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US3993198A Expired / Lapsed US ⏱️ 0.0 years remaining

Telescopic column crane for stores in particular for cargo holds

Assignee: West Pomeranian University of Technology
•
Filing: 1975-04-03
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Granted: 1976-11-23
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Expires: 1995-04-03
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Abstract

Abstract A telescopic crane for stores, in particular for cargo holds, designed for transportation and storage of loads placed in stacks or on racks, which consists of a two-girder bridge with the crane movably mounted thereon, and includes a crab with a rotary platform and a telescopic column with a clamp. The telescopic column has a mobile set of members slidable below or above a fixed member. The fixed member is slidably connected with the rotary platform in order that the fixed member may be lowered together with the other members to a level permitting the turning of the platform. The end member of the column has a fork and a movable member forming a clamp, which is slidable along the end member by means of a tie system of guiding, which consists of a winch connected with the fixed member and of lifting and lowering ties wound through all members of the column. In the case of an even number of members, during the movement of these members, the winch is coupled with a driving element for these members. In the case of an odd number of members, the winch is independent. The clamp is provided with a pulley block gear which clamps the load, and is equipped with a ratch that locks the clamp. The two-girder bridge has beams under the track which are of a special design.

Inventors

  • 👤 Mieczyslaw Hann

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 08:10
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/08; B66F9/07

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 167 words
A telescopic column crane for stores, in particular for cargo holds, consisting of a bridge built of a main box girder and an auxiliary single-web girder with said crane mounted for movement on said bridge and comprising a crab with a rotary platform and a telescopic column with a clamp, characterized in that the said telescopic column has a mobile system of distal, medial and proximate members respectively, slidable below or above a fixed member connected slidably with the rotary platform of the crane crab in order that the fixed member may be lowered together with the mobile members to a level permitting the turning of the platform, said distal member being provided with a fork and a movable member forming a clamp means, said clamp means being slidable along this distal member by means of a tie system of guiding, said system of guiding consisting of a winch connected with the fixed member and of lifting and lowering ties wound through all members of the column.
Claim 2
Dependent Claim 167 words
A telescopic column crane for stores, in particular for cargo holds, consisting of a bridge built of a main box girder and an auxiliary single-web girder with said crane mounted for movement on said bridge and comprising a crab with a rotary platform and a telescopic column with a clamp, characterized in that the said telescopic column has a mobile system of distal, medial and proximate members respectively, slidable below or above a fixed member connected slidably with the rotary platform of the crane crab in order that the fixed member may be lowered together with the mobile members to a level permitting the turning of the platform, said distal member being provided with a fork and a movable member forming a clamp means, said clamp means being slidable along this distal member by means of a tie system of guiding, said system of guiding consisting of a winch connected with the fixed member and of lifting and lowering ties wound through all members of the column.
Claim 3
Dependent Claim 93 words
The crane according to claim 1, characterized in that the winch, in the case of an even number of members of the column, is, during the driving of the mobile members, coupled with their element in such a way that the lifting and lowering ties have a speed equalling the relative speed of neighbouring members of the column but of the opposite turn, and at an uneven number of all members of the column the winch of the clamp means is independent and the movement of the clamp means has an arbitrary speed.
Claim 4
Dependent Claim 57 words
The crane according to claim 1, characterized in that the clamp means has a pressure pulley block gear provided with holding-up devices and at least one ratchet, whereby, the catches of the lifting tie and the lowering tie on the clamp means are connected together so that the sum of the lengths of these ties be constant.
Claim 5
Dependent Claim 78 words
The crane according to claim 1, characterized in that the main box girder and the auxiliary single-web girder of the bridge each has a beam under the track comprising: a lower flange integral with a lower flange of the corresponding girder; an upper flange connected for its whole length with a web of the corresponding girder; and a beam web connected with the flanges of the beam and with the web of the corresponding girder by ribs therebetween.

References Cited (Backward Citations)

US2555297A Cited
DE906816C Cited
FR1072041A Cited
DK88452C Cited
US3061111A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-11-23 1980-05-24 1980-11-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-11-23 1984-05-24 1984-11-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-11-23 1988-05-24 1988-11-23 $7700.00 Window Closed / Lapsed

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