Patent US4067412A successfully refreshed from Google Patents.
US4067412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating ladder
Assignee: Individual
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Filing: 1976-12-23
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Granted: 1978-01-10
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Expires: 1996-12-23
Abstract
Abstract A rigid guide assembly having two inwardly disposed facing channel members secured to the stringer of a stationary platform and one end of a support member attached at each outward side of the top portion of the channel member. The other end of each support member is secured to the decking of the stationary platform. A vertical ladder secured to a floating base is disposed between the flanges of the two channel members thereby restricting the lateral movement of the ladder and float while allowing vertical movement as the water level changes.
Inventors
- 👤 Earle B. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:15
CPC Classifications
E; E02; E02B; E02B3/00; E02B3/04; E02B3/06; E02B3/068; E06; E06C; E06C9/00; E06C9/06; E06C9/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
103 words
A floating ladder for use with a member of a stationary platform comprising: a rigid guide assembly removably connectable to the stationary platform, said guide assembly including support means and guide means; said support means attached to said guide means and removably connectable to the member of the stationary platform; a generally vertical ladder secured to a floating base, said generally vertical ladder movably connected to said guide means whereby said generally vertical ladder and said floating base are restricted in lateral movement while allowing said generally vertical ladder to move up and down as said floating base moves with water level changes.
Claim 2
Dependent Claim
103 words
A floating ladder for use with a member of a stationary platform comprising: a rigid guide assembly removably connectable to the stationary platform, said guide assembly including support means and guide means; said support means attached to said guide means and removably connectable to the member of the stationary platform; a generally vertical ladder secured to a floating base, said generally vertical ladder movably connected to said guide means whereby said generally vertical ladder and said floating base are restricted in lateral movement while allowing said generally vertical ladder to move up and down as said floating base moves with water level changes.
Claim 3
Dependent Claim
20 words
A floating ladder as set forth in claim 1, wherein; said guide means includes two inwardly disposed generally vertical members.
Claim 4
Dependent Claim
47 words
A floating ladder as set forth in claim 2 wherein; said generally vertical ladder includes side rails and intermediate steps; said generally vertical guide means are inwardly disposed facing channel members with flange portion partially surrounding said side rails to guide said generally vertical ladder's vertical movement.
Claim 5
Dependent Claim
39 words
A floating ladder as set forth in claim 3 wherein; said support means positioned between said generally vertical guide means members and a deck connecting plate, said deck connecting plate removably connectable to a member of a stationary platform.
Claim 6
Dependent Claim
47 words
A floating ladder as set forth in claim 3 wherein: said rigid guide assembly connected to a stationary platform; the bottom of said vertical members positioned above the water level to allow said ladder and floating base to be raised vertically out of the water for maintenance.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |