Patent US3172603A successfully refreshed from Google Patents.
US3172603A
Expired / Lapsed
US
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Anchoring device
Assignee: Star Expansion Industries Corp
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Filing: 1960-11-16
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Granted: 1965-03-09
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Expires: 1980-11-16
Abstract
No abstract record available.
Inventors
- 👤 Bell Walter
- 👤 William A Eager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:03
CPC Classifications
F; F16; F16B; F16B13/00; F16B13/12; F16B13/124; E; E01; E01B; E01B9/00; E01B9/02; E01B9/04; E01B9/14; F16B2013/007
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
95 words
AN IMPROVED ANCHOR BOLT COMPRISING IN COMBINATION, A BOLT, A PAIR OF MUTUALLY UNSECURED EXPANSION SHIELDS ENGAGEABLE WITH SAID BOLT AND DEFLECTABLE UPON SAID ENGAGEMENT TO CONTACT THE SIDES OF A BORE PROVIDED IN A PRE-STRESSED CONCRETE CROSSTIE, THE SAID EXPANSION SHIELDS BEING CHARACTERIZED BY PLANAR FACES ADAPTED TO BE DISPOSED TRANSVERSELY OF THE SAID PRE-STRESSED CONCRETE CROSSITE WHEREBY THE SAID PLANAR FACES EXERT UPON THE SIDES OF SAID BORE A COMPRESSIVE STRESS PARALLEL TO THE DIRECTION OF PRE-STRESS IN THE SAID CONCRETE CROSSITE, SAID SHIELDS HAVING IDENTICAL THREADS FOR THREADED ENGAGEMENT WITH SAID BOLT.
References Cited (Backward Citations)
US573808A
Cited
US796262A
Cited
US894253A
Cited
US981863A
Cited
US1062000A
Cited
US1248007A
Cited
US2250787A
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US2689687A
Cited
US2875953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-08 | 1968-09-07 | 1969-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-08 | 1972-09-07 | 1973-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-08 | 1976-09-07 | 1977-03-09 | $7700.00 | Window Closed / Lapsed |