US3768666A - Telescoping-type stacker crane - Google Patents
Telescoping-type stacker crane Download PDFInfo
- Publication number
- US3768666A US3768666A US00245717A US3768666DA US3768666A US 3768666 A US3768666 A US 3768666A US 00245717 A US00245717 A US 00245717A US 3768666D A US3768666D A US 3768666DA US 3768666 A US3768666 A US 3768666A
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- mast
- load carriage
- members
- load
- mast section
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- 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
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
Definitions
- This invention relates to overhead electric traveling cranes having a downward extending guide for a vertically movable load carrier.
- Traveling cranes comprising a telescoping or collapsible guide assembly or mast connected to the underside of an overhead movable support for a vertically movable load carrier are known.
- Various constructions have been employed for raising and lowering load carriages and telescoping the respective guide or mast sections, but such prior art devices are generally relatively complex in construction and expensive to manufacture and/or are not suited for certain operations. In many instances they are unreliable in operation.
- One of the more commercially successful cranes of the character to which the present invention relates is the subject of US. Pat. No. 3,111,227.
- the present invention provides a new and improved material handling device, simple inconstruction, reliable in operation and having an overhead support to which a telescopic or collapsible mast or guide assembly comprising a plurality of relatively movable mast sections are connected with the top section connected to the overhead support and a load carriage movable vertically along the bottom section in combination with means for raising the movable mast sections sequentially from top to bottom and subsequently raising the load carriage relative to the bottom section by flexible means connected to a take up device adjacent the upper end of the mast and reeved sequentially about pulleys at the upper ends of the respective movable mast sections, beginning with the uppermost movabe mast section and the load carrier and intermediate pulleys at the top of the mast and terminating at the upper end of the mast.
- FIG. 1 is a front elevational view of a material handling apparatus embodying the present invention.
- FIG. 2 is a fragmentary side elevational view of the apparatus of FIG. 1 looking from the right.
- the truck wheels 32 ride on the tread portions of the runway rails and support the crane for movement along the runway rails.
- a movable support which in the preferred and illustrated embodiment is a trolley or carrier C, extends between the spaced beams 24, 26 of the bridge B and is movable along the beams 24, 26.
- the carrier C includes a frame 34 having wheels 36 which support opposite ends of the frame on the horizontal flange portions or treads of the beams 24, 26.
- The-carrier C is provided with a motor 40 for driving one set of the wheels 36 to move the carrier along the beams 24, 26.
- a vertically extending revolvable mast assembly D is connected to the carrier C and is movable therewith.
- the mast assembly D is rotatably suppended from the frame of the carrier C by a trunnion pin assembly 42, one end of which is secured to the upper frame assembly 44 of the mast assembly and the other end of which is secured to a support assembly 46 mounted between transverse members of the frame of the carrier C.
- the mast assembly is preferably rotated by a motor, not shown, which rotates a pinion gear 50 in mesh with a bull gear 52 which is suitably secured to the upper frame assembly 44.
- the frame of the carrier C is provided with a plurality of rollers 54 which engage the upper side of the upper frame assembly 44 of the revolvable mast assembly to stabilize the mast assembly.
- the revolvable mast assembly D includes a plurity of relatively movable mast sections.
- One of the upper mast sections 60 herein sometimes referred to as the primary mast or primary mast section, is secured to and extends vertically from the upper frame assembly 44 y and is formed by spaced vertical members 62, 64 con-
- the present invention is shown as embodied in a traveling crane supported on a crane runway formed by spaced rails, one of which is shown at 20.
- the runway for the crane may be in an area having rows of bins or shelves for storing articles to be handled by the crane.
- the crane designated generally as A, includes a bridge B which spans the distance between the spaced crane runway and is movable along the runway.
- the bridge B comprises spaced rail beams 24, 26 that extend transversely to the runway rails and end trucks 30 connected to opposite ends of the rail beams 24, 26.
- the secondary mast 66 is operatively connected to the primary mast 60 for vertical movement relative to the primary mast and is adapted to telescope over the primary mast.
- the secondary mast 66 includes spaced vertical members 70, 72, disposed adjacent the opposite sides of the primary mast outwardly of the members 62, 64, respectively.
- Each of the members 70, 72 supports two pairs of wheels 76, 78 and 80, 82 which engage opposite flanges of the adjacent one of the members 62, 64 to guide the movement of the secondary mast with respect to the primary mast.
- the vertical spacing of the pairs of wheels 76, 78 and 80, 82 prevents rocking movement of the secondary mast assembly about a horizontal axis when the latter is extended to form an extension of the primary mast.
- the secondary mast is provided with rollers 84, 86. which engage the web portion of the members 62, 64 of the primary mast to better guide the movement of the secondary mast with respect to the primary mast.
- the mast assembly D functions as a support for a vertically movable load carriage E and guides the load carriage in its vertical movement.
- the load, carriage D comprises a pair of channel members 90, 92 spaced outwardly of the members 70, 72 of the second mast, connected together by channel members 94, 96, both of which extend transversely ofthe primary and secondary masts.
- Channel member 94 is preferably welded directly to the spaced channel members 90, 92 and the member 96 is preferably secured to the spaced chnannel members 90, 92 by spacer members one of which is welded to each channel member 90, 92 and to one end of the channel 96.
- End plates 100, 102, brackets 104, 106, and stops 108, 110 are secured to the channel 94 and project below the channel member.
- a shaft 114 below and parallel to the channel member 94 extends through aligned apertures in the end plates 100, 102, brackets 104, 106, and stops 108, 110.
- the load carriage E is guided in its vertical movement relative to the mast assembly D by a plurality of rollers mounted on the load carriage which engages the vertical members 70, 72 of the secondary mast 66.
- These rollers comprise vertically spaced pairs of wheels 120, 122 and 124, 126 carried by the channel members 70, 72 of the carriage E and which engage the flanges of the members 70, 72 of the secondary mast 66, and a plurality of rollers 130, 132' also carried by the channel members 90, 92, respectively, and which engage the web portion of members 70, 72.
- the vertically movable carriage E carries load engaging mechanism which engages the material being handled to move the material as desired.
- This load engaging mechanism may be of any suitable nature dictated by the type of material being handled, for example, a grab, bucket, or hook.
- the load engaging mechanism shown in the drawings includes a plurality of fork members 140, some of which are shorter than others as can be seen in FIG. 2, pivotally mounted on shaft 114 for limited movement in a clockwise direction to the position shown in FIG. 2, so that certain fork members which are not being used may be pivoted vertically out of operative position.
- the intermediate fork members are preferably adjustable lengthwise of the shaft 61 to vary the spacing between the fork members. It is apparent that the fork members at the ends of the shaft 114, being in snug engagement with the sides of end plates 100, 102 and adjacent stops 108, 110 cannot be slid on shaft 114, which is true also of the center fork member.
- the load carriage E and the load engaging mechanism, fork members 140, connected thereto are raised and lowered by motor 150 connected to the upper frame assembly 44 and the upper end of primary mast 60.
- the motor 150 drives a pair of sprocket-type pulleys 152, 154 rotatably supported in the upper end of the primary mast, through suitable gearing 156.
- the secondary mast 66 and the load carrier E are raised and by flexible members or chains 160, 162 trained over the sprockets 152, 154, respectively, then underneath a second pair of sprocket-type pulleys 166, 168 rotatably supported in the upper end of the secondary mast 66; then over a third pair of sprockets 170, 172, rotatably supported in the upper end of the primary mast 60; then underneath a fourth pair of sprockets 174, 176, rotatably supported in the load carriage E, and secured to brackets 180, 182 welded to the upper end of the primary mast.
- Rotation of the motor 150 will rotate sprockets 152, 154, and will either raise or lower a secondary mast 66 and the load carriage'E, depending upon the direction of the rotation of the motor 150.
- the motor 150 is operated to raise the secondary mast and the load carriage the flexible members or chains form loops between the chanels 62, 64 of the primary mast. Suitable boxes or guides are utilized to contain and guide the chain loops.
- a chain guard is provided at the upper end of the mast assembly to keep foreign matter from becoming fouled in the chains.
- the construction of the load carriage E and the secondary mast 66 are such that the weight of the load carriage is greater than that of the secondary mast so that during initial operation of motor 150 to raise the load carriage E from its lowermost position the secondary mast and load carriage will move upwardly as a unit relative to the primary mast. After the secondary mast has reached its upper limit of movement upon a part 190 thereof striking the underside of a support bracket 192 for the motor 150 the load carriage moves upwardly relative to the secondry mast. Assuming that the motor 150 is of the constant speed type the load carriage will move in an upwardly direction along the secondary mast 66 at twice the speed at which the combined secondary mast and load carrier moved until the member 96 on the load carriage engages the member 190.
- the load carriage first moves in a downwardly direction relative to the secondary mast until the member 96 engages a member 194 at the lower end of the secondary mast. Thereafter the load carriage and secondary mast move as a unit relative to the primary mast at half the previous speed until members 200, 202 secured to the guide members 70, 72 of the secondary mast engage abutment members 204, 206 secured to the members 62, 64 of the primary mast.
- the load carriage and secondary mast as well as the other elements of the traveling crane shown are controlled by an operator who rides in an operators cab F and manipulates controls located on a control panel G.
- the operators cab will also be raised and lowered because the operators cab and the control panel are connected to members 190, 194 forming part of the secondary mast.
- Applicants invention as shown and described in this specification is embodied in a power actuated crane, it will be understood by those skilled in the art that the Applicants invention may be constructed so that certain of the powered operations are performed manually.
- the hoist motor for elevating the load carriage and the secondary mast may be replaced by a manually operable hoist, if such is deemed desirable.
- wire cables, etc. can be substituted for the flexible sprockettype chains shown and that the takeup means for the flexible members may be a drum rather than the sprocket-type pulleys shown.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Warehouses Or Storage Devices (AREA)
Abstract
A stacker crane comprising a multi-section telescoping or collapsible mast connected for rotation about its vertical axis to the underside of a trolley of an overhead crane and having a load carriage movable vertically along the lower section, power means for moving the respective sections of the mast and the load carriage vertically in a predetermined sequence comprising a flexible member connected to a take-up means at the top of the mast and subsequently reeved about pulley means connected to the upper end of the movable mast sections and the load carriage with the intermediate reaches reeved about pulleys at the top of the mast and having its other end connected to the upper end of the mast.
Description
United States Patent Pamer Oct. 30, 1973 TELESCOPING-TYPE STACKER CRANE [21] Appl. No.: 245,717
Primary Examiner-Even C. Blunk Assistant ExaminerJames L. Rowland AttorneyJames T. Hoffman 57 ABSTRACT A stacker crane comprising a multi-section telescoping or collapsible mast connected for rotation about 212/128 187/9 its vertical axis to the underside of a trolley of an over- [5l] Int. Cl. B66C 19/00 head crane and havinga load carriage movable m [58] Field of Search 187/9, 10, ll; Cally along the owe, section, power means f moving 212/127 128 the respective sections of the mast and the load carriage vertically in a predetermined sequence compris- [56] References (med ing a flexible member connected to a take-up means UNITED STATES PATENTS at the top of the mast and subsequently reeved about 3,111,227 11/1963 Lofquist 212/128 p y means connected to the pp end of the 2,913,226 11/1959 Pritchard 187/9 able mast sections and the load carriage with the inter- 1,977,815 /1934 Abbe 187/11 mediate reaches reeved about pulleys at the top of the 3,414,086 l2/l968 Ulinski 187/9 a t and having its other end connected to the upper end of the mast.
1 Claim, 2 Drawing Figures a m FY 26 36 $4, 54, 42 ,54 36 I c 44 I: 5Z l I l6l l ll l52- 5 1 SHEET 2 [IF 2 Fig. 2
TELESCOPING-TYPE STACKER CRANE FIELD OF INVENTION This invention relates to overhead electric traveling cranes having a downward extending guide for a vertically movable load carrier.
PRIOR ART Traveling cranes comprising a telescoping or collapsible guide assembly or mast connected to the underside of an overhead movable support for a vertically movable load carrier are known. Various constructions have been employed for raising and lowering load carriages and telescoping the respective guide or mast sections, but such prior art devices are generally relatively complex in construction and expensive to manufacture and/or are not suited for certain operations. In many instances they are unreliable in operation. One of the more commercially successful cranes of the character to which the present invention relates is the subject of US. Pat. No. 3,111,227.
SUMMARY OF INVENTION The present invention provides a new and improved material handling device, simple inconstruction, reliable in operation and having an overhead support to which a telescopic or collapsible mast or guide assembly comprising a plurality of relatively movable mast sections are connected with the top section connected to the overhead support and a load carriage movable vertically along the bottom section in combination with means for raising the movable mast sections sequentially from top to bottom and subsequently raising the load carriage relative to the bottom section by flexible means connected to a take up device adjacent the upper end of the mast and reeved sequentially about pulleys at the upper ends of the respective movable mast sections, beginning with the uppermost movabe mast section and the load carrier and intermediate pulleys at the top of the mast and terminating at the upper end of the mast.
Further objects and advantages of the invention will be apparent to those skilled in the art to which it relates from the following description of the preferred embodiment made with reference to the accompanying drawings, forming a part hereof.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front elevational view of a material handling apparatus embodying the present invention; and
FIG. 2 is a fragmentary side elevational view of the apparatus of FIG. 1 looking from the right.
DESCRIPTION OF THE PREFERRED EMBODIMENT The truck wheels 32 ride on the tread portions of the runway rails and support the crane for movement along the runway rails. A movable support, which in the preferred and illustrated embodiment is a trolley or carrier C, extends between the spaced beams 24, 26 of the bridge B and is movable along the beams 24, 26. The carrier C includes a frame 34 having wheels 36 which support opposite ends of the frame on the horizontal flange portions or treads of the beams 24, 26. The-carrier C is provided with a motor 40 for driving one set of the wheels 36 to move the carrier along the beams 24, 26.
A vertically extending revolvable mast assembly D is connected to the carrier C and is movable therewith. The mast assembly D is rotatably suppended from the frame of the carrier C by a trunnion pin assembly 42, one end of which is secured to the upper frame assembly 44 of the mast assembly and the other end of which is secured to a support assembly 46 mounted between transverse members of the frame of the carrier C. The mast assembly is preferably rotated by a motor, not shown, which rotates a pinion gear 50 in mesh with a bull gear 52 which is suitably secured to the upper frame assembly 44. The frame of the carrier C is provided with a plurality of rollers 54 which engage the upper side of the upper frame assembly 44 of the revolvable mast assembly to stabilize the mast assembly.
The revolvable mast assembly D includes a plurity of relatively movable mast sections. One of the upper mast sections 60, herein sometimes referred to as the primary mast or primary mast section, is secured to and extends vertically from the upper frame assembly 44 y and is formed by spaced vertical members 62, 64 con- Referring to the drawings, the present invention is shown as embodied in a traveling crane supported on a crane runway formed by spaced rails, one of which is shown at 20. The runway for the crane may be in an area having rows of bins or shelves for storing articles to be handled by the crane.
The crane, designated generally as A, includes a bridge B which spans the distance between the spaced crane runway and is movable along the runway. The bridge B comprises spaced rail beams 24, 26 that extend transversely to the runway rails and end trucks 30 connected to opposite ends of the rail beams 24, 26.
stituting the sides of the primary mast section. Another of the mast sections 66, herein sometimes referred to as the secondary mast or secondary mast section, is operatively connected to the primary mast 60 for vertical movement relative to the primary mast and is adapted to telescope over the primary mast. The secondary mast 66 includes spaced vertical members 70, 72, disposed adjacent the opposite sides of the primary mast outwardly of the members 62, 64, respectively. Each of the members 70, 72 supports two pairs of wheels 76, 78 and 80, 82 which engage opposite flanges of the adjacent one of the members 62, 64 to guide the movement of the secondary mast with respect to the primary mast.
The vertical spacing of the pairs of wheels 76, 78 and 80, 82 prevents rocking movement of the secondary mast assembly about a horizontal axis when the latter is extended to form an extension of the primary mast.
In addition to the wheels 76, 78, 80, 82, the secondary mast is provided with rollers 84, 86. which engage the web portion of the members 62, 64 of the primary mast to better guide the movement of the secondary mast with respect to the primary mast.
The mast assembly D functions as a support for a vertically movable load carriage E and guides the load carriage in its vertical movement. The load, carriage D comprises a pair of channel members 90, 92 spaced outwardly of the members 70, 72 of the second mast, connected together by channel members 94, 96, both of which extend transversely ofthe primary and secondary masts. Channel member 94 is preferably welded directly to the spaced channel members 90, 92 and the member 96 is preferably secured to the spaced chnannel members 90, 92 by spacer members one of which is welded to each channel member 90, 92 and to one end of the channel 96. End plates 100, 102, brackets 104, 106, and stops 108, 110 are secured to the channel 94 and project below the channel member. A shaft 114 below and parallel to the channel member 94 extends through aligned apertures in the end plates 100, 102, brackets 104, 106, and stops 108, 110.
The load carriage E is guided in its vertical movement relative to the mast assembly D by a plurality of rollers mounted on the load carriage which engages the vertical members 70, 72 of the secondary mast 66. These rollers comprise vertically spaced pairs of wheels 120, 122 and 124, 126 carried by the channel members 70, 72 of the carriage E and which engage the flanges of the members 70, 72 of the secondary mast 66, and a plurality of rollers 130, 132' also carried by the channel members 90, 92, respectively, and which engage the web portion of members 70, 72.
The vertically movable carriage E carries load engaging mechanism which engages the material being handled to move the material as desired. This load engaging mechanism may be of any suitable nature dictated by the type of material being handled, for example, a grab, bucket, or hook. The load engaging mechanism shown in the drawings includes a plurality of fork members 140, some of which are shorter than others as can be seen in FIG. 2, pivotally mounted on shaft 114 for limited movement in a clockwise direction to the position shown in FIG. 2, so that certain fork members which are not being used may be pivoted vertically out of operative position. The intermediate fork members are preferably adjustable lengthwise of the shaft 61 to vary the spacing between the fork members. It is apparent that the fork members at the ends of the shaft 114, being in snug engagement with the sides of end plates 100, 102 and adjacent stops 108, 110 cannot be slid on shaft 114, which is true also of the center fork member.
The load carriage E and the load engaging mechanism, fork members 140, connected thereto are raised and lowered by motor 150 connected to the upper frame assembly 44 and the upper end of primary mast 60. The motor 150 drives a pair of sprocket- type pulleys 152, 154 rotatably supported in the upper end of the primary mast, through suitable gearing 156. The secondary mast 66 and the load carrier E are raised and by flexible members or chains 160, 162 trained over the sprockets 152, 154, respectively, then underneath a second pair of sprocket- type pulleys 166, 168 rotatably supported in the upper end of the secondary mast 66; then over a third pair of sprockets 170, 172, rotatably supported in the upper end of the primary mast 60; then underneath a fourth pair of sprockets 174, 176, rotatably supported in the load carriage E, and secured to brackets 180, 182 welded to the upper end of the primary mast. Rotation of the motor 150 will rotate sprockets 152, 154, and will either raise or lower a secondary mast 66 and the load carriage'E, depending upon the direction of the rotation of the motor 150. When the motor 150 is operated to raise the secondary mast and the load carriage the flexible members or chains form loops between the chanels 62, 64 of the primary mast. Suitable boxes or guides are utilized to contain and guide the chain loops. A chain guard is provided at the upper end of the mast assembly to keep foreign matter from becoming fouled in the chains.
The construction of the load carriage E and the secondary mast 66 are such that the weight of the load carriage is greater than that of the secondary mast so that during initial operation of motor 150 to raise the load carriage E from its lowermost position the secondary mast and load carriage will move upwardly as a unit relative to the primary mast. After the secondary mast has reached its upper limit of movement upon a part 190 thereof striking the underside of a support bracket 192 for the motor 150 the load carriage moves upwardly relative to the secondry mast. Assuming that the motor 150 is of the constant speed type the load carriage will move in an upwardly direction along the secondary mast 66 at twice the speed at which the combined secondary mast and load carrier moved until the member 96 on the load carriage engages the member 190.
During the lowering of the load carriage, the load carriage first moves in a downwardly direction relative to the secondary mast until the member 96 engages a member 194 at the lower end of the secondary mast. Thereafter the load carriage and secondary mast move as a unit relative to the primary mast at half the previous speed until members 200, 202 secured to the guide members 70, 72 of the secondary mast engage abutment members 204, 206 secured to the members 62, 64 of the primary mast. If it is desirable to have the load carriage E move at constant speed throughout its entire travel, this can be readily accomplished by substituting a two-speed motor for the single speed motor, referred to, and having the sped of the motor automatically changed to half-speed when the secondary mast is at its upper limit of travel as by the use of a limit switch connected to the underside of the frame assembly 44 and engageable by a part of the secondary mast as the secondary mast reaches its upper limit of travel.
The load carriage and secondary mast as well as the other elements of the traveling crane shown are controlled by an operator who rides in an operators cab F and manipulates controls located on a control panel G. As the secondary mast is raised and lowered the operators cab will also be raised and lowered because the operators cab and the control panel are connected to members 190, 194 forming part of the secondary mast.
While the Applicants invention as shown and described in this specification is embodied in a power actuated crane, it will be understood by those skilled in the art that the Applicants invention may be constructed so that certain of the powered operations are performed manually. For example, the hoist motor for elevating the load carriage and the secondary mast may be replaced by a manually operable hoist, if such is deemed desirable. It will also be apparent that wire cables, etc. can be substituted for the flexible sprockettype chains shown and that the takeup means for the flexible members may be a drum rather than the sprocket-type pulleys shown.
' It is also understood that although the Applicant's invention has been described and shown embodied in an overhead traveling crane having a revolvable two section telescopic mast, that the mast may comprise three or more sections and that the mast may be supported on any movable overhead support and in material handling devices not having the specific structure shown and described.
While a preferred form of the invention has been describedin considerable detail, it will be apparent that the invention is not limited to the construction shown or the uses referred to and it is my intention to cover all adaptatons, modifications, and changes which come within the practice of those skilled in the art to which the invention relates and the scope of the appended I greater weight than said second mast section operatively connected to said second mast section for vertical movement relative thereto; and flexible means operatively connected to said overhead support than successively reeved about pulley means connected to said load carrige means, pulley means connected to said overhead support, pulley means connected to said second mast section, and thereafter being connected to a takeup means.
UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent N0. 3,768,666 Dated October 30, 1973 Inventor(s) Karl A Pamer It is certified that error appears in the aboveidentified patent and that said LettersPatent are hereby corrected as shown below:
Col. 2, line 28, change "plurity" to ---plurality;
Col. 4. line 27, change "sped" to --spee.d-.---
Signed and sealed this 23rd day of July 197A.
(SEAL) o Attest:
MCCOY M. GIBSON, JR. Attesting Officer C. MARSHALL DANN Commissioner of Patents
Claims (1)
1. A device of the class described comprising: a movable overhead support; a first mast section secured to said overhead support and extending downwardly therefrom; a second mast section operatively connected to said first mast section for vertical movement relative thereto and extendable relative to the lower end of said first mast section; load carriage means of greater weight than said second mast section operatively connected to said second mast section for vertical movement relative thereto; and flexible means operatively connected to said overhead support than successively reeved about pulley means connected to said load carrige means, pulley means connected to said overhead support, pulley means connected to said second mast section, and thereafter being connected to a takeup means.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US24571772A | 1972-04-20 | 1972-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3768666A true US3768666A (en) | 1973-10-30 |
Family
ID=22927792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00245717A Expired - Lifetime US3768666A (en) | 1972-04-20 | 1972-04-20 | Telescoping-type stacker crane |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3768666A (en) |
| JP (1) | JPS4919546A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3876039A (en) * | 1973-01-29 | 1975-04-08 | Jr Sherman W Bushnell | Mechanical lift truck |
| FR2357446A1 (en) * | 1976-03-25 | 1978-02-03 | Bygg Och Transportekonomie Ab | MATERIAL HANDLING SYSTEM |
| FR2588843A1 (en) * | 1985-10-18 | 1987-04-24 | Hydro Materiels | Installation for handling loads |
| DE9313755U1 (en) * | 1993-09-11 | 1993-11-18 | A. Reker Maschinenfabrik und Baggerbau GmbH, 32791 Lage | Pallet transport device |
| US7624967B1 (en) * | 2006-04-19 | 2009-12-01 | Par Systems, Inc. | Opposed-rope hoist driven telescoping mast |
| CN101417769B (en) * | 2007-10-22 | 2010-06-09 | 中色科技股份有限公司 | Conveying round trip trolley apparatus for aluminium strip rolling mill sleeve barrel |
| CN107985882A (en) * | 2016-10-26 | 2018-05-04 | 村田机械株式会社 | Suspension type stakcer crane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1977815A (en) * | 1931-01-29 | 1934-10-23 | Elwell Parker Electric Co | Industrial truck |
| US2913226A (en) * | 1952-09-29 | 1959-11-17 | Jack D Pritchard | Rock-drilling machine |
| US3111227A (en) * | 1961-05-10 | 1963-11-19 | Cleveland Crane Eng | Stacker crane |
| US3414086A (en) * | 1966-08-19 | 1968-12-03 | Eaton Yale & Towne | Plural upright mechanism |
-
1972
- 1972-04-20 US US00245717A patent/US3768666A/en not_active Expired - Lifetime
-
1973
- 1973-04-20 JP JP48044263A patent/JPS4919546A/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1977815A (en) * | 1931-01-29 | 1934-10-23 | Elwell Parker Electric Co | Industrial truck |
| US2913226A (en) * | 1952-09-29 | 1959-11-17 | Jack D Pritchard | Rock-drilling machine |
| US3111227A (en) * | 1961-05-10 | 1963-11-19 | Cleveland Crane Eng | Stacker crane |
| US3414086A (en) * | 1966-08-19 | 1968-12-03 | Eaton Yale & Towne | Plural upright mechanism |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3876039A (en) * | 1973-01-29 | 1975-04-08 | Jr Sherman W Bushnell | Mechanical lift truck |
| FR2357446A1 (en) * | 1976-03-25 | 1978-02-03 | Bygg Och Transportekonomie Ab | MATERIAL HANDLING SYSTEM |
| FR2588843A1 (en) * | 1985-10-18 | 1987-04-24 | Hydro Materiels | Installation for handling loads |
| DE9313755U1 (en) * | 1993-09-11 | 1993-11-18 | A. Reker Maschinenfabrik und Baggerbau GmbH, 32791 Lage | Pallet transport device |
| US7624967B1 (en) * | 2006-04-19 | 2009-12-01 | Par Systems, Inc. | Opposed-rope hoist driven telescoping mast |
| CN101417769B (en) * | 2007-10-22 | 2010-06-09 | 中色科技股份有限公司 | Conveying round trip trolley apparatus for aluminium strip rolling mill sleeve barrel |
| CN107985882A (en) * | 2016-10-26 | 2018-05-04 | 村田机械株式会社 | Suspension type stakcer crane |
| US10239741B2 (en) * | 2016-10-26 | 2019-03-26 | Murata Machinery, Ltd. | Suspension-type stacker crane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4919546A (en) | 1974-02-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: SHEPARD NILES CRANE & HOIST CORPORATION,NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MCNEIL CORPORATION;REEL/FRAME:004849/0814 Effective date: 19840301 Owner name: SHEPARD NILES CRANE & HOIST CORPORATION, SCHUYLER Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MCNEIL CORPORATION;REEL/FRAME:004849/0814 Effective date: 19840301 |
|
| AS | Assignment |
Owner name: BARCLAYSAMERICAN/BUSINESS CREDIT, INC.,CONNECTICUT Free format text: SECURITY INTEREST;ASSIGNOR:S.N. OPERATING CO., INC., (TO BE RENAMED "SHEPARD NILES, INC.");REEL/FRAME:004871/0682 Effective date: 19880229 Owner name: BARCLAYSAMERICAN/BUSINESS CREDIT, INC., 111 FOUNDE Free format text: SECURITY INTEREST;ASSIGNOR:S.N. OPERATING CO., INC., (TO BE RENAMED "SHEPARD NILES, INC.");REEL/FRAME:004871/0682 Effective date: 19880229 |
|
| AS | Assignment |
Owner name: S.N. OPERATING CO., INC.,PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHEPARD NILES INC.;REEL/FRAME:004865/0893 Effective date: 19880229 Owner name: SHEPARD NILES, INC.,NEW YORK Free format text: CHANGE OF NAME;ASSIGNOR:SHEPARD NILES CRANE & HOIST CORPORATION;REEL/FRAME:004865/0886 Effective date: 19850328 Owner name: S.N. OPERATING CO., INC., 1100 LIGONIER STREET, LA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SHEPARD NILES INC.;REEL/FRAME:004865/0893 Effective date: 19880229 Owner name: SHEPARD NILES, INC. Free format text: CHANGE OF NAME;ASSIGNOR:SHEPARD NILES CRANE & HOIST CORPORATION;REEL/FRAME:004865/0886 Effective date: 19850328 |
|
| AS | Assignment |
Owner name: SHEPARD NILES, INC. Free format text: CHANGE OF NAME;ASSIGNOR:S.N. OPERATING CO., INC.;REEL/FRAME:004966/0583 Effective date: 19880224 |
|
| AS | Assignment |
Owner name: SHEPARD NILES INC., 250 NORTH GENESEE ST., MONTOUR Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:BARCLAYS BUSINESS CREDIT, INC., 111 FOUNDERS PLAZA, SUITE 1200 EAST HARTFORD CONNECTICUT 28217;REEL/FRAME:005110/0076 Effective date: 19890526 Owner name: FIDELCOR BUSINESS CREDIT CORPORATION Free format text: SECURITY INTEREST;ASSIGNOR:SHEPARD NILES INC.;REEL/FRAME:005186/0189 Effective date: 19890531 |
|
| AS | Assignment |
Owner name: UNIBANK PLC, A CORPORATION OF THE UNITED KINGDOM, Free format text: SECURITY INTEREST;ASSIGNOR:SHEPARD NILES INC., A NY CORPORATION;REEL/FRAME:005732/0083 Effective date: 19901031 Owner name: UNIBANK PLC Free format text: SECURITY INTEREST;ASSIGNORS:SHEPARD NILES INC.;CONNER, HERBERT T.;NELSON, LAWRENCE L.;REEL/FRAME:005736/0072;SIGNING DATES FROM 19901031 TO 19910416 |
|
| AS | Assignment |
Owner name: UNIDANMARK ASSETS COMPANY (FORMERLY NAMED UNIBANK Free format text: SECURITY INTEREST;ASSIGNOR:SHEPARD NILES INC.;REEL/FRAME:007432/0477 Effective date: 19901031 |