公开(公告)号：US6065719A

公开(公告)日：2000-05-23

申请号：US310395

申请日：1999-05-12

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C25/34 ,  B64C25/36

CPC分类号： B64C25/34 ,  B64C2025/345

摘要： A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized. A main landing gear having single wheel or king pin steering. Pivot pin tilting is utilized in truck type main landing gear, e.g. where a truck axle is adapted for independent steering or where single wheel or king pin steering is utilized.

摘要翻译： 一种主起落架系统，其采用采用Ackermann型转向的方式，其中采用了多个成对的车轮，并且其中每个卡车车轴适于独立转向。 利用电子控制装置和液压方向阀装置。 主起落架具有单轮或主导向导。 枢轴销倾斜用于卡车式主起落架，例如 其中卡车车轴适用于独立转向或使用单轮或国王销转向。

公开(公告)号：US5513821A

公开(公告)日：1996-05-07

申请号：US219329

申请日：1994-03-29

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C25/50 ,  B64C25/42

CPC分类号： B64C25/50 ,  B64C2025/345

摘要： A steering method and system for large aircraft wherein during low speed taxi the main landing gear wheels are steered and the nose gear is free to castor. During high speed taxi such as during take off and landing, the main gear steering is locked out while the nose gear is steered.

摘要翻译： 一种用于大型飞机的转向方法和系统，其中在低速出租车期间，主起落架轮被转向并且起落架是自由的。 在高速出租车，例如起降时，主齿轮转向系统在前档被转向时被锁定。

公开(公告)号：US5110068A

公开(公告)日：1992-05-05

申请号：US631627

申请日：1990-12-20

申请人： Donald L. Grande ,  Harry C. Ralph

发明人： Donald L. Grande ,  Harry C. Ralph

IPC分类号： B64C25/34

CPC分类号： B64C25/34

摘要： A landing gear for an aircraft has a multi-wheeled truck that is swung by a main prop from a stowed position to a lowered position below the aircraft. The truck is pivotably connected to the lower end of the main prop. When the gear is lowered, at least one rear prop extends between the upper end of the main prop and an aft region of the wheel truck. Both the main and rear props are telescoping members. However, the rear prop is releasably lockable to hold a certain fixed length when the aircraft is on the ground, so as to prevent pivoting movement of the wheel truck relative to the main prop. This impedes the ability of the aircraft to tip back when its center of gravity shifts aft during unloading.

公开(公告)号：US4917334A

公开(公告)日：1990-04-17

申请号：US251428

申请日：1988-09-30

申请人： Harry C. Ralph ,  Gerhard E. Seidel

发明人： Harry C. Ralph ,  Gerhard E. Seidel

IPC分类号： B64C25/34 ,  B64C25/60

CPC分类号： B64C25/34

摘要： A multiwheel landing gear assembly includes a forward set of wheels which are in tandem with a middle set of wheels which in turn are in tandem with a rear set of wheels. The forward set of wheels are connected to a main support strut of the landing gear by a levered arrangement. The middle and rear set of wheels are connected together by a truck beam which in turn is connected to the main support strut by a radius rod. When the middle and rear wheels are subject to an upward force such as when the aircraft is landing, the radius rod limits movement of the wheels in a generally upward direction along a path having a radius which is equal to the length of the radius rod. Movement of the middle and rear wheels along the path in the upward direction is resisted by a shock absorber. In this manner, the vertical loads are reacted in a lengthwise direction along the radius rod and shock absorber.

公开(公告)号：US5839692A

公开(公告)日：1998-11-24

申请号：US874689

申请日：1997-06-13

申请人： Harry C. Ralph ,  Ian Robert Bennett

发明人： Harry C. Ralph ,  Ian Robert Bennett

IPC分类号： B64C25/12 ,  B64C25/14

CPC分类号： B64C25/12 ,  B64C25/14

摘要： Landing gear (10) for an airplane including an elongate strut (12) having a first end and a second end longitudinally spaced therefrom. The first end of the strut being pivotally attached to the airplane for pivotal movement of the strut between an extended position for taxiing and landing of the airplane and a retracted position for stowage of the landing gear within a landing gear bay. The landing gear assembly also includes elongate first and second hub assemblies (70) and (72) each having first and second ends. Landing wheels (20) and (22) are journaled to each of the second ends of the hub assemblies. The first ends of the hub assemblies are attached to the second end of the strut for swinging movement thereof between an unsplayed position, wherein the wheels are parallel to each other, and a splayed position, wherein the first and second hub assemblies are spread to a predetermined angle from each other to permit stowage of the landing gear within the landing gear bay with minimal intrusion. The first and second hub assemblies are actuatable between the splayed and unsplayed positions by first and second foldable linkage assemblies (84) and (88) and are reversibly driven by a linear hydraulic actuator (126).

摘要翻译： 用于飞机的起落架（10）包括具有第一端的细长支柱（12）和与其纵向间隔开的第二端。 支柱的第一端被枢转地附接到飞机上，用于在用于滑行和降落飞机的延伸位置之间的支柱的枢转运动和用于在起落架舱内存放起落架的缩回位置。 起落架组件还包括细长的第一和第二轮毂​​组件（70）和（72），每个具有第一和第二端。 着陆轮（20）和（22）被轴颈连接到轮毂组件的每个第二端。 轮毂组件的第一端附接到支柱的第二端，用于在非平衡位置之间的摆动运动，其中车轮彼此平行，并且具有张开位置，其中第一和第二轮毂​​组件扩展到 彼此之间的预定角度，以允许起落架在起落架舱内以最小的入侵载荷。 第一和第二轮毂​​组件可通过第一和第二可折叠连杆组件（84）和（88）在展开位置和未展开位置之间起动，并由线性液压致动器（126）可逆驱动。

公开(公告)号：US6123292A

公开(公告)日：2000-09-26

申请号：US140486

申请日：1998-08-26

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C25/34 ,  B64C25/02

CPC分类号： B64C25/34 ,  B64C2025/345

摘要： A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized.

摘要翻译： 一种主起落架系统，其采用采用Ackermann型转向的方式，其中采用了多个成对的车轮，并且其中每个卡车车轴适于独立转向。 利用电子控制装置和液压方向阀装置。

公开(公告)号：US5947414A

公开(公告)日：1999-09-07

申请号：US715981

申请日：1996-09-19

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C25/34 ,  B64C25/36

CPC分类号： B64C25/34 ,  B64C2025/345

摘要： A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized. A main landing gear having single wheel or king pin steering. Pivot pin tilting is utilized in truck type main landing gear, e.g. where a truck axle is adapted for independent steering or where single wheel or king pin steering is utilized.

公开(公告)号：US5325943A

公开(公告)日：1994-07-05

申请号：US899942

申请日：1992-06-17

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： F16F9/48

CPC分类号： F16F9/48

摘要： A variable orifice damper includes a sealed cylinder, a piston rod mounted for sliding movement along the axis of the cylinder carrying a piston head and a tail rod, the piston rod and tail rod extending from the interior of the cylinder outward beyond a corresponding support surface on the cylinder wall. The cylinder contains a cavity portion whose internal size varies along the cylinder axis located axially between two adjacent cavity portions of larger size than the intermediate cavity portion. The piston head has a surface whose cross sectional area varies along the axis of the cylinder and is adapted to pass through the cavity portion of variable size, the piston head and cavity portion defining a orifice of variable size therebetween. The piston rod has a bore containing a separator piston actuated by fluid passing the orifice and adapted to compress gas held in the bore.

摘要翻译： 可变节流孔阻尼器包括密封圆筒，活塞杆，其安装用于沿着承载活塞头和尾杆的气缸的轴线滑动，活塞杆和尾杆从气缸内部向外延伸超过相应的支撑表面 在气缸壁上。 气缸包含空腔部分，其内部尺寸沿轴向定位在比中间腔部分更大尺寸的两个相邻空腔部分之间的气缸轴线变化。 活塞头的表面的横截面积沿着圆筒的轴线变化并且适于穿过可变尺寸的空腔部分，活塞头和空腔部分在其间限定可变尺寸的孔。 活塞杆具有孔，该孔包含由通过孔的流体致动并适于压缩保持在孔中的气体的分离活塞。

公开(公告)号：US5148896A

公开(公告)日：1992-09-22

申请号：US724121

申请日：1991-07-01

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C25/60 ,  F16F9/06 ,  F16F9/43

CPC分类号： B64C25/60 ,  F16F9/06 ,  F16F9/43

摘要： A high pressure hydropneumatic shock absorber (10) includes a cylinder (12) with a piston (16) slidably positioned within the cylinder (12). The piston (16) and cylinder (12) are configured as a telescopic suspension unit. The piston (16) defines a first variable volume chamber (28) within the cylinder (12) and is filled with a working liquid. A reservoir (44) includes an interior movable barrier wall (62) defining first (60) and second (64) separated variable volume reservoir chambers. The first reservoir chamber (60) is filled with working liquid and the second reservoir chamber (64) is filled with a working gas. A flow-controlling damper valve (58) communicates the first cylinder chamber (28) with the first reservoir chamber (60). Relative telescopic movement of the piston (16) and cylinder (12) cause damped flow of the working liquid from the first cylinder chamber (28) to the first reservoir chamber (60) and cause responsive movement of the barrier wall (62) to allow expansion of the first reservoir chamber (60) and corresponding reduction of the second reservoir chamber (64), thereby compressing the working gas. A method of charging a hydropneumatic shock absorber (10) having a telescopic piston cylinder unit (12, 16) comprises the steps of providing a first variable volume chamber (28) defined by the piston (16) within the cylinder (12). A flow-controlling damper valve (58) communicating the first chamber (28) with a reservoir (44) is also provided. The first chamber (28) and reservoir (44) are filled with a predetermined volume of a working liquid and a predetermined volume of a working gas at a predetermined pressure. Further working fluid is added, thereby compressing the working gas, until the working liquid and working gas reach a predetermined desired static pressure at a predetermine relative position of the piston 16 to the cylinder 12.

公开(公告)号：US06354537B1

公开(公告)日：2002-03-12

申请号：US09644931

申请日：2000-08-23

申请人： Harry C. Ralph

发明人： Harry C. Ralph

IPC分类号： B64C2502

CPC分类号： B64C25/42 ,  B64C25/34 ,  B64C2025/345

摘要： An aircraft landing gear brake arrangement wherein a landing gear stub axle and brake pressure plate are integrated. Each of the integrated assemblies is attached to a support fitting which pivots on the truck axle thereby causing the torque links to be unaffected by steering operations.

摘要翻译： 飞机起落架制动器装置，其中起落架短轴和制动压力板被集成。 每个集成组件连接到在卡车车轴上枢转的支撑配件，从而使转矩连杆不受转向操作的影响。