US2755658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact testing machine
Assignee: Richardson Co
•
Filing: 1954-07-09
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Granted: 1956-07-24
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Expires: 1974-07-09
Abstract
No abstract record available.
Inventors
- 👤 Paul V Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:14
CPC Classifications
G; G01; G01P; G01P21/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN AN APPARATUS FOR TESTING THE IMPACT RESISTANCE OF AN OBJECT BY MEANS OF A FREE FALLING WEIGHT COMPRISING IN COMBINATION A STATIONARY FRAME; A SECOND FRAME VERTICALLY ADJUSTABLE ON SAID STATIONARY FRAME; AN ELECTROMAGNETIC ASSEMBLY SUPPORTED BY AND VERTICALLY ADJUSTABLE ON SAID SECOND FRAME, SAID ELECTROMAGNETIC ASSEMBLY BEING ADAPTED FOR RELEASABLY HOLDING SAID WEIGHT; AN INDEXING ELEMENT ON SAID SECOND FRAME; MEANS INTEGRAL WITH SAID ELECTROMAGNETIC ASSEMBLY RELEASABLY ENGAGEABLE WITH SAID INDEXING ELEMENT, SAID LEAST NAMED MEANS WHEN ENGAGED WITH SAID INDEXING ELEMENT BEING ADAPTED TO RETAIN SAID ASSEMBLY AT THE HEIGHT OF ENGAGEMENT, AND MEANS INTEGRAL WITH SAID ASSEMBLY FOR DISENGAGING SAID LAST NAMED MEANS AND REENGAGING THE SAME WITH SAID INDEXING ELEMENT AT A HIGHER PREDETERMINED VERTICAL INCREMENT, THEREBY DETERMINING THE SUCCESSIVE INCREMENTS OF VERTICAL MOVEMENT OF THE SAID ASSEMBLY.
Claim 2
Dependent Claim
133 words
IN AN APPARATUS FOR TESTING THE IMPACT RESISTANCE OF AN OBJECT BY MEANS OF A FREE FALLING WEIGHT COMPRISING IN COMBINATION A STATIONARY FRAME; A SECOND FRAME VERTICALLY ADJUSTABLE ON SAID STATIONARY FRAME; AN ELECTROMAGNETIC ASSEMBLY SUPPORTED BY AND VERTICALLY ADJUSTABLE ON SAID SECOND FRAME, SAID ELECTROMAGNETIC ASSEMBLY BEING ADAPTED FOR RELEASABLY HOLDING SAID WEIGHT; AN INDEXING ELEMENT ON SAID SECOND FRAME; MEANS INTEGRAL WITH SAID ELECTROMAGNETIC ASSEMBLY RELEASABLY ENGAGEABLE WITH SAID INDEXING ELEMENT, SAID LEAST NAMED MEANS WHEN ENGAGED WITH SAID INDEXING ELEMENT BEING ADAPTED TO RETAIN SAID ASSEMBLY AT THE HEIGHT OF ENGAGEMENT, AND MEANS INTEGRAL WITH SAID ASSEMBLY FOR DISENGAGING SAID LAST NAMED MEANS AND REENGAGING THE SAME WITH SAID INDEXING ELEMENT AT A HIGHER PREDETERMINED VERTICAL INCREMENT, THEREBY DETERMINING THE SUCCESSIVE INCREMENTS OF VERTICAL MOVEMENT OF THE SAID ASSEMBLY.
References Cited (Backward Citations)
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Cited
US1737565A
Cited
US2052357A
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US2281324A
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US2579503A
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GB621804A
Cited
US2531388A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |