US3576127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilience testing device
Assignee: Individual
•
Filing: 1969-10-20
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Granted: 1971-04-27
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Expires: 1989-10-20
Abstract
Abstract This invention is an automated ball rebound resilience testing system. It is used to measure the resilient behavior of materials at varying temperatures. The apparatus consists of a light source with the beam focused on a photocell. When the light beam is interrupted as objects are dropped through it and rebounded, signals are emitted from the photocell and pass through a pulse amplifier, a counter timer and lastly are recorded on a printer, thus providing data for determining the resilience of the sample.
Inventors
- 👤 Daniel H Weitzel
- 👤 Jerry C Jellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:44
CPC Classifications
G; G01; G01N; G01N3/00; G01N3/40; G01N3/52; G01N2203/00; G01N2203/02; G01N2203/022; G01N2203/0222
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
Apparatus for providing data which can be used to determine the resilience of a material comprising: a sample of said material; a metal object; means for dropping said object on said sample; means for producing a first electrical pulse whose duration is proportional to the time it takes said object to fall through a first predetermined interval in the falling path of said object and for producing a second electrical pulse whose duration is proportional to the time it takes to rebound through a second predetermined interval in the rebounding path of said object, said first and second intervals being equal and at an equal distance from said sample; and means for recording the duration of said first and second electrical pulses whereby the resilience of said material can be determined from said recording.
Claim 2
Dependent Claim
134 words
Apparatus for providing data which can be used to determine the resilience of a material comprising: a sample of said material; a metal object; means for dropping said object on said sample; means for producing a first electrical pulse whose duration is proportional to the time it takes said object to fall through a first predetermined interval in the falling path of said object and for producing a second electrical pulse whose duration is proportional to the time it takes to rebound through a second predetermined interval in the rebounding path of said object, said first and second intervals being equal and at an equal distance from said sample; and means for recording the duration of said first and second electrical pulses whereby the resilience of said material can be determined from said recording.
Claim 3
Dependent Claim
52 words
Apparatus according to claim 8 wherein said means for producing said first and second electrical pulses includes a light beam that traverses the paths of said object at said first and second intervals onto a photocell whereby the object interrupts the light beam to the photocell as the object passes said intervals.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 8 including means for changing the distance from said intervals to said sample.
Claim 5
Dependent Claim
11 words
Apparatus according to claim 8 including means for heating said sample.
Claim 6
Dependent Claim
11 words
Apparatus according to claim 8 including means for cooling said sample.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 8 wherein said means for dropping an object includes means for dropping many objects at a controlled rate.
Claim 8
Dependent Claim
23 words
Apparatus according to claim 1 wherein said metal object is in the shape of a sphere and is unattached to any other object.
References Cited (Backward Citations)
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |