Patent US3243503A successfully refreshed from Google Patents.
US3243503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wiring trough having hinged or completely removable cover
Assignee: Hoffman Engineering Corp
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Filing: 1963-08-09
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Granted: 1966-03-29
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Expires: 1983-08-09
Abstract
No abstract record available.
Inventors
- 👤 Ronald R Burley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:05
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/04; H02G3/0406; H02G3/0418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN IMPROVED WIREWAY STRUCTURE OF THE TYPE HAVING A TROUGH PORTION AND A COVER REMOVABLY COVERING SAID THROUGH PORTION TO MAKE AN ACCESSIBLE CLOSED WIREWAY, THE IMPROVEMENT COMPRISING: COOPERATING STRUCTURE ON SAID TROUGH AND COVER FOR MOVABLY SECURING SAID COVER TO SAID TROUGH; SAID COOPERATING STRUCTURE INCLUDING SAID COVER HAVING SLOTS IN IT NEAR ONE EDGE; CLIPS PIVOTALLY SECURED TO SAID TROUGH AND EACH CLIP ADJUSTABLE TO TWO POSITIONS ABOUT THE PIVOT POINT; SAID COOPERATING STRUCTURE INCLUDING LUGS; SAID LUGS, WHEN SAID CLIPS ARE ADJUSTED ABOUT THEIR PIVOT POINTS TO ONE POSITION, BEING REMOVABLY ENGAGED IN SAID COVER SLOTS; WHEREBY A DEMOUNTABLE RELATIONSHIP IS ESTABLISHED BETWEEN SAID TROUGH AND SAID COVER; SAID CLIPS, WHEN ADJUSTED ABOUT THEIR PIVOT POINTS TO THEIR SECOND POSITION, FORMING IN COOPERATION WITH AN ADJACENT PORTION OF SAID TROUGH WALL, LOOPS ENGAGED IN SAID COVER SLOTS; WHEREBY A HINGED RELATIONSHIP IS ESTABLISHED BETWEEN SAID COVER AND SAID TROUGH.
Claim 2
Dependent Claim
152 words
AN IMPROVED WIREWAY STRUCTURE OF THE TYPE HAVING A TROUGH PORTION AND A COVER REMOVABLY COVERING SAID THROUGH PORTION TO MAKE AN ACCESSIBLE CLOSED WIREWAY, THE IMPROVEMENT COMPRISING: COOPERATING STRUCTURE ON SAID TROUGH AND COVER FOR MOVABLY SECURING SAID COVER TO SAID TROUGH; SAID COOPERATING STRUCTURE INCLUDING SAID COVER HAVING SLOTS IN IT NEAR ONE EDGE; CLIPS PIVOTALLY SECURED TO SAID TROUGH AND EACH CLIP ADJUSTABLE TO TWO POSITIONS ABOUT THE PIVOT POINT; SAID COOPERATING STRUCTURE INCLUDING LUGS; SAID LUGS, WHEN SAID CLIPS ARE ADJUSTED ABOUT THEIR PIVOT POINTS TO ONE POSITION, BEING REMOVABLY ENGAGED IN SAID COVER SLOTS; WHEREBY A DEMOUNTABLE RELATIONSHIP IS ESTABLISHED BETWEEN SAID TROUGH AND SAID COVER; SAID CLIPS, WHEN ADJUSTED ABOUT THEIR PIVOT POINTS TO THEIR SECOND POSITION, FORMING IN COOPERATION WITH AN ADJACENT PORTION OF SAID TROUGH WALL, LOOPS ENGAGED IN SAID COVER SLOTS; WHEREBY A HINGED RELATIONSHIP IS ESTABLISHED BETWEEN SAID COVER AND SAID TROUGH.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |