Patent US6756688B2 successfully refreshed from Google Patents.
US4289362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented door for enclosure
Assignee: Ardco Inc
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Filing: 1979-06-12
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Granted: 1981-09-15
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Expires: 1999-06-12
Abstract
Abstract Segmented doors for closing a wide opening in an enclosure where the upper door is hinged to the top of the opening, the lower door is hinged to the bottom of the upper door and a wire bail is provided for the purpose of locking the lower door into a V-like or triangular relationship with the upper door. This V-like structure, composed of the locked-together upper and lower doors, can then be rotated upward to a stable triangular or inverted V-like position atop the roof or top panel of the cabinet.
Inventors
- 👤 Daniel E. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:53
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
173 words
A cabinet having a top, a side and an edge common to the top and side; an opening in the side; upper door means having height H u for opening and closing an upper portion of the opening, said door means having an upper and a lower edge and having a closed and open condition; first hinge means for allowing the upper door to rotate about a line parallel to and substantially adjacent said common edge; lower door means having a height H L for opening and closing a lower portion of the opening, said door means having an upper and lower edge and having a closed and open condition; second hinge means connecting the upper and lower door means for allowing the lower door to rotate up and outwardly from its closed condition, said rotation occurring about a line parallel to and substantially adjacent the lower edge of the upper door; and means for providing access to said opening by positively positioning the doors in an inverted Vee relationship on said top.
Claim 2
Dependent Claim
173 words
A cabinet having a top, a side and an edge common to the top and side; an opening in the side; upper door means having height H u for opening and closing an upper portion of the opening, said door means having an upper and a lower edge and having a closed and open condition; first hinge means for allowing the upper door to rotate about a line parallel to and substantially adjacent said common edge; lower door means having a height H L for opening and closing a lower portion of the opening, said door means having an upper and lower edge and having a closed and open condition; second hinge means connecting the upper and lower door means for allowing the lower door to rotate up and outwardly from its closed condition, said rotation occurring about a line parallel to and substantially adjacent the lower edge of the upper door; and means for providing access to said opening by positively positioning the doors in an inverted Vee relationship on said top.
Claim 3
Dependent Claim
39 words
A cabinet as in claim 1 where the means for positively positioning the doors includes means for locking the lower door into an upright Vee relationship with the upper door while the upper door is in its closed condition.
Claim 4
Dependent Claim
28 words
A cabinet as in claim 1 where the means for positively positioning the doors includes construction where the door height H 1 exceeds door height H u .
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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) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |