main lever pivotally supported adjacent one end by a knife bearing, a set of rods including a vertical rod pivoted at one end thereof at the other end of the main lever and at the other end thereof to a restraining link, an indication system corresponding to said set of rods, means for applying the load to be measured to the main lever between the knife bearing and the rod end, a vertically extending resilient member counteracting the load, and adjustable means mounting the resilient member between a fixed support and the main lever so that the operation of the resilient member is always linear.
Claim 2
Dependent Claim
122 words
A measuring instrument for measuring a mass through the measurement of a force comprising, a horizontally arranged main lever pivotally supported adjacent one end by a knife bearing, a set of rods including a vertical rod pivoted at one end thereof at the other end of the main lever and at the other end thereof to a restraining link, an indication system corresponding to said set of rods, means for applying the load to be measured to the main lever between the knife bearing and the rod end, a vertically extending resilient member counteracting the load, and adjustable means mounting the resilient member between a fixed support and the main lever so that the operation of the resilient member is always linear.
Claim 3
Dependent Claim
18 words
A measuring instrument as defined in claim 1, wherein said load applying means includes a knife bearing connection.
Claim 4
Dependent Claim
16 words
A measuring instrument as defined in claim 2, wherein said resilient member is a coil spring.
Claim 5
Dependent Claim
43 words
A measuring instrument as defined in claim 3, wherein said adjustable mounting means includes means at the fixed support for shifting laterally the respective end of the spring and means on the main lever for shifting laterally the respective end of the spring.
Claim 6
Dependent Claim
48 words
A measuring instrument as defined in claim 4, wHerein said means at the fixed support includes a pair of spaced supports slidably mounting a cross bar to which one end of the spring is attached, and set screw means on the supports for locking the bar in place.
Claim 7
Dependent Claim
37 words
A measuring instrument as defined in claim 5, wherein said means at the movable support includes a bell crank adjustably secured to the main lever, and a knife bearing connection between the bell crank and the spring.
Claim 8
Dependent Claim
99 words
A measuring instrument as defined in claim 6, wherein said bell crank includes a short arm extending vertically and a long arm extending horizontally, a horizontal row of holes in the end of the short arm, a horizontal row of holes in the main lever, a swivel pin engaging in a hole of the main lever aligned with a hole of the bell crank, a tongue on the end of the long arm, and a pair of opposed regulating screws on the main lever between which the tongue is received to adjust the bell crank about the swivel pin.
Claim 9
Dependent Claim
37 words
A measuring instrument as defined in claim 7, wherein the spacing between the holes in each row is equal while the spacing of the holes in the main lever is different from that of the bell crank.
Claim 10
Dependent Claim
33 words
A measuring instrument as defined in claim 8, wherein the spacing of the holes in the bell crank is one and one-half that of the spacing of the holes in the main lever.
Claim 11
Dependent Claim
22 words
A measuring instrument as defined in claim 9, and means for locking the bell crank and main lever together following an adjustment.
Claim 12
Dependent Claim
29 words
A measuring instrument as defined in claim 10, and means between the movable end of the spring and the knife bearing connection to the resist torsion of the spring.
Claim 13
Dependent Claim
21 words
A measuring instrument as defined in claim 11, wherein said torsion resisting means is in the form of a steel band.
References Cited (Backward Citations)
NL72108C
Cited
DE151061C
Cited
DE197260C
Cited
DE90481C
Cited
AT82134B
Cited
US1946775A
Cited
US3647010A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |