Patent US3837222A successfully refreshed from Google Patents.
US3837222A
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Load cell
Assignee: Sands Measurement Corp
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Filing: 1972-08-15
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Granted: 1974-09-24
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Expires: 1992-08-15
Abstract
Abstract A load cell of the beam type having a planar operator member having a pair of parallel longitudinal slots defining a central beam member and a pair of parallel bearing members spaced outwardly of the beam member, the outer ends of the bearing members and of the beam member being integral with one another, the operator member having a pair of laterally outwardly extending support members positionable on a horizontal laterally spaced surface of a support block, the load or force to be measured being applied to the central portion of the beam member which is provided with strain measuring means such as strain gages at locations of flexure of the beam member. The support block may have a pair of transversely extending narrow edges underlying the central portions of the bearing members for preventing torsional movement of the bearing members as the load is applied to the beam member. A modified form of the load cell has an operator member whose support members extend parallel to and longitudinally of the bearing members and are secured thereto by transverse connector members, the support members being secured at opposite ends to horizontal support surfaces of a support block, the connector members and the bearing members engaging transverse narrow edges of the support block whereby the support members may be prestresssed upwardly at their midpoints.
Inventors
- 👤 S Raskin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:26
CPC Classifications
G; G01; G01G; G01G5/00; G01G5/003; G01G3/00; G01G3/12; G01G3/14; G01G3/1402; G01G3/1404; G01G7/00; G01G7/02; G01G9/00; G01G9/005; G01L; G01L1/00; G01L1/04; G01L1/044; G01L1/20; G01L1/22; G01L1/2206; G01L1/2231
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
92 words
A load cell including: a substantially rectangular planar operator member having a pair of parallel longitudinal slots providing a central beam member, a pair of bearing members spaced from and parallel to said beam member and end portions connecting outer ends of said beam and bearing members, said operator member including a pair of support members spaced outwardly of the bearing members and connected at the longitudinally central portions of the bearing members for supporting the operator members, said beam member having a central portion adapted to have a force transmitted thereto.
Claim 2
Dependent Claim
92 words
A load cell including: a substantially rectangular planar operator member having a pair of parallel longitudinal slots providing a central beam member, a pair of bearing members spaced from and parallel to said beam member and end portions connecting outer ends of said beam and bearing members, said operator member including a pair of support members spaced outwardly of the bearing members and connected at the longitudinally central portions of the bearing members for supporting the operator members, said beam member having a central portion adapted to have a force transmitted thereto.
Claim 3
Dependent Claim
43 words
The load cell of claim 1, and a support block disposed below the operator member and having end support portions providing fixed horizontal support surfaces lying in a common horizontal plane, said support members resting on and rigidly secured to said support surfaces.
Claim 4
Dependent Claim
28 words
The load cell of claim 2, wherein said operator member has connector portions of lesser width than said support members connecting the bearing members to said support members.
Claim 5
Dependent Claim
37 words
The load cell of claim 3, wherein said support block has narrow edge surfaces extending inwardly of said support surfaces lying in the said horizontal plane and extending below and engaging said connector members and bearing members.
Claim 6
Dependent Claim
23 words
The load cell of claim 4, wherein the combined widths of said bearing members are equal to the width of said beam member.
Claim 7
Dependent Claim
25 words
The load cell of claim 3, wherein said connector portions partially overlie said support surfaces and extend inwardly of inner ends of said support surfaces.
Claim 8
Dependent Claim
22 words
The load cell of claim 6, wherein said beam member has connector means at said central portion for transmitting a force thereto.
Claim 9
Dependent Claim
26 words
The load cell of claim 7 wherein said connector means comprises a post member having a downwardly opening slot in which said beam member is receivable.
Claim 10
Dependent Claim
20 words
The load cell of claim 8 wherein said post member is secured to the sides of said beam by welds.
Claim 11
Dependent Claim
27 words
The load cell of claim 9, wherein the neutral axis of said beam members extends between and spaced from the top and bottom ends of said welds.
Claim 12
Dependent Claim
124 words
A load cell including: a substantially rectangular planar operator member having a pair of parallel longitudinal slots providing a central beam member, a pair of bearing members spaced from and parallel to said beam member and end portions connecting outer ends of said beam and bearing members, said operator member including a pair of support members spaced outwardly of the bearing members and connected at the longitudinally central portions of the bearing members for supporting the operator member, said beam member having a central portion adapted to have a force transmitted thereto; and a support means disposed below the operator member providing fixed horizontal support surfaces lyng in a common horizontal plane, said support members resting on and rigidly secured to said support surfaces.
Claim 13
Dependent Claim
124 words
A load cell including: a substantially rectangular planar operator member having a pair of parallel longitudinal slots providing a central beam member, a pair of bearing members spaced from and parallel to said beam member and end portions connecting outer ends of said beam and bearing members, said operator member including a pair of support members spaced outwardly of the bearing members and connected at the longitudinally central portions of the bearing members for supporting the operator member, said beam member having a central portion adapted to have a force transmitted thereto; and a support means disposed below the operator member providing fixed horizontal support surfaces lyng in a common horizontal plane, said support members resting on and rigidly secured to said support surfaces.
Claim 14
Dependent Claim
28 words
The load cell of claim 11, wherein said operator member has connector portions of lesser width than said support members connecting the bearing members to said support members.
Claim 15
Dependent Claim
37 words
The load cell of claim 12, wherein Said support means has narrow edge surfaces extending inwardly of said support surfaces lying in the said horizontal plane and extending below and engaging said connector portions and bearing 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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |