US3820282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic door hinge
Assignee: Kornylak Corp
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Filing: 1972-11-24
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Granted: 1974-06-28
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Expires: 1992-11-24
Abstract
Abstract The disclosure relates to a door for use in marine environments, the door being rotatable about a support frame on which are mounted hinges secured to the door. The door is raised for rotation of the door by means of sliding the door hinges along the support frame to clear obstructions in front of the door. The door movement is provided preferably by a hydraulic cylinder though a manually operated screw or winch or a hydraulic pneumatic or motor driven winch, screw, rack and pinion etc. can be used.
Inventors
- 👤 A Kornylak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
E; E05; E05F; E05F7/00; E05F7/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A door hinge mounting comprising: a wall having an opening therethrough, a guide element fixed to the wall adjacent an edge of the opening, a door for covering the opening, a door support member hinged to said door for relative swinging movements of said door and support, said support member being mounted on said guide member for movement therealong only in a direction parallel to the hinge axis for covering or uncovering at least a portion of the opening, and power means connected to said support member for moving it along the guide element.
Claim 2
Dependent Claim
94 words
A door hinge mounting comprising: a wall having an opening therethrough, a guide element fixed to the wall adjacent an edge of the opening, a door for covering the opening, a door support member hinged to said door for relative swinging movements of said door and support, said support member being mounted on said guide member for movement therealong only in a direction parallel to the hinge axis for covering or uncovering at least a portion of the opening, and power means connected to said support member for moving it along the guide element.
Claim 3
Dependent Claim
20 words
A door hinge mounting according to claim 1 wherein the power means is a hydraulic cylinder secured to said wall.
Claim 4
Dependent Claim
35 words
A door hinge mounting according to claim 2 further including a driving member operated by said cylinder movable parallel to the hinge axis and connected to the door support member for effecting said movement thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |