Patent US3866157A successfully refreshed from Google Patents.
US3866157A
Expired / Lapsed
US
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Load cell
Assignee: Carl Schenck AG
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Filing: 1973-04-19
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Granted: 1975-02-11
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Expires: 1993-04-19
Abstract
Abstract A load cell has a ring shaped deformation element with a triangular cross section, the apex of the cross section extending outwardly. Thin walled tubes extend in opposite directions between an intermediate section circumferentially joined to the outer edge of the deformation element, and respective coupling flanges. Mechanical-electrical transducers are mounted on the faces of the ring shaped element, or within a bore extending therethrough. One or both of the thin walled tubes may be frustoconical.
Inventors
- 👤 Gottfried Birkholtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:36
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/20; G01L1/22; G01L1/2206; G01L1/2212
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
94 words
A load cell comprising a ring-shaped intermediate member, a pair of tubular members concentric with said intermediate member and extending from said intermediate member in opposite directions at different radii, for transmitting forces to said intermediate member, a ring-shaped deformation member circumferentially connected to said intermediate member and extending inwardly therefrom, whereby axially directed forces in said tubular members are substantially radially outside of said deformation member, and are transmitted to said deformation member by way of said intermediate member, and mechanicalelectrical transducer means on said deformation member radially inwardly of said tubular members.
Claim 2
Dependent Claim
94 words
A load cell comprising a ring-shaped intermediate member, a pair of tubular members concentric with said intermediate member and extending from said intermediate member in opposite directions at different radii, for transmitting forces to said intermediate member, a ring-shaped deformation member circumferentially connected to said intermediate member and extending inwardly therefrom, whereby axially directed forces in said tubular members are substantially radially outside of said deformation member, and are transmitted to said deformation member by way of said intermediate member, and mechanicalelectrical transducer means on said deformation member radially inwardly of said tubular members.
Claim 3
Dependent Claim
23 words
The load cell of claim 1, wherein said tubular members, intermediate member and deformation member are integrally connected to form a single element.
Claim 4
Dependent Claim
13 words
The load cell of claim 1, wherein said tubular members are thin-walled tubes.
Claim 5
Dependent Claim
40 words
The load cell of claim 1, wherein said deformation member is defined by an inner axially extending surface, said mechanical-electrical transducer means comprising transducer elements affixed to surfaces of said deformation member adjacent opposite axial ends of said inner surface.
Claim 6
Dependent Claim
78 words
THe load cell of claim 4, wherein said deformation member has a triangular cross section, one side of said triangular cross sections defining said inner axially extending surface and being parallel to the axis of said deformation member, the apex of said triangular cross section opposite said one side extending outwardly to form a transition with said intermediate section and being located substantially in line with forces transmitted to said intermediate member from one of said tubular members.
Claim 7
Dependent Claim
34 words
The load cell of claim 4, wherein said inner surface is comprised of a cylindrical bore, said deformation member having angular surfaces adjacent said bore, said transducer means being affixed to said angular surfaces.
Claim 8
Dependent Claim
36 words
The load cell of claim 4, wherein said inner surface is comprised of a cylindrical bore, said transducer means comprising separate transducer elements affixed to said inner surface adjacent opposite axial ends of said cylindrical bore.
Claim 9
Dependent Claim
19 words
The load cell of claim 1, wherein one of said tubular members has a shape of a truncated cone.
Claim 10
Dependent Claim
65 words
The load cell of claim 1, wherein both of said tubular members are in the form of truncated cones, further comprising a pair of coupling flanges connected to said tubular members, one of said tubular members tapering inwardly from its respective coupling flange to said intermediate member, the other of said tubular members tapering radially inwardly from said intermediate member to its respective coupling flange.
Claim 11
Dependent Claim
13 words
The load cell of claim 9, wherein said coupling flanges have equal diameters.
Claim 12
Dependent Claim
42 words
The load cell of claim 1, wherein said intermediate member has a neutral surface, said transducer comprising a pair of transducer elements mounted on said deformation member at equal distances and in opposite directions from the neutral surface of said deformation member.
Claim 13
Dependent Claim
29 words
The load cell of claim 1, wherein said tubular members have open ends, said load cell further comprising closure means for closing the open ends of said tubular members.
Claim 14
Dependent Claim
81 words
In a load cell having a ring-shaped deformation member concentrically connected intermediate two force transmitting tubular members for coupling forces on said tubular members to said deformation member, the improvement comprising a concentric intermediate ring-shaped member joined to the outer circumference of said deformation member and to the inner circumference of said tubular members whereby the latter are coupled to said intermediate member at different radii, and mechanical-electrical transducer means coupled to said deformation member radially inwardly of said tubular members.
Claim 15
Dependent Claim
81 words
In a load cell having a ring-shaped deformation member concentrically connected intermediate two force transmitting tubular members for coupling forces on said tubular members to said deformation member, the improvement comprising a concentric intermediate ring-shaped member joined to the outer circumference of said deformation member and to the inner circumference of said tubular members whereby the latter are coupled to said intermediate member at different radii, and mechanical-electrical transducer means coupled to said deformation member radially inwardly of said tubular members.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |