1. A high torque output drive system comprising:
a fluid tank including
an upper region,
a lower region which is disposed opposite to said upper region in an upright direction, and which serves as a reservoir for storing a fluid, and
a sub-chamber interposed between said upper and lower regions, and including left and right columnar regions which are opposite to, and are in non-communication with each other in a first transverse direction relative to the upright direction, and which are configured to be in fluid communication with said reservoir respectively, said left and right columnar regions being configured to define left and right running routes, respectively;
a looped chain unit including an array of weighted members disposed one after another in series in a lengthwise direction, said array of weighted members having leading and trailing subarrays that are displaced from each other in the lengthwise direction;
upper and lower direction reversing guide units disposed respectively in said upper and lower regions, and respectively defining upper and lower guide routes each of which interconnects said left and right running routes, and each of which has entry and exit ends, said upper and lower direction reversing guide units being configured such that, once said looped chain unit is carried forward by said upper and lower direction reversing guide units to move along said upper and lower guide routes, said leading and trailing subarrays are respectively placed along said left and right running routes;
a fluid pump operable to move the fluid in said reservoir towards said right columnar region such that a fluid level in said right columnar region is higher than that in said left columnar region and such that a buoyant force is generated in said right columnar region as a result of a difference in fluid level between said left and right columnar regions to lessen weight of said trailing subarray disposed along said right running route so as to render said leading subarray heavier than said trailing subarray, thereby inducing synchronized downward and upward movements of said leading and trailing subarrays;
a force-output shaft rotatably mounted on said fluid tank about a revolving axis oriented in a second direction transverse to both the first transverse direction and the upright direction; and
a gear train unit configured to couple one of said leading and trailing subarrays to said force-output shaft such that a translational force of one of the downward movement of said leading subarray and the upward movement of said trailing subarray is taken up at a corresponding one of said right and left running routes to drive said force-output shaft to revolve about the revolving axis.
2. The high torque output drive system according to claim 1, wherein said gear train unit includes an upright shaft which is revolvable about an upright axis transverse to the revolving axis of said force-output shaft, which extends along the upright axis to terminate at upper and lower ends that are disposed in said upper and lower regions, respectively, and which is coupled to said force-output shaft such that said force-output shaft is driven to revolve about the revolving axis when said upright shaft is revolved about the upright axis.
3. The high torque output drive system according to claim 2, wherein each of said upper and lower direction reversing guide units includes a driving shaft which is revolvable relative to said fluid tank about a driving axis in the second transverse direction, and which is coupled to and revolved with a respective one of said upper and lower ends of said upright shaft, and a plurality of radial arms which are angularly displaced from one another and which extend radially from said driving shaft to terminate at carrier ends, respectively, such that, when said driving shaft is revolved about the driving axis, said carrier ends are moved to sequentially engage said looped chain unit at said entry end so as to carry said looped chain unit therewith and to keep carrying said looped chain unit until said carrier ends pass through said exit end, thereby guiding said looped chain unit to move along a respective one of said upper and lower guide routes.
4. The high torque output drive system according to claim 3, wherein each of said upper and lower direction reversing guide units further includes two confining walls which are spaced apart from each other in the second transverse direction to confine a respective one of said upper and lower guide routes, and which extend in a circumferential direction about the driving axis to terminate at two openings that face upwardly and that respectively correspond to said exit and entry ends, each of said upper and lower guide routes being configured to flare outward at said openings to facilitate passage of said carrier ends of said radial arms of a respective one of said upper and lower direction reversing guide units therethrough.
5. The high torque output drive system according to claim 4, wherein each of said weighted members has a plurality of recesses, each of said carrier ends having a pair of flexible jaw bodies configured to be forced by said confining walls to abut against a corresponding one of said weighted members in the second transverse direction, and a plurality of protrusions configured to respectively and matingly engage said recesses in the corresponding one of said weighted members once said flexible jaw bodies are brought to move through said entry end and are forced by said confining walls to abut against the corresponding one of said weighted members, thereby ensuring firm engagement between each of said radial arms and the corresponding one of said weighted members when said looped chain unit is guided along the respective one of said upper and lower guide routes.
6. The high torque output drive system according to claim 2, wherein said gear train unit further includes
two pairs of rotary shafts disposed in said sub-chamber, said rotary shafts of each pair being revolvable with the downward and upward movements of said leading and trailing subarrays about respective rotary axes in the second transverse direction,
two synchronizing shafts, each disposed to synchronize revolution of said rotary shafts of each pair, and
two transmitting shafts, each disposed to transmit a rotational force of synchronized revolution of said rotary shafts to drive said upright shaft to revolve about the upright axis.
7. The high torque output drive system according to claim 6, wherein each of said rotary shafts is provided with a pinion portion, each of said weighted members having two rack portions which are disposed to mesh with said pinion portions of said rotary shafts of each pair so as to rotate said rotary shafts with the downward and upward movements of said weighted members.
8. The high torque output drive system according to claim 1, wherein said fluid tank has left and right rail units which are respectively disposed in said left and right columnar regions, and which extend in the upright direction to respectively define said left and right running routes, each of said left and right rail units having a plurality of antifriction rollers rollably mounted thereon so as to facilitate movement of a respective one of said leading and trailing subarrays.
9. The high torque output drive system according to claim 1, wherein said fluid tank has top and bottom tank walls disposed opposite to each other in the upright direction, and a surrounding wall interposed between said top and bottom tank walls, said surrounding wall having a plurality of transparent windows to permit viewing of an interior of said fluid tank.
10. The high torque output drive system according to claim 1, wherein each of said weighted members is a metal block with a rectangular cross-section.
11. The high torque output drive system according to claim 7, further comprising:
a left auxiliary guiding and driving unit disposed between said entry end of said lower guide route and said rotary shafts of one pair, and which includes left journalled and driven shafts that respectively have gear portions configured to mesh with said rack portions of each of said weighted members, said left journalled shaft being coupled to said rotary shafts so as to revolve in synchronization with said rotary shafts; and
a right auxiliary guiding and driving unit disposed between said rotary shafts of the other one pair and said exit end of said lower guide route, and which includes first and second rotating shafts that respectively have gear portions configured to mesh with said rack portions of each of said weighted members, and an auxiliary transmitting shaft disposed to couple said first rotating shaft to said upright shaft to transmit a rotational force of said upright shaft to said first rotating shaft such that said first rotating shaft revolves in synchronization with said upright shaft.
12. The high torque output drive system according to claim 11, wherein said right auxiliary guiding and driving unit further includes right journalled and driven shafts which respectively have gear portions configured to mesh with said rack portions of each of said weighted members, two chain wheels which are mounted respectively on said first rotating shaft and said right journalled shaft, and a chain which is trained on said chain wheels so as to synchronize revolution of said first rotating shaft and said right journalled shaft.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-33. (canceled)
34. A process of preventing an object to penetrate a person or structure which comprises covering said person or said structure with a material so that at least part of said person or at least part of said structure is covered with said material and subjecting said material to an object to so that
said person or said structure is moving,
said object is moving or
both said object and said person or said structure is moving
so that the object partially penetrates said material and wherein said material comprises a fabric or a yarn which further comprises a shear thickening fluid (STF) intercalated into said fabric andor yarn wherein said STF remains in a fluid form and said STF comprises particles suspended in a solvent and said particle-solvent suspension remains in a flowable form after intercalation and said solvent is environmentally stable and remains integral to said material and said suspended particles during service.
35. The process as claimed in claim 34, wherein said moving object is a flying metal or a piercing object.
36. The process as claimed in claim 35, wherein said moving object is a knife, sword or spike.
37. The process as claimed in claim 36, wherein said moving object is a flying metal.
38. The process as claimed in claim 34, wherein said material is a ballistic material which contains aramid fibers, graphite fibers, nylon fibers or glass fibers.
39. The process as claimed in claim 34, wherein said particles are oxides, calcium carbonate, synthetically occurring minerals, naturally occurring minerals, polymers or a mixture thereof.
40. The process as claimed in claim 34, wherein said solvent is water, which optionally contains added salts, surfactants, andor polymers and said material is a poly (para-phenylene terephthalamide).
41. The process as claimed in claim 34, wherein said solvent is ethylene glycol, polyethylene glycol, ethanol, silicon oils, phenyltrimethicone or a mixture thereof and said material is a poly (para-phenylene terephthalamide).
42. The process as claimed in claim 34, wherein said particles are SiO2, polystyrene or polymethylmethacrylate.
43. The process as claimed in claim 34, wherein said particles have an average diameter size of less than 1 mm.
44. The process as claimed in claim 34, wherein said particles have an average diameter size of less than 100 microns.
45. The process as claimed in claim 34, wherein the material comprises one or more layers of said material and said at one or more layers are a woven fabric.
46. The process as claimed in claim 34, wherein the material comprises one or more layers of said material and said at one or more layers are a nonwoven fabric.
47. The process as claimed in claim 34, wherein the material comprises one or more layers of said material and said at one or more layers are a knitted fabric.
48. The process as claimed in claim 34, wherein the fabric or yarn is nylon.
49. The process as claimed in claim 34, wherein said fabric or yarn is a polymeric fiber or yarn.
50. The process as claimed in claim 34, wherein said particles are SiO2, polystyrene or polymethylmethacrylate and said solvent is water, which optionally contains added salts, surfactants, andor polymers and said material is a poly (para-phenylene terephthalamide).
51. The process as claimed in claim 50, wherein said particles have an average diameter size of less than 100 microns.