JPS62275930A - Loading device - Google Patents
Loading deviceInfo
- Publication number
- JPS62275930A JPS62275930A JP11475886A JP11475886A JPS62275930A JP S62275930 A JPS62275930 A JP S62275930A JP 11475886 A JP11475886 A JP 11475886A JP 11475886 A JP11475886 A JP 11475886A JP S62275930 A JPS62275930 A JP S62275930A
- Authority
- JP
- Japan
- Prior art keywords
- conveyor
- cargo
- container
- conveyer
- loading
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 1
Landscapes
- Loading Or Unloading Of Vehicles (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
（産業上の利用分野）
本発明は、コンテナに複数個の荷物をまとめて積込める
ようにした荷物積込み装置に関する。Detailed Description of the Invention 3. Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a luggage loading device that is capable of loading a plurality of luggage into a container at once.
（従来の技術）
従来この種装置として、特公昭５２−３３８６４号公報
に見られるように、複数個の荷物を前後動自在に支持す
るコンベア台を機台上のガイドレールに沿ってコンテナ
内に進退自在に設け、該コンベア台上に複数個の荷物を
載置した状態でこれをコンベア内に進入させた後、機台
上に設けたストッパ手段によりこれら荷物の退勤を阻止
した状態で該コン４ア台のみを退勤させることにより該
コンベア台を荷物の底面から引抜いてコンテナへの荷積
みを行うようにしたものは知られる。(Prior Art) Conventionally, as shown in Japanese Patent Publication No. 52-33864, a conveyor table that supports a plurality of packages in a forward and backward movement is inserted into a container along a guide rail on the machine. After a plurality of packages are placed on the conveyor platform and entered into the conveyor, a stopper means provided on the platform prevents the packages from leaving the conveyor. It is known that the conveyor table is pulled out from the bottom of the cargo and the cargo is loaded into the container by removing only the four conveyor tables.
（発明が解決しようとする問題点）
上記のものでは、機台にコンベア台の進退機構やストツ
ノに手段を設ける必要があって、機台が大型犬電蓄のも
のとなるため、機台を定位置に固定式に配置せざるを得
す、荷物の積込み場所が機台の定置場所に限定され、ス
ペース的にも制約を受ける問題があり、更に荷積み完了
後に次に荷積みする荷物をコンベア台に載置するが、と
の載置作業の場所や方向が機台との関係で限定されて作
業効率が悪くなり、又この載置作業に要する時間がロス
タイムとなって荷積み作業全体の作業効率も悪くなる問
題がある。(Problems to be solved by the invention) In the above-mentioned machine, it is necessary to provide a mechanism for advancing and retracting the conveyor table and a means for the stopper, and the machine is a large dog electric storage device. It has to be fixedly placed in a fixed position, and the loading area is limited to the fixed location of the aircraft platform, which poses the problem of space constraints.Furthermore, after loading is completed, it is difficult to determine the next load to be loaded. Although the loading process is carried out on a conveyor table, the location and direction of the loading process are limited due to the relationship with the machine platform, resulting in poor work efficiency, and the time required for this loading process results in loss time, resulting in the entire loading process. There is also the problem that the work efficiency of the operator deteriorates.
本発明は、かかる問題点を解決すべく荷物の積み降し作
業を任意の場所で能率良く行い得られるようにした装置
を提供することをその目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a device that can efficiently load and unload cargo at any location in order to solve this problem.
（問題点を解決するだめの手段）
本発明は、上記目的を達成すべく、複数個の荷物を前後
動自在に支持するローラコンベアを取付けたコンベア台
をコンテナ内に進退させて荷物の積込みを行うように１
−だものにおいて、該コンベア台に、該ローラコンベア
上の荷物を前方に押送する押送装置を設けると共に、該
コンベア台の下面にキャスタを取付けて、該コンベア台
をトラクタその他の車両により任意の方向に移動自在と
したことを特徴とする。(Another Means to Solve the Problems) In order to achieve the above object, the present invention allows a conveyor platform equipped with a roller conveyor that supports a plurality of packages in a forward and backward motion to be moved forward and backward into a container to load the packages. 1 to do
- The conveyor table is provided with a pushing device for pushing the load on the roller conveyor forward, and casters are attached to the underside of the conveyor table so that the conveyor table can be moved in any direction by a tractor or other vehicle. It is characterized by being able to move freely.
（作 用）
コンベア台のローラコンベア上に複数個の荷物を載置し
た状態で該コンベア台を車両によりコンテナの背部に移
動し、次いで該コンベア台をコンテナ内に進入させた後
、押送装置を作動させてこれら荷物を全体的に前方に押
送Ｌ７、前端の１番目の荷物をコンベア台の前方に押出
してコンテナ床面に載置する。(Function) With a plurality of packages placed on the roller conveyor of the conveyor stand, the conveyor stand is moved to the back of the container by a vehicle, and then the conveyor stand is advanced into the container, and then the pushing device is turned on. It is activated to push all of the cargo forward L7, and the first cargo at the front end is pushed out to the front of the conveyor table and placed on the container floor.
次いで、コンベア台を荷物１個分後退させて、２番目の
荷物をコンベア台の前方に押出し、これを１番目の荷物
の後部のコンテナ床面に載置し、以下同様の作動でコン
テナ台上の荷物を順次コンテナ床面にａ置し、荷積みを
行う。Next, the conveyor table is moved back by one baggage, the second baggage is pushed out to the front of the conveyor table, and this is placed on the container floor behind the first baggage. The cargo is placed one by one on the container floor and loaded.
荷積み完了後、空のコンベア台を車両によシ荷積みすべ
き荷物のストック場所に移動して、コンベア台への荷物
の載置作業を行うと共に、荷積み作業中に予め荷物を載
置した別のコンベア台をコンテナの背部に移動して、上
記と同様の作動によりコンテナへの荷積みを行う。After loading is completed, the empty conveyor platform is moved to the storage area for the cargo to be loaded onto the vehicle, and the cargo is placed on the conveyor platform, and the cargo is placed in advance during the loading process. Another conveyor table is moved to the back of the container and loaded into the container using the same operation as above.
この場合、コンベア台に取付けたキャスタの働きでコン
ベア台の方向転換を自由に行い得られ、コンテナへの荷
積み場所とコンベア台への荷積み場所とを作業性を考慮
１〜て任意に選定でき、作業能率の向上を図れる。In this case, the direction of the conveyor table can be changed freely by the action of casters attached to the conveyor table, and the loading place to the container and the loading place to the conveyor table can be arbitrarily selected in consideration of workability. It is possible to improve work efficiency.
（実施例）
第１図及び第２図を参照して、（１）はコンテナ、（２
）はコンテナ（１）の床面と同一高さに設けた荷役場の
プラットホーム、（３）は複数個の荷物Ｗを左右２列で
前彼方向に整列載置自在なコンベア台を示し、該コンベ
ア台（３）をプラットホーム（２）からコンテナ（１）
内に進退させて荷物Ｗの積み降しを行うようにした。(Example) With reference to Figures 1 and 2, (1) is a container, (2
) shows a cargo handling platform platform installed at the same height as the floor of the container (1), and (3) shows a conveyor table on which a plurality of cargoes W can be placed in two rows on the left and right in the front direction. Conveyor stand (3) from platform (2) to container (1)
Loading and unloading of cargo W was carried out by moving the vehicle forward and backward.
該コンベア台（３）は、第３図及び第４図に示す如く、
荷物Ｗの底面Ｗｂ両側と中央とに設けた各脚片Ｗａにお
いて荷物Ｗを前後動自在に支持するローラコンベア（４
］を左右方向に並設して５本備えると共に、該コンベア
（４）上の荷物Ｗを前方に押送する押送装置（５）と、
下面のキャスタ（６）とを備えるもので、更に該コンベ
ア台（３）の後端の左右２箇所にジヨイント（力（７）
を突設し、該ジヨイント（力（力に適宜の車両例えば第
１図及び第２図に示す如くトラクタ（８）の前端下部の
左右１対のジヨイント（８ａ） （ｓａ）を着脱自在に
連結し、かくて該トラクタ（８）によシ該コンベア台（
３）を任意の方向に移動自在とした。The conveyor table (3), as shown in FIGS. 3 and 4,
A roller conveyor (4
] A pushing device (5) that includes five parallel conveyor belts arranged in the left and right direction and that pushes the cargo W on the conveyor (4) forward;
It is equipped with casters (6) on the lower surface, and joints (force (7)
A pair of left and right joints (8a) (sa) at the lower front end of a tractor (8) as shown in FIGS. Thus, the tractor (8) moves the conveyor table (
3) can be moved in any direction.
そして、該コンベア台（３）を少なくとも２台用意し、
荷物Ｗを載置した一方のコンベア台（３）をトラクタ（
８）によりコンテナ（１）の背部に位置するプラットホ
ーム（２）上の所定の荷積み位置に移動して、該コンテ
ナ（１）内に進入させ、押送装置（５）の作動による荷
物Ｗの前方への押送と該コンベア台（３）の退勤とで上
記作用の項で説明したように該コンベア台（３）上の荷
物Ｗを前方のものから順次コンテナ（１）の床面に載置
して、コンテナ（１）への荷積み作業を行い、これと併
行して所定の荷物ストック場所で他方のコンベア台（３
）に荷物Ｗを載置し、荷積み完了後、空になった一方の
コツ４フ台（３）を該ストック場所と、他方のコンベア
台（３）を該荷積み位置とに移動して、連続的に能率良
く荷積み作業を行う。Then, at least two of the conveyor stands (3) are prepared,
A tractor (
8) to a predetermined loading position on the platform (2) located at the back of the container (1), enter the container (1), and move the cargo W to the front by the operation of the pushing device (5). As explained in the above operation section, the cargoes W on the conveyor table (3) are sequentially placed on the floor of the container (1) starting from the one in front. Then, the container (1) is loaded, and at the same time, the other conveyor platform (3) is loaded at the designated cargo stocking location.
), and after loading is completed, move one empty four-foot platform (3) to the stocking location and the other conveyor platform (3) to the loading position. , carry out loading work continuously and efficiently.
ここで、コンベア台（３）に設けるローラコンベア（４
）の床面からの高さが高くなると、荷物Ｗをコンテナ（
１）床面に降したとき、この高さ分だけ荷物Ｗとコンテ
ナ（１，１の天井との間に余計に隙間ができて収納効率
が悪くなるため、図示の実施例では。コンテナ台（３）
の上面に荷物Ｗの脚片Ｗａに対応する５条の凹部（３ａ
）を凹設して、該各日部（３ａ）に各ローラコンベア（
４）を取付けると共に、これら凹部（３ａ） （３ａ）
間の各上板（３ｂ）の下面にキャスタ（６）を適宜複数
個取付けるものとし、該キャスタ（６）の存在によるも
該ローラコンベア（４）を可及的低位に配置し得るよう
にして、収納効率の向上を図れるようにした。Here, the roller conveyor (4) installed on the conveyor stand (3)
) becomes higher from the floor, the cargo W is placed in a container (
1) When lowered onto the floor, an extra gap is created between the cargo W and the ceiling of the container (1, 1) by this height, reducing storage efficiency. 3)
There are five recesses (3a
) is recessed, and each roller conveyor (
4) and these recesses (3a) (3a)
A plurality of casters (6) shall be appropriately installed on the lower surface of each upper plate (3b) in between, and the roller conveyor (4) can be placed as low as possible due to the presence of the casters (6). , to improve storage efficiency.
又、前記押送装Ｒ（５）は、該各上板（３ｂ）上に張設
した第５図示の如きフック（５ａ）を有するチェーン（
５ｂ）で構成されるものとし、これを更に詳述するに、
該チェーン（５ｂ）を該コンベア台（３）の後端のドラ
イブスプロケット（５Ｃ）と前端のドライブスプロケツ
） （５ｄ）との間に該各上板（３ｂ）上のチェーンガ
イド（５ｅ）に沿って張設し、該ドライブスプロケット
（５ｄ）に連結した駆動源たる油圧モータ（５ｆ）の作
動によシ該チェーン（５ｂ）を正逆転して、該チェーン
（５ｂ）に取付けた該フック（５ａ）を該コンベア台（
３）の前端部と後端部との間に往復動自在とし、該コン
ベア台（３）上の複数の荷物Ｗを該フック（５ａ）の前
方への往動による後端の荷物Ｗへの保合で前方に押送す
るようにした。Further, the pushing device R (5) includes a chain (5a) having a hook (5a) as shown in FIG.
5b), and in more detail,
The chain (5b) is attached to the chain guide (5e) on each upper plate (3b) between the drive sprocket (5C) at the rear end of the conveyor table (3) and the drive sprocket (5d) at the front end. The hook (5b) attached to the chain (5b) is stretched along the chain (5b) by operating a hydraulic motor (5f) as a driving source connected to the drive sprocket (5d) to rotate the chain (5b) forward and backward. 5a) on the conveyor table (
3) is reciprocally movable between the front end and the rear end of the hook (5a), and the plurality of loads W on the conveyor table (3) are transferred to the load W at the rear end by the forward movement of the hook (5a). It is now pushed forward when holding.
又、該油圧モータ（５ｆ）は、前記トラクタ（８）に搭
載した油圧源（図示せず）に油圧ホース（９）を介して
配管接続し、コンベア台（３）への油圧源の搭載を不要
としてコンベア台（３）の軽量化とコストダウンとを図
れるようにした。Further, the hydraulic motor (5f) is connected via a hydraulic hose (9) to a hydraulic power source (not shown) mounted on the tractor (8), so that the hydraulic power source can be mounted on the conveyor table (3). By eliminating the need for the conveyor table (3), it is possible to reduce the weight and cost of the conveyor table (3).
更に、図示のものでは該コンベア台（３）の前端部に、
前記ローラコンベア（４１（４）の配置間隙に位置させ
て前方にのびるキャスタ（６）付きの４個の移載ユニツ
）（１■を連結し、該各移載ユニット００は、第６図及
び第７図に示す如く荷物Ｗの底面を脚片Ｗａ間において
受ける支持アーム（１０ａ）を左右各前後１対に備える
ものとし、これら支持アーム（１０ａ）を油圧モータ（
１０ｂ）で駆動される前後者１対のクランク軸（１０ｃ
）により垂直面上で円運動させるようにし、これら支持
アーム（ＸＯａ）上に押出される荷物Ｗを第７図で反時
計方向への円運動により上下動させつつ前方に刻み送シ
して、コンテナ（１）床面に移載し、又時計方向への円
運動によりコンテナ（１）床面に載置される荷物Ｗを後
方に刻み送して該コンベア台（３）に移載し得るように
した。Furthermore, in the illustrated one, at the front end of the conveyor table (3),
The roller conveyor (4 transfer units with casters (6) extending forward and positioned in the arrangement gap of 41 (4)) (1) is connected, and each transfer unit 00 is arranged as shown in Fig. 6 and As shown in FIG. 7, a pair of support arms (10a) for receiving the bottom surface of the cargo W between the legs Wa are provided on each of the left and right sides, and these support arms (10a) are connected by hydraulic motors (
A pair of front and rear crankshafts (10c) are driven by the front and rear crankshafts (10b).
) in a circular motion on a vertical plane, and the load W pushed onto these support arms (XOa) is moved up and down by a circular motion in the counterclockwise direction as shown in FIG. The cargo W placed on the floor of the container (1) can be transferred to the floor of the container (1), and the cargo W placed on the floor of the container (1) can be moved rearward by circular motion in a clockwise direction and transferred to the conveyor table (3). I did it like that.
尚、該油圧モータ（ｘｏｂ）は前記油圧モータ（５ｆ）
と同様にトラクタ（８）の油圧源に配管接続されるもの
で、この場合コンベア台（３）の後端に核両油圧モータ
（５ｆ） （１０ｂ）への配管マニホルド（図示せず）
を取付けて、これに前記油圧ホース（９）を着脱自在と
し、更にトラクタ（８）側に流量調節弁（図示せず）を
設けて、該両油圧モータ（５ｆ） （１０ｂ）の回転速
度を調節自在とする。Note that the hydraulic motor (xob) is the hydraulic motor (5f)
Similarly, the piping is connected to the hydraulic power source of the tractor (8), and in this case, there is a piping manifold (not shown) at the rear end of the conveyor table (3) to the dual hydraulic motors (5f) (10b).
, the hydraulic hose (9) can be attached to and detached from the hydraulic hose (9), and a flow control valve (not shown) is provided on the tractor (8) side to control the rotational speed of both hydraulic motors (5f) and (10b). It should be adjustable.
又、油圧モータ（５ｆ）への給油路にＩＪ ＩＪ−フ弁
（図示せず）を介設し、移載ユニットａＱ上に荷物Ｗが
あって後続の荷物Ｗを押送できないときは、該油圧モー
タ（５ｆ）の回転が停止されるようにした。In addition, an IJ valve (not shown) is installed in the oil supply path to the hydraulic motor (5f), and when there is a load W on the transfer unit aQ and the subsequent load W cannot be pushed, the oil pressure is increased. The rotation of the motor (5f) was stopped.
（発明の効果）
以上の如く本発明によるときは、コンベア台の移動や方
向転換を自由に行い得られ、コンイア台への荷物の載置
作業の場所や方向が限定されず、その作業能率が向上す
ると共に、コンベア台への荷物の載置作業を他のコンベ
ア台によるコンテナへの荷積み作業に併行して行い、荷
積み作業終了後に直ちに次の荷積み作業を行うことが可
能となり、而も従来の如き定置式の機台を用いるものと
異り荷役場のスペースを広く作業スペースとして活用で
き、荷積み作業全体の大巾な能率アップを図れ、更に固
定設備が不要でコスト的にも有利である効果を有する。(Effects of the Invention) As described above, according to the present invention, the conveyor table can be freely moved and changed direction, and the place and direction of loading cargo on the conveyor table are not limited, and the work efficiency is improved. In addition to this, it is now possible to load cargo onto a conveyor table at the same time as loading containers onto other conveyor tables, and to immediately start the next loading operation after the loading operation is completed. Unlike conventional machines that use stationary machines, the space in the cargo handling area can be used extensively as a work space, greatly increasing the efficiency of the entire loading process, and also reducing costs as no fixed equipment is required. It has an advantageous effect.
第１図は本発明装置の１例の側面図、第２図はその平面
図、第３図はそのコンベア台の拡大平面図、第４図は第
３図のＩＶ−ＩＶ線截断背面図、第５図は第４図のＶ−
Ｖ線拡大截断側面図、第６図はコンベア台の前端の移載
ユニットの拡大平面図、第７図はその側面図である。FIG. 1 is a side view of an example of the apparatus of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is an enlarged plan view of the conveyor table, and FIG. 4 is a rear view taken along the line IV-IV in FIG. 3. Figure 5 is V- of Figure 4.
FIG. 6 is an enlarged plan view of the transfer unit at the front end of the conveyor table, and FIG. 7 is a side view thereof.
Claims (1)
アを取付けたコンベア台をコンテナ内に進退させて荷物
の積込みを行うようにしたものにおいて、該コンベア台
に、該ローラコンベア上の荷物を前方に押送する押送装
置を設けると共に、該コンベア台の下面にキャスタを取
付けて、該コンベア台をトラクタその他の車両により任
意の方向に移動自在としたととを特徴とする荷物積込み
装置。 ２、該コンベア台の上面に荷物の底面の脚片に対応する
複数の凹部を凹設し、各凹部に該各脚片を支持するよう
に該ローラコンベアを取付け、該コンベア台のこれら凹
部間の上板下面に該キャスタを取付けたことを特徴とす
る特許請求の範囲第１項記載の荷物積込み装置。 ３、該押送装置は、該上板上に張設した荷物に係合する
フックを有するチェーンで構成され、該チェーンの正逆
転により該フックを該コンベア台の後端部と前端部との
間に往復動自在としたことを特徴とする特許請求の範囲
第２項記載の荷物積込み装置。 ４、該チェーンの駆動源を油圧モータで構成し、該油圧
モータを該コンベア台を移動する車両に搭載した油圧源
に配管接続したことを特徴とする特許請求の範囲第３項
記載の荷物積込み装置。[Scope of Claims] 1. In a container in which a conveyor table equipped with a roller conveyor that supports a plurality of parcels so as to be movable back and forth is moved back and forth into a container to load the parcels, The present invention is characterized in that it is provided with a pushing device that pushes the cargo on the roller conveyor forward, and that casters are attached to the underside of the conveyor stand so that the conveyor stand can be moved in any direction by a tractor or other vehicle. Luggage loading equipment. 2. A plurality of recesses corresponding to the legs on the bottom of the baggage are provided on the top surface of the conveyor table, and the roller conveyor is installed in each recess so as to support each leg, and the roller conveyor is installed in each recess so as to support the legs, and the roller conveyor is installed between these recesses of the conveyor table. 2. A luggage loading device according to claim 1, wherein the caster is attached to the lower surface of the upper plate. 3. The pushing device is composed of a chain having a hook that engages with the cargo stretched on the top plate, and the hook is moved between the rear end and the front end of the conveyor table by forward and reverse rotation of the chain. 3. The cargo loading device according to claim 2, wherein the cargo loading device is capable of reciprocating. 4. Loading cargo according to claim 3, characterized in that the drive source for the chain is constituted by a hydraulic motor, and the hydraulic motor is connected via piping to a hydraulic power source mounted on a vehicle that moves the conveyor table. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11475886A JPS62275930A (en) | 1986-05-21 | 1986-05-21 | Loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11475886A JPS62275930A (en) | 1986-05-21 | 1986-05-21 | Loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62275930A true JPS62275930A (en) | 1987-11-30 |
Family
ID=14645944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11475886A Pending JPS62275930A (en) | 1986-05-21 | 1986-05-21 | Loading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62275930A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5009560A (en) * | 1988-12-06 | 1991-04-23 | Yellow Freight System, Inc. | Mixed freight handling system |
| US5067867A (en) * | 1988-12-06 | 1991-11-26 | Yellow Freight System, Inc. | Conveyor for mixed freight handling system |
| US5082415A (en) * | 1988-08-04 | 1992-01-21 | Takeshi Hayashi | Fork lift style loading apparatus |
| US5088873A (en) * | 1988-12-06 | 1992-02-18 | Yellow Freight System, Inc. | Manipulator mixed freight handling system |
| US5174708A (en) * | 1988-12-06 | 1992-12-29 | Yellow Freight System, Inc. | Boom mounted multiple stage freight lift apparatus |
| US5176485A (en) * | 1988-12-06 | 1993-01-05 | Yellow Freight System, Inc. | Freight manipulator with articulated cantilever boom |
| US5374151A (en) * | 1990-07-14 | 1994-12-20 | Matthews; Robin | Transport loading system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4814304U (en) * | 1971-07-01 | 1973-02-17 |
-
1986
- 1986-05-21 JP JP11475886A patent/JPS62275930A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4814304U (en) * | 1971-07-01 | 1973-02-17 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5082415A (en) * | 1988-08-04 | 1992-01-21 | Takeshi Hayashi | Fork lift style loading apparatus |
| US5009560A (en) * | 1988-12-06 | 1991-04-23 | Yellow Freight System, Inc. | Mixed freight handling system |
| US5067867A (en) * | 1988-12-06 | 1991-11-26 | Yellow Freight System, Inc. | Conveyor for mixed freight handling system |
| US5088873A (en) * | 1988-12-06 | 1992-02-18 | Yellow Freight System, Inc. | Manipulator mixed freight handling system |
| US5174708A (en) * | 1988-12-06 | 1992-12-29 | Yellow Freight System, Inc. | Boom mounted multiple stage freight lift apparatus |
| US5176485A (en) * | 1988-12-06 | 1993-01-05 | Yellow Freight System, Inc. | Freight manipulator with articulated cantilever boom |
| US5374151A (en) * | 1990-07-14 | 1994-12-20 | Matthews; Robin | Transport loading system |
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