Patent US4295575A successfully refreshed from Google Patents.
US4295575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface raceway box
Assignee: WALKER SYSTEMS NC
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Filing: 1977-10-13
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Granted: 1981-10-20
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Expires: 1997-10-13
Abstract
Abstract The box has a base for mounting on a surface and a cover secured to the base by screws. A pair of tabs are disposed close to the base end of the cover and each tab captivates a screw. Assembly of cover to base is simplified because the cover can be held in one hand while a screw driver in the other hand turns the screws. Inventory is reduced because a single length of screw is employed irrespective of box depth.
Inventors
- 👤 Charles T. Flachbarth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:27
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/08; H02G3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
389 words
In a surface raceway box of the known type having a flat base and a hollow, open-ended cover to be secured to the base, the base being for use in mounting the box on a building wall or a like surface and the cover having a top and a continuous wall extending away from the top with the outer edge of the wall forming said open-end and the top also having access opening means providing access to the cover interior, the improvement for securing the cover to the base which comprises: a pair of spaced bosses on said base, each boss having a raised section including a hole for receiving the threads of a screw, the bosses being dimentioned so that each raised section is spaced away from the base so as to be located inside said cover when the cover is secured to the base in a position close to said outer edge and substantially spaced away from the underside of said top; a pair of tabs respectively secured to the inside of said cover wall, each tab being located closely adjacent said outer edge and substantially spaced away from the underside of said top and each tab having a screw captured and rotatably mounted thereon, the tabs being located so that when the cover is positioned over the base to be secured thereto the tabs are respectively positioned over and closely adjacent said raised section whereby the screws are respectively aligned with said holes in condition to be turned into threaded engagement for holding the cover secure to the base; said top access opening means and said captured screws being aligned with said holes in condition to be turned into threaded engagement providing for easy assembly of the cover to the base by that a screw driver can extend through said top access opening means and through the cover interior to contact and turn said screws into said threaded engagement; the length of each said screw being made so that when the screw is turned into said threaded engagement the screw extends into the boss less than the full depth of the boss; and said disposition of said tabs closely adjacent said outer edge providing for single length screws to be employed irrespective of the length of said wall taken between said top and said outer edge.
Claim 2
Dependent Claim
389 words
In a surface raceway box of the known type having a flat base and a hollow, open-ended cover to be secured to the base, the base being for use in mounting the box on a building wall or a like surface and the cover having a top and a continuous wall extending away from the top with the outer edge of the wall forming said open-end and the top also having access opening means providing access to the cover interior, the improvement for securing the cover to the base which comprises: a pair of spaced bosses on said base, each boss having a raised section including a hole for receiving the threads of a screw, the bosses being dimentioned so that each raised section is spaced away from the base so as to be located inside said cover when the cover is secured to the base in a position close to said outer edge and substantially spaced away from the underside of said top; a pair of tabs respectively secured to the inside of said cover wall, each tab being located closely adjacent said outer edge and substantially spaced away from the underside of said top and each tab having a screw captured and rotatably mounted thereon, the tabs being located so that when the cover is positioned over the base to be secured thereto the tabs are respectively positioned over and closely adjacent said raised section whereby the screws are respectively aligned with said holes in condition to be turned into threaded engagement for holding the cover secure to the base; said top access opening means and said captured screws being aligned with said holes in condition to be turned into threaded engagement providing for easy assembly of the cover to the base by that a screw driver can extend through said top access opening means and through the cover interior to contact and turn said screws into said threaded engagement; the length of each said screw being made so that when the screw is turned into said threaded engagement the screw extends into the boss less than the full depth of the boss; and said disposition of said tabs closely adjacent said outer edge providing for single length screws to be employed irrespective of the length of said wall taken between said top and said outer edge.
References Cited (Backward Citations)
US1201003A
Cited
US1769379A
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US2622756A
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US2832495A
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US2936092A
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US2968689A
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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) | 1984-10-19 | 1985-04-20 | 1985-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-19 | 1989-04-20 | 1989-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-19 | 1993-04-20 | 1993-10-20 | $7700.00 | Window Closed / Lapsed |