The subject matter of the present disclosure broadly relates to the art of spring devices and, more particularly, to end member assemblies that include an end structure and a compliant support structure. The compliant support structure can include a base compliant element assembled together with a plurality of upper compliant elements that are different from the base compliant element but substantially identical to one another. Gas spring assemblies including such end member assemblies and suspension systems including one or more of such gas spring assemblies are also included.
The subject matter of the present disclosure is capable of broad application and use in connection with a variety of applications and/or environments. For example, the subject matter of the present disclosure could be used in connection with gas spring assemblies of non-wheeled vehicles, support structures, height adjusting systems and actuators associated with industrial machinery, components thereof and/or other such equipment. In some cases, the subject matter of the present disclosure may find particular application and use in conjunction with rail vehicles, and will be described herein with particular reference thereto. However, it is to be appreciated that the subject matter of the present disclosure is amenable to use in other applications and environments, and that the specific uses shown and described herein are merely exemplary. Accordingly, the subject matter of the present disclosure is not intended to be limited to use associated with gas spring assemblies of suspension systems for wheeled (e.g., rail) vehicles.
Suspension systems, such as may be used in connection with motorized vehicles and/or rolling-stock rail vehicles, for example, can include one or more spring elements for accommodating forces and loads associated with the operation and use of the corresponding apparatus (e.g., motorized vehicle, rail vehicle) to which the suspension system is operatively connected. In such applications, it is often considered desirable to utilize spring elements that operate at a lower spring rate, as a reduced spring rate can favorably influence certain performance characteristics of the apparatus. That is, it is well understood in the art that the use of a spring element having a higher spring rate (i.e. a stiffer spring) will transmit a greater magnitude of inputs (e.g., inputs due to variations in the rails of a track) to the sprung mass of the apparatus and that, in some applications, this could undesirably effect the sprung mass, such as, for example, by resulting in a rougher, less-comfortable ride of a vehicle. Whereas, the use of spring elements having lower spring rates (i.e., a softer or more-compliant spring) will transmit a lesser amount of the inputs to the sprung mass but can also, undesirably, permit increased deflection under load.
In some cases, the spring devices can take the form of gas spring assemblies that utilize pressurized gas as the working medium. Gas spring assemblies of various types, kinds and constructions are well known and commonly used. Typical gas spring assemblies can include a flexible wall that is secured between comparatively rigid end members and/or end member assemblies.
Generally, vehicle performance characteristics, such as ride quality and comfort, are commonly identified as being related to factors, such as spring rate, that are acting in an approximately axial direction in relation to the gas spring assemblies. It has been recognized that deflection in the lateral direction (i.e., a direction transverse to the longitudinal axis of the gas spring assemblies) of the gas spring assemblies can also influence such vehicle performance characteristics. Furthermore, the design and construction of gas spring assemblies to provide certain performance characteristics in an underinflated and/or uninflated condition of use have also been developed. One challenge of known gas spring assemblies is balancing or otherwise obtaining desired performance characteristics under this combination of and/or other conditions of use.
Notwithstanding the broad usage and overall success of the wide variety of gas spring assemblies that include end member assemblies with compliant support structures that are known in the art, it is believed that a need exists to confront one or more of these competing goals and/or to overcome other disadvantages of known constructions while still retaining comparable or improved performance, ease of manufacture, ease of assembly, ease of installation and/or reduced cost of manufacture. Thus, it is believed to be generally desirable to develop new constructions and/or designs that may advance the art of spring devices.
One example of an end member assembly in accordance with the subject matter of the present disclosure can have a longitudinal axis and can be dimensioned for securement to an associated flexible spring member to at least partially form an associated gas spring assembly. The end member assembly can include a compliant support structure and an end structure that is operatively attached to the compliant support structure. The compliant support structure can include a compliant mount assembly and a base member that is operatively connected to the compliant mount assembly. The base member can include a first surface dimensioned for abutting engagement with an associated structure component and a second surface facing opposite the first surface. The second surface can be approximately planar and can extend transverse to the longitudinal axis. The compliant mount assembly can include one or more rigid elements and one or more compliant elements that are permanently attached to one another such that a substantially fluid-tight connection is formed therebetween. One of the one or more compliant elements can be disposed in abutting engagement with the second surface of the base member and permanently attached thereto such that a substantially fluid-tight connection is formed between the base member and the one of the one or more compliant elements. The end structure can be supported on the compliant support structure in longitudinally-spaced relation to the base member. The end structure can include an end structure wall extending transverse to the longitudinal axis and dimensioned for securement to an associated flexible spring member.
Another example of end member assembly in accordance with the subject matter of the present disclosure can have a longitudinal axis and can be dimensioned for use in forming an associated gas spring assembly. The end member assembly can include a compliant support structure that can include a base member with a first surface dimensioned for abutting engagement with an associated structure component and a second surface facing opposite the first surface. The second surface can be approximately planar and can extend transverse to the longitudinal axis. A compliant mount assembly can be permanently attached to the base member. The compliant mount assembly can include at least two rigid elements, a base compliant element and at least two upper compliant elements. The base compliant element can be permanently attached to the base member. A first one of the at least two rigid elements can be disposed along and permanently attached to the base compliant element opposite the base member. A first one of the at least two upper compliant elements can be disposed along and permanently attached to the first one of the at least two rigid elements opposite the base compliant element. A second one of the at least two rigid elements can be disposed along and permanently attached to the first one of the at least two upper compliant elements opposite the first one of the at least two rigid elements. A second one of the at least two upper compliant elements disposed along and permanently attached to the second one of the at least two rigid elements opposite the first one of the at least two upper compliant elements. The at least two rigid elements, the base compliant element and the at least two upper compliant elements can at least partially form a substantially fluid-tight chamber with the base member. The base compliant member can have a base member spring rate and the at least two upper compliant elements be substantially identical and have a upper member spring rate that is different than the base member spring rate. An end structure can be supported on the compliant support structure in longitudinally-spaced relation to the base member. The end structure can include an end structure wall extending transverse to the longitudinal axis and dimensioned for securement to an associated flexible spring member.
One example of a gas spring assembly in accordance with the subject matter of the present disclosure can include a flexible spring member having a longitudinal axis. The flexible spring member can include a flexible wall that can extend peripherally about the longitudinal axis and longitudinally between opposing first and second ends to at least partially define a spring chamber. An end member can be secured across the first end of the flexible spring member such that a substantially fluid-tight seal is formed therebetween. An end member assembly according to either of the two foregoing paragraphs can be secured across the second end of the flexible spring member such that a substantially fluid-tight seal is formed therebetween.
One example of a suspension system in accordance with the subject matter of the present disclosure can include a pressurized gas system including a pressurized gas source and a control device in fluid communication with the pressurized gas source. At least one gas spring assembly in accordance with the foregoing paragraph can be disposed in fluid communication with the pressurized gas source with the control device disposed in fluid communication therebetween.
Turning now to the drawings, it is to be understood that the showings are for purposes of illustrating examples of the subject matter of the present disclosure and are not intended to be limiting. Additionally, it will be appreciated that the drawings are not to scale and that portions of certain features and/or elements may be exaggerated for purposes of clarity and/or ease of understanding.
Rail vehicle 100 includes a vehicle body 102 supported on one or more frame and wheel assemblies 104, two of which are shown in
Bogies 104 are shown in
Rail vehicles, such as rail vehicle 100, for example, typically include a braking system with one or more brakes operatively associated with each wheel set. In the exemplary arrangement in
Additionally, rail vehicles, such as rail vehicle 100, for example, typically include at least one pneumatic system that is operatively associated therewith. In many cases, components of the one or more pneumatic systems can be distributed along the length of a train that is formed from a plurality of rail vehicles, such as one or more traction-drive engines and one or more rolling stock vehicles, for example. In such cases, each individual rail vehicle will include one or more portions of the pneumatic system. Usually, these one or more portions are serially connected together to form an overall pneumatic system of a train.
Typical pneumatic systems include two or more separately controllable portions, such as a pneumatic braking system that is operatively associated with the vehicle brakes (e.g., brakes 122) and a pneumatic supply system that is operatively associated with the other pneumatically-actuated devices of the rail vehicle, such as the secondary suspension system, for example. As such, rail vehicles typically include a dedicated conduit for each of these two systems. Such conduits normally extend lengthwise along the vehicle body and are often individually referred to as a brake pipe and a supply pipe.
Generally, certain components of the braking system, such as brakes 122, for example, as well as certain components of the pneumatic supply system are supported on or otherwise operatively associated with one of bogies 104 of rail vehicle 100. For example, supply lines 142 can fluidically interconnect bogies 104 with the pneumatic supply system. Supply lines 142 are shown as being fluidically connected with one or more leveling valves 144 that are operatively connected with gas spring assemblies 120, such as by way of gas lines 146, and are selectively operable to transfer pressurized gas into and out of the gas spring assemblies. In some cases, a pressurized gas storage device or reservoir 148 can, optionally, be fluidically connected along gas line 146 between leveling valve 144 and gas spring assembly 120. Additionally, a cross-flow line 150 can, optionally, be connected in fluid communication between two or more of gas lines 146. In some cases, a control valve 152, such as a duplex check valve, for example, can be fluidically connected along cross-flow line 150, such as is shown in
One example of a gas spring assembly in accordance with the subject matter of the present disclosure, such as may be suitable for use as one or more of gas spring assemblies 120 in
Gas spring assembly 200 can be disposed between associated sprung and unsprung masses of an associated vehicle in any suitable manner. For example, one end member can be operatively connected to an associated sprung mass with the other end member disposed toward and operatively connected to an associated unsprung mass. In the arrangement shown in
In the exemplary arrangement in
As mentioned above, one or more securement devices can be used to secure or otherwise interconnect the end members of the gas spring assembly with corresponding structural components. For example, one or more threaded fasteners and/or other features could operatively secure the end member to the associated structural component. Additionally, or in the alternative, projection 224 can include an outer surface 226 that is dimensioned for receipt within a passage or mounting hole MHL that extends into or through structural component SC1. Additionally, one or more sealing elements 228 can, optionally, be included that are disposed between or otherwise at least partially form a substantially fluid-tight connection between the end member and the structural component, such as between projection 224 and the inside surface (not numbered) of structural component SC1 through which mounting hole MHL extends, for example. In some cases, structural component SC1 can, optionally, at least partially define an external reservoir suitable for storing a quantity of pressurized gas.
End member assembly 204 is shown in
It will be appreciated that compliant support structure 232 can include any suitable construction, configuration and/or arrangement of features and components, and that end structure 230 can be supported on or along compliant support structure 232 in any suitable manner. For example, compliant support structure 232 is shown in
Additionally, or in the alternative, the one or more securement features can include a projection or post 264 extending axially outward from outer surface 262. Post 264 can be dimensioned for receipt within a passage or mounting hole MHL that extends into or through structural component SC2. In some cases, the one or more securement features can also include a projection or post 266 that extends axially outward from outer surface 262 in offset relation to post 264 such that at least a portion of posts 264 and 266 are co-extensive. If provided, post 266 can also be dimensioned for receipt within a passage or mounting hole MHL extending into or through structural component SC2. In such an arrangement, the offset position of post 266 relative to post 264 and axis AX can substantially inhibit rotation of end member assembly 204 (and gas spring assembly 200) about axis AX. It will be appreciated, however, that other arrangements could alternately be used. As one example, one or more threaded fasteners and corresponding threaded features could be used to operatively secure end member assembly 204 on or along the associated structural component.
End structure 230 can be supported on base member 256 by a compliant mount assembly 268 that together with base member 256 at least partially forms compliant support structure 232. In some cases, compliant support structure 232 can include a mounting member 270 supported on compliant mount assembly 268 in spaced relation to base member 256. In such case, compliant mount assembly 268 can extend between and operatively connect the mounting and base members such that a non-zero distance or height is formed therebetween, such as is represented in
It will be appreciated that end structure 230 can be supported on or along compliant support structure 232, such as on or along mounting member 270, for example, in any suitable manner. Additionally, it will be appreciated that, if provided, mounting member 270 can abuttingly engage or otherwise operatively support end structure 230 in any suitable manner. As one example, the end structure can be secured on or along the compliant support structure by way of a flowed-material joint (not shown). As another example, one or more securement features and/or devices can be provided on or along the mounting member in a manner suitable for operatively attaching the end structure and the compliant support structure to one another. In the arrangement shown in
In some cases, end structure 230 and mounting member 270 can be operatively connected with one another such that a substantially fluid-tight interface is formed therebetween. It will be appreciated that such a substantially fluid-tight interface can be formed in any suitable manner. As one example, a flowed-material joint could be included, such as between surface 238 of end structure 230 and surface 274 of mounting member 270, such as is represented in
A compliant support structure in accordance with the subject matter of the present disclosure can provide improved (i.e., reduced) spring rates in both the lateral and vertical directions in comparison with conventional, known constructions. In particular, in a preferred embodiment, a compliant support structure in accordance with the subject matter of the present disclosure can include a compliant mount assembly with a base compliant element assembled together with a plurality of upper compliant elements that are substantially identical to one another. In such a construction, the base compliant element has a base element configuration and a base element spring (in at least one of the lateral and vertical directions), and the plurality of upper compliant elements have an upper element configuration and an upper element spring rate (in at least one of the lateral and vertical directions) that differ in comparison with the corresponding configuration and spring rate of the base compliant element. It will be appreciated that any suitable construction, configuration and/or arrangement of components in accordance with the subject matter of the present disclosure could be used. Thus, it is to be recognized and appreciated that the embodiments shown and described herein are merely exemplary and not intended to be limiting.
Additionally, a compliant mount assembly in accordance with the subject matter of the present disclosure will include at least two rigid elements and at least three comparatively compliant elements that are stacked, sandwiched or otherwise disposed in serial relation to one another. In a preferred arrangement, the two or more rigid elements can be formed from metal material (e.g., steel and/or aluminum), rigid thermoplastic material (e.g., polyamide) or any combination thereof. Additionally, in a preferred arrangement, the three or more compliant elements can be formed from an elastomeric material (e.g., natural rubber, synthetic rubber and/or thermoplastic elastomer). Additionally, in a preferred construction, the two or more rigid elements and the three or more compliant elements are permanently attached to one another (i.e., inseparable without damage, destruction or material alteration of at least one of the component parts).
In the exemplary arrangement shown in
Rigid elements 290 are identified as having opposing surfaces 298 and 300. In the configuration shown, rigid elements 290 are formed from thin-walled material and have a frustoconical shape with a hollow interior. Compliant elements 292 can be attached to surfaces 298 and 300 of adjacent ones of rigid elements 290. If provided, compliant element 294 can be attached between surfaces 276 of mounting member 270 and surface 298 of an adjacent one of rigid elements 290. Compliant element 296 can be attached between inner surface 260 of base member 256 and surface 300 of an adjacent one of rigid elements 290. As indicated above, in a preferred construction, the one or more rigid elements and the one or more compliant elements are permanently attached to one another (i.e., inseparable without damage, destruction or material alteration of at least one of the component parts).
As discussed above, it will be appreciated that the rigid and compliant elements as well as the base member and the mounting member, if provided, can be attached to one another in any suitable manner. In a preferred arrangement, permanent and substantially fluid-tight joints or connections are formed between compliant elements 292, 294 and 296 and respective ones of adjacent rigid elements 290, base member 256 and mounting member 270. In some cases, such substantially fluid-tight joints or connections can be formed by way of one or more processes and/or can include the use of one or more treatments and/or materials. Exemplary processes can include molding, adhering, curing and/or vulcanizing. In this manner, an end member chamber 302 can be formed within end member 204 that is substantially fluid-tight and can retain a quantity of pressurized gas at a desired pressure for an extended period of time, such as a period of hours, days, weeks or months, for example. In a preferred arrangement, passage 246 that extends through end structure wall 234 is also disposed in fluid communication with end member chamber 302. In such case, pressurized gas can be transferred into, out of and/or between end member chamber 302 and spring chamber 208 through passage 246 in the end structure. In some cases, passage 246 may be of sufficient size such that chambers 208 and 302 function as a single volume of pressurized gas.
In a preferred construction of a compliant mount assembly in accordance with the subject matter of the present disclosure, such as compliant mount assembly 268, for example, the configuration and/or construction of the base compliant element will differ from configuration and/or construction of the upper and/or intermediate compliant elements. Additionally, in a preferred construction, the axial and lateral spring rates of the base compliant element of a compliant mount assembly in accordance with the subject matter of the present disclosure will differ from the axial and lateral spring rates of the corresponding upper and/or intermediate compliant elements. In some cases, the axial and lateral spring rates of the base compliant element can differ by at least ten (10) percent from the corresponding axial and lateral spring rates of the upper and/or intermediate compliant elements.
In such cases, it will be appreciated that the overall axial (or vertical) spring rate of the compliant mount assembly can be characterized by:
where, the variable “n” refers to the number of upper and/or intermediate compliant elements included in the compliant mount assembly, the variable “kA1” refers to the axial (or vertical) spring rate of the upper and/or intermediate compliant elements, the variable “kA2” refers to the axial (or vertical) spring rate of the base compliant element, and the variable “kAT” refers to the overall or total axial (or vertical) spring rate of the compliant mount assembly.
Additionally, it will be appreciated that the overall lateral (or horizontal) spring rate of the compliant mount assembly can be characterized by:
where, the variable “n” refers to the number of upper and/or intermediate compliant elements included in the compliant mount assembly, the variable “kL1” refers to the lateral (or horizontal) spring rate of the upper and/or intermediate compliant elements, the variable “kL2” refers to the lateral (or horizontal) spring rate of the base compliant element, and the variable “kLT” refers to the overall or total lateral (or horizontal) spring rate of the compliant mount assembly.
Flexible spring member 206 can be of any suitable size, shape, construction and/or configuration. As one example, flexible spring member 206 can include a flexible wall 304 that is at least partially formed from one or more layers or plies (not identified) of elastomeric material (e.g., natural rubber, synthetic rubber and/or thermoplastic elastomer) and can optionally include one or more plies or layers of filament reinforcing material (not shown). Flexible wall 304 is shown extending in a longitudinal direction between opposing ends 306 and 308. In some cases, flexible wall 304 can, optionally, include a mounting bead dispose along either one or both of ends 306 and 308. In the arrangement shown in
It will be appreciated, that the ends of flexible spring member 206 can be secured on, along or otherwise interconnected between end members 202 and 204 in any suitable manner. As one example, gas spring assembly 200 can include one or more bead retaining elements that engage at least a portion of the flexible spring member and maintain the flexible spring member in substantially fluid-tight engagement with the corresponding end member assembly (e.g., end member assembly 202 and/or 204). In the arrangement shown in
Typically, at least a portion of flexible spring member 206 will extend radially outward beyond outer periphery 240 of end structure 230. In some cases, such as is shown in
As is well known in the art, it is generally desirable to avoid or at least minimize contact between end members of a gas spring assembly, such as may occur due to variations in load conditions and/or upon deflation of the gas spring assembly, for example. Additionally, or in the alternative, it may be desirable to support a sprung mass (e.g., vehicle body 102) at a predetermined height or distance (or within a predetermined range of heights or distances) relative to the unsprung mass (e.g., bogies 104) during uninflated, underinflated or other such condition of the gas spring assembly. As such, gas spring assembly 200 is shown in
It will be appreciated that jounce bumper 326 can be secured on or along an end member in any suitable manner. As identified in
Gas spring assembly 200 can also, optionally, include a complimentary component that may be dimensioned to or otherwise suitable for abuttingly engaging the jounce bumper or a component thereof (e.g., wear plate 332). In the arrangement shown in
As discussed above, it will be appreciated, that the ends of flexible spring member 206 can be secured on, along or otherwise interconnected between end members 202 and 204 in any suitable manner. As mentioned above, for example, gas spring assembly 200 can include one or more bead retaining elements that engage at least a portion of the flexible spring member and maintain the flexible spring member in substantially fluid-tight engagement with the corresponding end member assembly (e.g., end member assembly 202 and/or 204). In some cases, a bead retaining element, such as bead retaining element 316, for example, could be used. Alternately, one or more bead retaining features can be formed on or along another component of the gas spring assembly. For example, in the arrangement shown in
As identified in
Additionally, it will be appreciated that lateral support element 344 can be secured on or along end member 202 in any suitable manner. As one example, lateral support element 340 can include a plurality of holes or openings 354 extending therethrough that are disposed in spaced relation to one another about element wall 346, such as in peripherally-spaced relation to one another along mounting portion 348 thereof, for example. In such case, plate wall 210 of end member 202 can include a corresponding plurality of holes or openings 356 that, together with holes 354, are dimensioned to receive one of a plurality of securement devices 358, such as threaded fastener and threaded nut assemblies, for example. In this manner, lateral support element 344 can be secured on end member 202, and flexible spring member 206 can be operatively secured to the end member such that a substantially fluid-tight seal can be formed therebetween.
With further reference to
As identified in
With further reference to the performance of a gas spring assembly in accordance with the subject matter of the present disclosure (e.g., gas spring assemblies 120 and/or 200), it will be appreciated that an end member assembly in accordance with the subject matter of the present disclosure, such as end member 204, for example, can contribute to the overall performance characteristics of such a gas spring assembly. Additionally, it will be recognized and appreciated that the contribution to the overall performance characteristics made by the end member assembly will be a function, at least in part, of the performance characteristics of the rigid and compliant elements from which the end member assembly is formed. That is, it will be recognized that the individual performance characteristics of the plurality of rigid and compliant elements of the end member will combine to at least partially establish the overall performance characteristics of the end member assembly, such as overall axial and lateral spring rates and corresponding axial and lateral deflections, for example. Thus, it will be appreciated that rigid and compliant elements having any combination of performance characteristics can be used.
As examples, in some cases, the rigid elements can be substantially identical to one another. In other cases, rigid elements having two or more different configurations and/or performance characteristics could be used. As additional examples, or alternate examples, the compliant elements can, in in some cases, be substantially identical to one another. In other cases, compliant elements having two or more different configurations, constructions and/or performance characteristics could be used. As such, it will be recognized and appreciated that different constructions, configurations and/or arrangements of rigid and compliant elements can be used to provide desired performance characteristics of the end member assembly (e.g., end member assembly 204) and corresponding gas spring assembly (e.g., gas spring assemblies 120 and/or 200).
For example, gas spring assembly 200 is shown in
Gas spring assembly 200 is shown in
As used herein with reference to certain features, elements, components and/or structures, numerical ordinals (e.g., first, second, third, fourth, etc.) may be used to denote different singles of a plurality or otherwise identify certain features, elements, components and/or structures, and do not imply any order or sequence unless specifically defined by the claim language. Additionally, the terms “transverse,” and the like, are to be broadly interpreted. As such, the terms “transverse,” and the like, can include a wide range of relative angular orientations that include, but are not limited to, an approximately perpendicular angular orientation. Also, the terms “circumferential,” “circumferentially,” and the like, are to be broadly interpreted and can include, but are not limited to circular shapes and/or configurations. In this regard, the terms “circumferential,” “circumferentially,” and the like, can be synonymous with terms such as “peripheral,” “peripherally,” and the like.
Furthermore, the phrase “flowed-material joint” and the like, if used herein, are to be interpreted to include any joint or connection in which a liquid or otherwise flowable material (e.g., a melted metal or combination of melted metals) is deposited or otherwise presented between adjacent component parts and operative to form a fixed and substantially fluid-tight connection therebetween. Examples of processes that can be used to form such a flowed-material joint include, without limitation, welding processes, brazing processes and soldering processes. In such cases, one or more metal materials and/or alloys can be used to form such a flowed-material joint, in addition to any material from the component parts themselves. Another example of a process that can be used to form a flowed-material joint includes applying, depositing or otherwise presenting an adhesive between adjacent component parts that is operative to form a fixed and substantially fluid-tight connection therebetween. In such case, it will be appreciated that any suitable adhesive material or combination of materials can be used, such as one-part and/or two-part epoxies, for example.
Further still, the term “gas” is used herein to broadly refer to any gaseous or vaporous fluid. Most commonly, air is used as the working medium of gas spring devices, such as those described herein, as well as suspension systems and other components thereof. However, it will be understood that any suitable gaseous fluid could alternately be used.
It will be recognized that numerous different features and/or components are presented in the embodiments shown and described herein, and that no one embodiment may be specifically shown and described as including all such features and components. As such, it is to be understood that the subject matter of the present disclosure is intended to encompass any and all combinations of the different features and components that are shown and described herein, and, without limitation, that any suitable arrangement of features and components, in any combination, can be used. Thus it is to be distinctly understood claims directed to any such combination of features and/or components, whether or not specifically embodied herein, are intended to find support in the present disclosure.
Thus, while the subject matter of the present disclosure has been described with reference to the foregoing embodiments and considerable emphasis has been placed herein on the structures and structural interrelationships between the component parts of the embodiments disclosed, it will be appreciated that other embodiments can be made and that many changes can be made in the embodiments illustrated and described without departing from the principles hereof. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description. Accordingly, it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the subject matter of the present disclosure and not as a limitation. As such, it is intended that the subject matter of the present disclosure be construed as including all such modifications and alterations.
Filing Document | Filing Date | Country | Kind |
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PCT/US2016/018542 | 2/18/2016 | WO | 00 |
Number | Date | Country | |
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62117517 | Feb 2015 | US |