US2363784A - Collapsible crane or platform tower - Google Patents

Collapsible crane or platform tower Download PDF

Info

Publication number
US2363784A
US2363784A US492638A US49263843A US2363784A US 2363784 A US2363784 A US 2363784A US 492638 A US492638 A US 492638A US 49263843 A US49263843 A US 49263843A US 2363784 A US2363784 A US 2363784A
Authority
US
United States
Prior art keywords
beams
toggle
collapsible
crane
platform
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US492638A
Inventor
Gerich Valentine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US492638A priority Critical patent/US2363784A/en
Application granted granted Critical
Publication of US2363784A publication Critical patent/US2363784A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/065—Scissor linkages, i.e. X-configuration
    • B66F7/0666—Multiple scissor linkages vertically arranged
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/22—Lazy-tongs mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
    • B66F7/0608—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement driven by screw or spindle

Definitions

  • a t This invention relates to a telescopic and collapsible apparatus, particularly to an extension crane-hoist of a toggle formation for use in con- 7 struction work of erecting buildings of medium height, and is also adaptable for use aslife say ing tower in burning buildings.
  • the mainobject of this invention is the progressive arrangement of the toggle beams, that i are extendable instantly by a power driven screwfrod operable on a turntable mountedupon a chassis ,or frame of a truck, caterpillar or ,upon
  • Thefextendable beams are instantly collapsible by reversing the extendable operation, in which all of the beams fold themselveswithin ⁇ each other.
  • Another feature of this invention is the crane
  • Another feature'of this invention is the adap--.
  • Another feature of this invention is the adaptation of mounting a cage orbox-like car on the top portion of the toggle beams, which is so arranged the toggle arms supporting the car are slidable underneath, in their inwardly and outwardly movement during the extendableandcollapsible operationsof the crane-hoist.
  • a further feature of this invention is the adaptability of using the togglecrane-hoist as an amusement park attraction, inwhicli a possible height of several hundred feet may be the 'extendable observation position, the tower being rotatable, so the passengers in the car may look in alldirections.
  • a further feature of this invention is, its use for a lookout tower for the armed forces, and also for a search-light, and for a ,crow-nesttoweron warships.
  • Figure 1 shows a side elevational view of the telescopic crane-hoist in its extendable position.
  • Figure 2 is an end view of the same Figure 1.
  • Figure 3 shows the top portion of the toggle beams provided with cage or box-like car, for use as part of fire life saving apparatus, or as an amusement park attraction.
  • FIG. 4 shows a similar view, except a fire water nozzle is mounted in place of the cage or box-like car.
  • Figure 5 shows the togglebeams collapsible from the extended position as shown in Figure l
  • Figure 6 shows diagrammatically toggle beams having the same length.
  • the numeral I indicates the complete crane- -hoist apparatus, having toggle beams in pairs l-l; 2-2; 3-3;?4-4; 5-5; 6-6; allof which are pivoted together, at 1-1 and 8-8.
  • These'togglebeams are so set and arranged progressively that the top beams 6-6 are about one-half theflength ofthelowermost base beams I-l operable onthe turntable platform P,thus providin a pyramid construction.
  • the topbarms 9-9 pivoted ,to th beams 6-6 have a boom or hoistingbell-crank shape men her ⁇ 10 mounted onto the tubingshaft Mb there'- with theboom lllhavingpulleysfl and I 3 for cables 14 and I5 connecting to pulleys l6 and H on shaft Hh thence to the winches I9 and 20, respectively, which, are power driven by the motors MI and M2 adjacent the base of thecranehoist;
  • the boom itself is operatedbythe cable .23 secured at 24 to the end of the shortarm 25 of the boom It, the cable connecting to apulley 26 outside the turntable and adjacent the lower- ,most toggle beams l-l thence upwardlyto the pulley 21pm theshort arm 25 and thence down to the winch 28 which ispower driven by a motor and 6-6.
  • the beams are progressively set within each other inwardly so asto form a brace-like or pyramid assembly when. they are extended as shown in Figures land 2'.
  • the to gle beams maybe made otherwise then shown, but it is believed that the beams shown are suitable for side strains or thrusts.
  • the cable I has'ja light duty hook Ma
  • the cable I5 has a heavy duty hook [5a and doubled wound cable arrangement as shown, and the boom 10 may be of any suitable length, hence thereof.
  • the lowermost toggle beams 1-! are pivoted toth blocks 30 and 3
  • the threaded shafts or portions are operated by a motor M4 of the reversible type, or by separate motors, if so desired, by means of a Worm 34 and worm wheel 34a.
  • the screw rods are mounted onto a bed-plate or frame member 35 in bearings 36 and 31, the frame member being rotatable on rollers 39, thus providing a turntable in which a king bolt 40 secures them together pivotally to the frame platform P of the caterpillar C shown in dot and dash lines, which may be a large tractor or truck, if so desired.
  • toggle beams are adapted to be collapsible within each other as shown in Figure 5, and suitable means not shown may be provided for taking up the slack of the cables during the collapsible. operation, and for the pull during the extending oper ation of the crane-hoist I.
  • the operation controls may be arranged within ,a .cab C oroutside of the turntable, in which means will, be provided? for the rotatable movementfor the cables, but as, it is now shown the cables I 4. and I5 have their winches and motor drive within thefbeams and upon, the turntable platform P, and the cable 23 is outside thereof.
  • FIG. 3 a box-like-car is arranged in fixed bearings, 41 and 48 on each side portions of the car, rods 50 being secured therein, onto which is slidable blocks 5
  • a center bar 5,5 extending through, a fixed'bearing 56 on for use between car and building B all shown in dotedashlines. in. Figure 3.
  • the car maybe interchangeable with-a water gun .or nozzle 65 shown in Figure 4,, or either may be permanently arranged asshown.
  • the 'base may be spread over aplot of about 50 feetsquare, moreorless,
  • the lowermosttoggle beams adapted to be mounted onto a suitable platform
  • the uppermost toggle beams adapted to, support either a box-like car, or an open platform, or a bell-crank boom, all ofwhich are interchangeable with each other onto said uppermost toggle beams
  • said toggle beamsf adapted to extended toany desired height and to be collapsible to their lower most positions
  • said toggle beams may be ofsufficient number of sections whereby said uppermost l like car, provides an amusement device or toylike device, whereby said toggle beamsare constructed in proportion therewith,v and when the bell-crank boom is used, the, same proportions are maintained for their respectivepurposes as hoisting crane apparatus or a toy-like device;
  • said uppermost toggle beams provided with a center bar that is slidable in bearing of part being supported thereon, whereby said part maybe held in a neutral and certain position during'the extending and collapsing of said toggle'beams.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Transportation (AREA)
  • Jib Cranes (AREA)

Description

Nov. 28, 1944. v. GERICH COLLAfSIBLE CRANE 0R PLATFORIL TOWER 2 Sheets-Shea 1 Filed June 28, 1943 mmvrom VFILEN TINE GER/DH 4., ATIQRNEX.
V. GERICH COLLAPSIBLE CRANE OR PLATFORM TOWER 2 Sheets-Sheet 2 Filed June 28, 1943 XINVEN-TOR. VfiLE/VT/NE'EER/CH BY Patented Nov. 28, 1944 COLLAPSIBLE CRANE on PLATFORM TOWER Valentine GerichQNeW York, N. Y. i i i Application June 28, 1943, Serial No. 492,538
claims. (o1. 212-55) A t This invention relates to a telescopic and collapsible apparatus, particularly to an extension crane-hoist of a toggle formation for use in con- 7 struction work of erecting buildings of medium height, and is also adaptable for use aslife say ing tower in burning buildings.
, t The mainobject of this invention, is the progressive arrangement of the toggle beams, that i are extendable instantly by a power driven screwfrod operable on a turntable mountedupon a chassis ,or frame of a truck, caterpillar or ,upon
the ground. Thefextendable beams are instantly collapsible by reversing the extendable operation, in which all of the beams fold themselveswithin {each other.
orboom part of the crane-hoist, which is adaptable to hoist lightand heavy work, controllable by cables andpower. driven winches operated at the baseof theapparatus.
Another feature of this invention, is the crane Another feature'of this invention, is the adap--.
tationof utilizing the top portion of the toggle beamsfor mountingthereon a water nozzle of a fire tower apparatus.
Another feature of this invention,is the adaptation of mounting a cage orbox-like car on the top portion of the toggle beams, which is so arranged the toggle arms supporting the car are slidable underneath, in their inwardly and outwardly movement during the extendableandcollapsible operationsof the crane-hoist.
A further feature of this invention, is the adaptability of using the togglecrane-hoist as an amusement park attraction, inwhicli a possible height of several hundred feet may be the 'extendable observation position, the tower being rotatable, so the passengers in the car may look in alldirections. f A further feature of this invention is, its use for a lookout tower for the armed forces, and also for a search-light, and for a ,crow-nesttoweron warships.
. Other featuresof this invention will appear as the description proceeds in the following specification, in which Figure 1 shows a side elevational view of the telescopic crane-hoist in its extendable position.
Figure 2 is an end view of the same Figure 1. Figure 3 shows the top portion of the toggle beams provided with cage or box-like car, for use as part of fire life saving apparatus, or as an amusement park attraction.
' Figure 4 shows a similar view, except a fire water nozzle is mounted in place of the cage or box-like car.
i the broken portions of each short and long arm t tel- mediate beams 2, 3,4, 5 and 6, the same length if sodesired.
Figure 5 shows the togglebeams collapsible from the extended position as shown in Figure l,
Figure 6 shows diagrammatically toggle beams having the same length. i
Referring to the drawings, the numeral I indicates the complete crane- -hoist apparatus, having toggle beams in pairs l-l; 2-2; 3-3;?4-4; 5-5; 6-6; allof which are pivoted together, at 1-1 and 8-8. These'togglebeams are so set and arranged progressively that the top beams 6-6 are about one-half theflength ofthelowermost base beams I-l operable onthe turntable platform P,thus providin a pyramid construction. [The topbarms 9-9 pivoted ,to th beams 6-6, have a boom or hoistingbell-crank shape men her} 10 mounted onto the tubingshaft Mb there'- with theboom lllhavingpulleysfl and I 3 for cables 14 and I5 connecting to pulleys l6 and H on shaft Hh thence to the winches I9 and 20, respectively, which, are power driven by the motors MI and M2 adjacent the base of thecranehoist; The boom itself is operatedbythe cable .23 secured at 24 to the end of the shortarm 25 of the boom It, the cable connecting to apulley 26 outside the turntable and adjacent the lower- ,most toggle beams l-l thence upwardlyto the pulley 21pm theshort arm 25 and thence down to the winch 28 which ispower driven by a motor and 6-6. are spacediand retained apart by tubing .spacersor shafts Ila, l lb, |lc, 11d, lleandlllf respectively, and the end portions of beams are similarly connected by tubing 'shaftsl'a and 8d.
As noted'in FigureZ the beams are progressively set within each other inwardly so asto form a brace-like or pyramid assembly when. they are extended as shown in Figures land 2'. The to gle beams maybe made otherwise then shown, but it is believed that the beams shown are suitable for side strains or thrusts. However, the toggle beamstfrom the uppermost beams 9, down to the lowermost beams l, and including the inmaybe all of The cable I has'ja light duty hook Ma, and the cable I5 has a heavy duty hook [5a and doubled wound cable arrangement as shown, and the boom 10 may be of any suitable length, hence thereof.
The lowermost toggle beams 1-! are pivoted toth blocks 30 and 3|, which are operable by the rotatable right and left threaded shafts or The beams 6 3-3, 4-4; 5:5
rods or rodportions 32 and 33, respectively. The threaded shafts or portions are operated by a motor M4 of the reversible type, or by separate motors, if so desired, by means of a Worm 34 and worm wheel 34a. The screw rods are mounted onto a bed-plate or frame member 35 in bearings 36 and 31, the frame member being rotatable on rollers 39, thus providing a turntable in which a king bolt 40 secures them together pivotally to the frame platform P of the caterpillar C shown in dot and dash lines, which may be a large tractor or truck, if so desired.
In Figure 2,-it will be noted that the toggle beams are adapted to be collapsible within each other as shown in Figure 5, and suitable means not shown may be provided for taking up the slack of the cables during the collapsible. operation, and for the pull during the extending oper ation of the crane-hoist I.
The operation controls may be arranged within ,a .cab C oroutside of the turntable, in which means will, be provided? for the rotatable movementfor the cables, but as, it is now shown the cables I 4. and I5 have their winches and motor drive within thefbeams and upon, the turntable platform P, and the cable 23 is outside thereof.
In Figure 3, .a box-like-car is arranged in fixed bearings, 41 and 48 on each side portions of the car, rods 50 being secured therein, onto which is slidable blocks 5| and52 pivoted to the end of the upper; toggle beams Be-6. A center bar 5,5 extending through, a fixed'bearing 56 on for use between car and building B all shown in dotedashlines. in. Figure 3. The car maybe interchangeable with-a water gun .or nozzle 65 shown in Figure 4,, or either may be permanently arranged asshown. I
When the extended. toggle beams are used for an. amusement device, the 'base may be spread over aplot of about 50 feetsquare, moreorless,
adapted to support a platform, which may be interchangeable with a box-like car, or a crane hoisting boom, means to operate said lowertoggle beams for extending all of said toggle beams to any desired height, and further means to lower said toggle beams to their collapsible and normal positions. a r
'2. In a collapsible crane apparatus and platform tower of the character described, including "a plurality of toggle beams arranged in pairs suit- .ablyspaced apart and connectable at the center -An "extendable gangfway bridge member may or ma not be part of the car,
and anchor cables may be added for safety from wind or gales. However, this toggle arrangement .is' instantly collapsible, within a two or three seconds for emergencies, An altitude of 300 to 500 feetv is possible with this crane-hoist comprising toggle-beams, and theobservationcar may hold thirty people, and when the. device is, extended tohigher position it may be rotated around at least once, or morenif so desired.
Havingthusdescribed'm-y invention, what I claim as new and to secure by Letters Patent oil the United States of America, is as follows:
1 Ina collapsible. crane apparatus of the character described,v including a plurality of toggle beams arranged in, pairs and. spaced apart and connectably secured together pivotally at their center and end portions, said toggle beams spaced apart by tubing; members mounted onto tie-rods and end portions by tubing spacers all of which are tied together by tie-rods and lock-nuts therewith, the lowermost toggle beams securely mounted onto a rotatable platform, the uppermost toggle beams supporting a bell-crank boom, the boom and provided with pulleys for" cables with hoist hooks attheir ends thereof, said bell-crankboom operative by suitable power means adjacent said lower platform, further means to extend all of said toggle beamsln their extendable. positions to any desired height". and further means to lower said toggle beams to a collapsible position onto said lower platform, and said bell-cranklboom adaptable for being interchangeable for a boxlike car, or a water nozzle platform, is so desired.
3. In a collapsible tower platform ofthe character described, including a plurality of toggle beams of not less than six sections arranged. in
pairs, each" pair and section spaced apart by tubing and tie-rods with lock-nuts, at their center;
and end portions, the lowermosttoggle beams adapted to be mounted onto a suitable platform, the uppermost toggle beams adapted to, support either a box-like car, or an open platform, or a bell-crank boom, all ofwhich are interchangeable with each other onto said uppermost toggle beams, said toggle beamsf adapted to extended toany desired height and to be collapsible to their lower most positions, said toggle beamsmay be ofsufficient number of sections whereby said uppermost l like car, provides an amusement device or toylike device,, whereby said toggle beamsare constructed in proportion therewith,v and when the bell-crank boom is used, the, same proportions are maintained for their respectivepurposes as hoisting crane apparatus or a toy-like device;
. 5. In a collapsible tower platform apparatus of that extend through said toggle beams which] are pivotally securedonto the ends of said tie-rods by lock-nuts, thereby holding all of said to gle the characterdescrib'ed, and as defined in claim 4,
said uppermost toggle beams provided with a center bar that is slidable in bearing of part being supported thereon, whereby said part maybe held in a neutral and certain position during'the extending and collapsing of said toggle'beams.
GERICH.
US492638A 1943-06-28 1943-06-28 Collapsible crane or platform tower Expired - Lifetime US2363784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US492638A US2363784A (en) 1943-06-28 1943-06-28 Collapsible crane or platform tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492638A US2363784A (en) 1943-06-28 1943-06-28 Collapsible crane or platform tower

Publications (1)

Publication Number Publication Date
US2363784A true US2363784A (en) 1944-11-28

Family

ID=23957020

Family Applications (1)

Application Number Title Priority Date Filing Date
US492638A Expired - Lifetime US2363784A (en) 1943-06-28 1943-06-28 Collapsible crane or platform tower

Country Status (1)

Country Link
US (1) US2363784A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166630B (en) * 1960-01-25 1964-03-26 Boerje Fonden Aircraft barrier
US3726417A (en) * 1971-08-13 1973-04-10 Fmc Corp Boom extension control system
FR2377354A1 (en) * 1977-01-12 1978-08-11 Smith Raymond PIVOTING ARROW ELEVATOR
FR2580708A1 (en) * 1985-04-18 1986-10-24 Leblay Alfred VARIABLE HEIGHT LIVING CONSTRUCTION ASSEMBLY
US4664270A (en) * 1983-10-07 1987-05-12 Renner Manufacturing Company Air transportable gantry type crane
EP0389781A1 (en) * 1989-03-29 1990-10-03 August Mayr Lifting platform
US5857648A (en) * 1997-01-28 1999-01-12 Trw Inc. Precision deployable boom assembly
CN104512834A (en) * 2013-09-28 2015-04-15 沈阳新松机器人自动化股份有限公司 Connecting rod type lifting device
US9222277B2 (en) 2013-03-12 2015-12-29 Konecranes Plc Scissors lift assembly for jacking tower
CN105417408A (en) * 2015-12-21 2016-03-23 太原重工股份有限公司 Attached type folding arm crane and mounting method thereof
US9550584B1 (en) * 2010-09-30 2017-01-24 MMA Design, LLC Deployable thin membrane apparatus
US9617130B2 (en) * 2016-02-05 2017-04-11 HVAC—Jack, L.L.C. Mechanical scissor lift
CN106744370A (en) * 2016-12-31 2017-05-31 王金聚 A kind of flexible posture hoisting machine
CN109081244A (en) * 2018-11-02 2018-12-25 嘉兴学院 A kind of automation hanging device
US20200047724A1 (en) * 2018-07-26 2020-02-13 Secure Energy (Onsite Services) Inc. Apparatus and method for wheel-assembly and traction-motor change out
US20200247564A1 (en) * 2017-10-04 2020-08-06 Arianegroup Sas Deployable satellite mast
US11491645B2 (en) * 2019-06-07 2022-11-08 Massachusetts Institute Of Technology Scissor linkage design and method of operation

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1166630B (en) * 1960-01-25 1964-03-26 Boerje Fonden Aircraft barrier
US3726417A (en) * 1971-08-13 1973-04-10 Fmc Corp Boom extension control system
FR2377354A1 (en) * 1977-01-12 1978-08-11 Smith Raymond PIVOTING ARROW ELEVATOR
US4664270A (en) * 1983-10-07 1987-05-12 Renner Manufacturing Company Air transportable gantry type crane
FR2580708A1 (en) * 1985-04-18 1986-10-24 Leblay Alfred VARIABLE HEIGHT LIVING CONSTRUCTION ASSEMBLY
EP0206968A1 (en) * 1985-04-18 1986-12-30 Alfred Le Blay Habitable construction assembly with variable height
EP0389781A1 (en) * 1989-03-29 1990-10-03 August Mayr Lifting platform
US5857648A (en) * 1997-01-28 1999-01-12 Trw Inc. Precision deployable boom assembly
US9550584B1 (en) * 2010-09-30 2017-01-24 MMA Design, LLC Deployable thin membrane apparatus
US9222277B2 (en) 2013-03-12 2015-12-29 Konecranes Plc Scissors lift assembly for jacking tower
CN104512834A (en) * 2013-09-28 2015-04-15 沈阳新松机器人自动化股份有限公司 Connecting rod type lifting device
CN105417408A (en) * 2015-12-21 2016-03-23 太原重工股份有限公司 Attached type folding arm crane and mounting method thereof
US9617130B2 (en) * 2016-02-05 2017-04-11 HVAC—Jack, L.L.C. Mechanical scissor lift
CN106744370A (en) * 2016-12-31 2017-05-31 王金聚 A kind of flexible posture hoisting machine
CN106744370B (en) * 2016-12-31 2019-03-01 保定奥发吊索具制造有限公司 A kind of flexible posture hoisting machine
US20200247564A1 (en) * 2017-10-04 2020-08-06 Arianegroup Sas Deployable satellite mast
US11772825B2 (en) * 2017-10-04 2023-10-03 Arianegroup Sas Deployable satellite mast
US20200047724A1 (en) * 2018-07-26 2020-02-13 Secure Energy (Onsite Services) Inc. Apparatus and method for wheel-assembly and traction-motor change out
CN109081244A (en) * 2018-11-02 2018-12-25 嘉兴学院 A kind of automation hanging device
US11491645B2 (en) * 2019-06-07 2022-11-08 Massachusetts Institute Of Technology Scissor linkage design and method of operation

Similar Documents

Publication Publication Date Title
US2363784A (en) Collapsible crane or platform tower
US2370661A (en) Portable crane
EP0048076A1 (en) Mobile crane structure
US3160289A (en) Missile transporter erector
US4195740A (en) Lift crane support system
US2772004A (en) Portable gantry crane
US3856150A (en) Mobile load handling means, particularly tower cranes
US3202299A (en) Mobile guy derrick and counter balancing crane
US5018630A (en) High-capacity lift crane assembly
US3198345A (en) Crane
US4027441A (en) Arrangement for erecting and dismounting an elongate object having one end articulated to a foundation
GB2122165A (en) Supplementary equipment for use with a self-propelled crane with a telescopic jib
US1897383A (en) Power operated hoist
US1985285A (en) Side-mounted derrick for tractors
US3113681A (en) Crane
US3366251A (en) Climbing crane
US3246769A (en) Crane
US3173549A (en) Material handling device
US3367448A (en) Mobile elevator
US4194638A (en) Ring supported tower crane
CN112209314A (en) A self-propelled fast leaping and hoisting integrated machine
US3357573A (en) Cranes
CN210885019U (en) Truck crane with bridge function and bridge deck and rail car
GB383305A (en) Improvements in and relating to portable scaffolding and like elevated-platform devices
CN207811121U (en) A kind of wheel type hydraulic crane