Patent US4399685A successfully refreshed from Google Patents.
US4399685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force and kinetic energy measuring device
Assignee: Delaware Capital Formation Inc
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Filing: 1981-02-09
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Granted: 1983-08-23
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Expires: 2001-02-09
Abstract
Abstract A device for measuring both force and kinetic energy includes a first cylindrical tube with one end closed, which tube is positioned over a calibrated spring that has one of its ends adjacent the closed end of the first tube. The other end of the spring extends beyond the open end of the first tube and is received within a second cylindrical tube mounted to slide over the first tube and having one closed end adjacent the other end of the spring. For measuring kinetic energy an indicator member is positioned about the first tube in such a manner that it is displaceable by contact with the open end of the second tube during compression of the spring and remains on the first tube at the point of maximum displacement when the compression of the spring is relieved. The position of the indicator with respect to the first tube is a measure of the kinetic energy that compressed the spring and the position of the second tube with respect to the first tube is a measure of that static compression force on the spring.
Inventors
- 👤 Richard E. Atkey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:08
CPC Classifications
G; G01; G01L; G01L1/00; G01L1/04; G01L1/042
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
193 words
A device for measuring both force and kinetic energy comprising: a first cylindrical tube having one end closed and the other end open; a calibrated spring positioned within the first tube and having one end adjacent the closed end of the tube, the other end of the spring extending beyond the open end of the first tube; a second cylindrical tube having one end closed, an open end of the second tube sliding over the first tube and the other end of the spring being received within said second tube and positioned adjacent its closed end; and an indicator means positioned about said first cylindrical tube in such a manner that it is displaceable by contact with the open end of the second tube during compression of the spring by movement of the first tube within the second during the initiation of an impact of a particular mass with the device under the influence of a particular force, and remains on the first tube at the point of maximum displacement when the compression of the spring is at least somewhat relieved as it assumes a static position under the influence of the force.
Claim 2
Independent Claim
193 words
A device for measuring both force and kinetic energy comprising: a first cylindrical tube having one end closed and the other end open; a calibrated spring positioned within the first tube and having one end adjacent the closed end of the tube, the other end of the spring extending beyond the open end of the first tube; a second cylindrical tube having one end closed, an open end of the second tube sliding over the first tube and the other end of the spring being received within said second tube and positioned adjacent its closed end; and an indicator means positioned about said first cylindrical tube in such a manner that it is displaceable by contact with the open end of the second tube during compression of the spring by movement of the first tube within the second during the initiation of an impact of a particular mass with the device under the influence of a particular force, and remains on the first tube at the point of maximum displacement when the compression of the spring is at least somewhat relieved as it assumes a static position under the influence of the force.
Claim 3
Dependent Claim
33 words
A device as claimed in claim 1, wherein the first tube is marked with force indications that are read with respect to the static position of the open end of the second tube.
Claim 4
Independent Claim
67 words
A device as claimed in claims 1 or 2, wherein the indicator member is a third tube slidably positioned between said first and second tubes and having a flange at one end which contacts the open end of the second tube, said third tube being marked with kinetic energy indications that are read with respect to the static position of the open end of the second tube.
Claim 5
Dependent Claim
26 words
A device as claimed in claim 3, wherein the third tube is transparent so that force markings on the first tube can be read through it.
Claim 6
Dependent Claim
31 words
A device as claimed in claim 3, wherein the third tube has a slot in its longitudinal direction so that force markings on the first tube can be read through it.
Claim 7
Dependent Claim
45 words
A device as claimed in claim 1 or 2, wherein the indicator member is an elastic band mounted on said first tube and said first tube is additionally marked with kinetic energy indications that are read with respect to the position of said elastic band.
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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) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |