US3713333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force measuring apparatus
Assignee: Testing Technology Corp
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Filing: 1971-06-24
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Granted: 1973-01-30
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Expires: 1991-06-24
Abstract
Abstract Force measuring apparatus is described which includes a load spring of unitary construction with a multiple arm spring frame assembly, one arm having a centrally located block which carries a fixedly secured outer winding and the other arm a moveable core within the outer winding, the core being capable of controlled limited axial movement in response to tension or compression forces, such movement thereby providing a signal.
Inventors
- 👤 George W Mac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:21
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/14; G01G; G01G3/00; G01G3/08; G01G7/00; G01L1/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
Force measuring apparatus which comprises an outer unitary frame having a pair of spaced arms of rectangular cross section connected by side walls, said spaced arms each having an inner and outer face, said side walls each having a cross section a plurality of times that of said spaced arms and said spaced arms having their longitudinal axes perpendicular to the longitudinal axes of said side walls, each of said arms having a centrally located block with outer and inner faces offset outwardly from the faces of said arms, said inner faces of said blocks limiting the relative motion of said arms, and signal mans having portions carried by each of said blocks and responsive to the relative movement of said blocks.
Claim 2
Dependent Claim
122 words
Force measuring apparatus which comprises an outer unitary frame having a pair of spaced arms of rectangular cross section connected by side walls, said spaced arms each having an inner and outer face, said side walls each having a cross section a plurality of times that of said spaced arms and said spaced arms having their longitudinal axes perpendicular to the longitudinal axes of said side walls, each of said arms having a centrally located block with outer and inner faces offset outwardly from the faces of said arms, said inner faces of said blocks limiting the relative motion of said arms, and signal mans having portions carried by each of said blocks and responsive to the relative movement of said blocks.
Claim 3
Dependent Claim
122 words
Force measuring apparatus which comprises an outer unitary frame having a pair of spaced arms of rectangular cross section connected by side walls, said spaced arms each having an inner and outer face, said side walls each having a cross section a plurality of times that of said spaced arms and said spaced arms having their longitudinal axes perpendicular to the longitudinal axes of said side walls, each of said arms having a centrally located block with outer and inner faces offset outwardly from the faces of said arms, said inner faces of said blocks limiting the relative motion of said arms, and signal mans having portions carried by each of said blocks and responsive to the relative movement of said blocks.
Claim 4
Dependent Claim
122 words
Force measuring apparatus which comprises an outer unitary frame having a pair of spaced arms of rectangular cross section connected by side walls, said spaced arms each having an inner and outer face, said side walls each having a cross section a plurality of times that of said spaced arms and said spaced arms having their longitudinal axes perpendicular to the longitudinal axes of said side walls, each of said arms having a centrally located block with outer and inner faces offset outwardly from the faces of said arms, said inner faces of said blocks limiting the relative motion of said arms, and signal mans having portions carried by each of said blocks and responsive to the relative movement of said blocks.
Claim 5
Dependent Claim
22 words
Force measuring apparatus as defined in claim 1 in which said blocks have said outer faces for force application with respect thereto.
Claim 6
Dependent Claim
24 words
Force measuring apparatus as defined in claim 2 in which said blocks have said outer faces for application of compression forces with respect thereto.
Claim 7
Dependent Claim
22 words
Force measuring apparatus as defined in claim 2 in which said blocks have connecting members for application of forces in tension thereon.
Claim 8
Dependent Claim
36 words
Force measuring apparatus as defined in claim 1 in which means for limiting block movement is provided which comprises members carried by one of said blocks for engagement with shoulders on the other of said blocks.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |