US3735879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dock crane
Assignee: Fives Lille Cail
•
Filing: 1972-02-04
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Granted: 1973-05-29
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Expires: 1992-02-04
Abstract
Abstract The boom of a dock crane is pivoted to a trolley which is displaceably mounted on a mobile frame on the wharf. A support member, such as another trolley or a strut, supports the tackle for the boom intermediate the tackle and the frame. A cable connects the support member to the boom supporting trolley and guide pulleys for the cable are so mounted that the support member is displaced simultaneously in the same direction and at the same speed as the boom supporting trolley and to transmit to the frame the tilting force due to the weight of the boom and any load thereon.
Inventors
- 👤 D Fontenay Aux Roses Grandin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:58
CPC Classifications
B; B65; B65G; B65G67/00; B65G2814/00; B65G2814/03; B65G2814/0397
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
222 words
An apparatus for loading and unloading bulk material into and from the hold of a ship, comprising the combination of 1. a mobile frame mounted on a wharf for movement in a first direction, 2. a pivotal boom extending in a second direction perpendicular to the direction of movement of the mobile frame, 3. a trolley mounted displaceably on the frame for movement thereon in the second direction, (a) one end of the pivotal boom being pivotally mounted on the trolley for pivoting about a horizontal axis, 4. means for receiving and transporting the bulk material carried by the other end of the pivotal boom, 5. means for raising and lowering the pivotal boom by pivoting the boom about the horizontal axis, 6. a support member for the pivotal boom raising and lowering means intermediate said means and the mobile frame for supporting the means on the frame, 7. a flexible elongated coupling element connecting the support member to the trolley, and 8. guide means for the flexible coupling element so mounted on the mobile frame between the support member and the trolley that the support member is displaced simultaneously in the same direction and at the same speed as the trolley, and to transmit to the frame the tilting force due to the weight of the boom and any load thereon.
Claim 2
Independent Claim
222 words
An apparatus for loading and unloading bulk material into and from the hold of a ship, comprising the combination of 1. a mobile frame mounted on a wharf for movement in a first direction, 2. a pivotal boom extending in a second direction perpendicular to the direction of movement of the mobile frame, 3. a trolley mounted displaceably on the frame for movement thereon in the second direction, (a) one end of the pivotal boom being pivotally mounted on the trolley for pivoting about a horizontal axis, 4. means for receiving and transporting the bulk material carried by the other end of the pivotal boom, 5. means for raising and lowering the pivotal boom by pivoting the boom about the horizontal axis, 6. a support member for the pivotal boom raising and lowering means intermediate said means and the mobile frame for supporting the means on the frame, 7. a flexible elongated coupling element connecting the support member to the trolley, and 8. guide means for the flexible coupling element so mounted on the mobile frame between the support member and the trolley that the support member is displaced simultaneously in the same direction and at the same speed as the trolley, and to transmit to the frame the tilting force due to the weight of the boom and any load thereon.
Claim 3
Dependent Claim
18 words
a pivotal boom extending in a second direction perpendicular to the direction of movement of the mobile frame,
Claim 4
Dependent Claim
18 words
a pivotal boom extending in a second direction perpendicular to the direction of movement of the mobile frame,
Claim 5
Dependent Claim
38 words
The apparatus of claim 1, wherein the means for raising and lowering the pivotal boom comprises a windlass and a tackle between the windlass and the other end of the boom, the windlass being mounted above the trolley.
Claim 6
Dependent Claim
25 words
The apparatus of claim 2, wherein the support member is a second trolley mounted displaceably on the frame for movement thereon in the second direction.
Claim 7
Dependent Claim
33 words
a trolley mounted displaceably on the frame for movement thereon in the second direction, (a) one end of the pivotal boom being pivotally mounted on the trolley for pivoting about a horizontal axis,
Claim 8
Dependent Claim
33 words
a trolley mounted displaceably on the frame for movement thereon in the second direction, (a) one end of the pivotal boom being pivotally mounted on the trolley for pivoting about a horizontal axis,
Claim 9
Dependent Claim
17 words
means for receiving and transporting the bulk material carried by the other end of the pivotal boom,
Claim 10
Dependent Claim
17 words
means for receiving and transporting the bulk material carried by the other end of the pivotal boom,
Claim 11
Dependent Claim
14 words
The apparatus of claim 3, wherein the windlass is mounted on the second trolley.
Claim 12
Dependent Claim
16 words
means for raising and lowering the pivotal boom by pivoting the boom about the horizontal axis,
Claim 13
Dependent Claim
16 words
means for raising and lowering the pivotal boom by pivoting the boom about the horizontal axis,
Claim 14
Dependent Claim
13 words
The apparatus of claim 1, further comprising drive means for displacing the trolley.
Claim 15
Dependent Claim
25 words
a support member for the pivotal boom raising and lowering means intermediate said means and the mobile frame for supporting the means on the frame,
Claim 16
Dependent Claim
25 words
a support member for the pivotal boom raising and lowering means intermediate said means and the mobile frame for supporting the means on the frame,
Claim 17
Dependent Claim
33 words
The apparatus of claim 1, wherein the support member is a strut having one end supported on the trolley and the other end connected to the trolley by the flexible elongated coupling element.
Claim 18
Dependent Claim
17 words
The apparatus of claim 6, wherein the one end of the strut is pivoted on the trolley.
Claim 19
Dependent Claim
13 words
a flexible elongated coupling element connecting the support member to the trolley, and
Claim 20
Dependent Claim
13 words
a flexible elongated coupling element connecting the support member to the trolley, and
Claim 21
Dependent Claim
59 words
guide means for the flexible coupling element so mounted on the mobile frame between the support member and the trolley that the support member is displaced simultaneously in the same direction and at the same speed as the trolley, and to transmit to the frame the tilting force due to the weight of the boom and any load thereon.
Claim 22
Dependent Claim
59 words
guide means for the flexible coupling element so mounted on the mobile frame between the support member and the trolley that the support member is displaced simultaneously in the same direction and at the same speed as the trolley, and to transmit to the frame the tilting force due to the weight of the boom and any load thereon.
Claim 23
Dependent Claim
46 words
The apparatus of claim 6, wherein the means for raising and lowering the pivotal boom comprises a windlass mounted on the trolley and a tackle between the windlass and the other end of the boom, the tackle being connected to the other end of the strut.
Claim 24
Dependent Claim
53 words
The apparatus of claim 1, further comprising two gears mounted on the trolley on either side thereof, two racks fixedly mounted on the frame, the gears meshing with the racks and the racks extending in the second direction, and a torsion shaft extending perpendicularly to the second direction and interconnecting the two gears.
Claim 25
Dependent Claim
48 words
The apparatus of claim 1, further comprising a counterweight for balancing a part of the weight of the pivotal boom, a cable whereon the counterweight is suspended and having one end affixed to the pivotal boom, and a guide pulley for the cable mounted on the support member.
Claim 26
Dependent Claim
43 words
The apparatus of claim 10, wherein the other end of the cable supporting the counterweight is affixed to the trolley, and the path of the cable is parallel to that of the flexible elongated coupling element connecting the support member to the trolley.
Claim 27
Dependent Claim
117 words
The apparatus of claim 1, wherein the means for raising and lowering the pivotal boom comprises a windlass and a tackle between the windlass and the other end of the boom, and further comprising a safety device including a counterweight attached to the tackle, a blocking means for holding the counterweight in a fixed position relative to the windlass under normal operating conditions, a control for inactivating the blocking means in response to a measured load on the boom when the operating conditions are not normal, and a drive means responsive to the control to displace the counterweight downwardly when the measured load is lower than a predetermined, normal value and thus to raise the boom correspondingly.
Claim 28
Dependent Claim
43 words
The apparatus of claim 12, wherein the drive means comprises a gear carried by the counterweight and a rack mounted at a fixed distance from the windlass, the gear meshing with the rack, and the blocking means normally preventing rotation of the gear.
Claim 29
Dependent Claim
19 words
The apparatus of claim 12, wherein the control comprises a dynamometric device mounted on the flexible elongated coupling element.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |