US3687308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ship{40 s loading ramp
Assignee: PER FAGERLUND
•
Filing: 1970-10-07
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Granted: 1972-08-29
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Expires: 1990-10-07
Abstract
Abstract A loading ramp pivotally connected to a ship comprises two unitary side beams and a travelling track carried thereby. This travelling track is composed of two parts of which an inner one extends outwards from the ship along part of the length of the beams to which it is permanently fixed. An outer part of the travelling track is hingedly connected to the inner part and is longer than the difference between the inner part and the length of the beams. The outer part is further provided with laterally extending portions upon which the ends of the beams will rest when the ramp is folded down.
Inventors
- 👤 Lennart Apelstrand
- 👤 Per Fagerlund
- 👤 Stig Jarl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:54
CPC Classifications
B; B63; B63B; B63B27/00; B63B27/14; B63B27/143
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A loading ramp pivotably connected to a ship and comprising two unitary side beams extending to a quay or other support and a travelling track carried thereby, in which the travelling track is composed of an inner part extending from the ship outwards along part of the length of the beams and is fixedly connected thereto, and an outer part hingedly connected to the inner part but free from the beams in such a manner that the outer part, when the ramp is swung to a vertical position, may be folded down alongside the inner part, said outer part being longer than the difference between the inner part and the length of the beams and said outer part being provided with laterally extending portions upon which the ends of the beams will rest in the folded down position of the ramp.
Claim 2
Dependent Claim
141 words
A loading ramp pivotably connected to a ship and comprising two unitary side beams extending to a quay or other support and a travelling track carried thereby, in which the travelling track is composed of an inner part extending from the ship outwards along part of the length of the beams and is fixedly connected thereto, and an outer part hingedly connected to the inner part but free from the beams in such a manner that the outer part, when the ramp is swung to a vertical position, may be folded down alongside the inner part, said outer part being longer than the difference between the inner part and the length of the beams and said outer part being provided with laterally extending portions upon which the ends of the beams will rest in the folded down position of the ramp.
Claim 3
Dependent Claim
51 words
The loading ramp according to claim 1, in which an end portion of the outer track part is formed as a hinged flap, which independently of the inclination of the beams in relation to a quay or other fixed support will occupy a position corresponding to the plane of the latter.
Claim 4
Dependent Claim
34 words
The loading ramp according to claim 1, in which the free ends of the beams are provided with adjustable sliding members designed for cooperation with the laterally extending portions of the outer track part.
Claim 5
Dependent Claim
104 words
The loading ramp according to claim 1, designed to be attached to a stern position of the ship with its pivot axis at an angle to the longitudinal axis of the ship, in which an end portion of the outer track part forming an elongation of the beams is broader than the distance between the beams at the ends thereof remote from the ship, and at least one of the beams, adjacent to the ship, Being bent sidewards sufficient to permit the broadened portion of the outer track part to be brought in between the beams, when the ramp is raised to vertical position.
Claim 6
Dependent Claim
75 words
The loading ramp according to claim 1, in which at least two winches are used for operating the ramp, one of said winches being designed to raise and to lower the beam structure, and one winch to govern the outer track part, the first mentioned winch being further designed in a manner common with mooring winches to maintain a constant strain in the pertaining wire, which is sufficient to carry the weight of the ramp.
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) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |