PERSONAL AUGMENTATION SUIT AND METHOD FOR ASSISTED HUMAN MOVEMENT

Description

Field of the Invention

[0001] The present invention relates in general to a human assistance device, and more particularly, to a personal augmentation suit and method for assisted human motion.Background of the Invention

[0002] A variety of human assistance devices provide aid for human motion. Some work tasks and activities demand frequent and heavy lifting or long-term strenuous movement, beyond normal unassisted physical exertion, and can lead to exhaustion and potential injury. In particular, excessive strain on muscles and joints can cause injury to the back, legs, and knees with associated reduction in productivity. The human assistance device as worn by the user is designed to overcome or compensate for the added load or strain and make many work tasks easier to perform.

[0003] In one embodiment, the human assistance device uses an exoskeleton with rigid components e.g., linkages and joints, attached to the user's body. The exoskeleton joints are ideally positioned to have an axis of rotation collinear with a natural axis of rotation for adjacent joints. The rigid exoskeleton relies on a framework of linkages connected to the body at select locations via pads and straps to provide the ability to augment human movements that need assistance or otherwise enhance the user's performance, stability, balance, and safety. As the user flexes or extends their limbs, these rigid links move in parallel with the limb, adding considerable inertia to movement. Unfortunately, the rigid exoskeleton also causes considerable restriction to the user's motion that impedes natural and fluid movement.

[0004] In another example, U.S. patent publication 2015 / 0321339 discloses a soft exosuit that generates forces about one or more joints based on anchor elements and connection elements disposed between the anchor elements. The exosuit uses sensors to determine forces on the anchor or connection elements. Actuators are configured to change tension in the soft exosuit in response to the sensors. The exosuit tends to be complex with an overreliance on active components, such as sensors and actuators, to control its operation. The intricate interconnection of anchor elements, connection elements, sensors, and actuators tends to be expensive to manufacture, difficult to configure, slow in response, and overall low reliability. US 2010 / 125230 A1 discloses a back support system designed to reduce the stress exerted on the back of a wearer when he bends over to lift a load. The back support system comprises a harness and a yoke for distributing the load on the shoulder of the wearer. The back support comprises a tension system equipped with elastic cables. The back support comprises leggings including straps designed to wrap around the sole of the wearer and to maintain the force acting on the leg as close as possible to the bone structure of the leg of the wearer. US 4,813,080 discloses a device for supporting the lower back region of a person combined with an upper torso garment. A pair of elongated straps are integrally attached to a support pad and extend from the sides of a back panel to form a pair of loops. Each strap may also include knee pads which are adjustably positioned along the length of each of the straps using a suitable support means. A user can secure the straps to lower anchor straps thereby forming loops which engage the knees of the wearer. With a wearer seated on a flat ground surface and with his knees up in the air, the upper support position is more effective in providing increased support and comfort to the user. US 5,716,307 discloses a body exercise device that includes, among others, a right knee engaging apparatus for selectively maintaining the right member against the right knee of the exerciser. A right side member knee maintaining apparatus elastic sleeve anterior portion of a right side member knee maintaining apparatus elastic sleeve of the right side member knee maintaining apparatus of the right side member has a right side member knee maintaining apparatus elastic sleeve anterior portion flap disposed over most of the right side member knee maintaining apparatus elastic sleeve anterior portion and provides additional cushioning similar to that of a knee pad. US 7,744,511 B2 discloses a device for training sportsmen or physical workout of long-time bed patient. The device comprises a shoulder pad, breast pad, pelvis pad designed as shorts, knee pads performed as bandages and foot pads, all connected together by means of a loading elements with a possibility of being disconnected. US 5,993,362 discloses an exercise device for martial arts conditioning including a belt having rings, a torso harness a hand stirrup for each hand, a knee band for each knee, and an ankle band for each ankle. The knee band includes base pad which is worn against the knee. The knee band aligns the cords in proper placement around the knee to provide guidance and resistance in both the recoil and forward motions to the leg muscles used in kicking.Summary

[0005] It is therefore the object of the present invention to provide an improved human assistance device attachable to a user and comprising a leg strap arrangement, as well as a corresponding method of making a human assistance device.

[0006] This object is solved by the subject matter of the independent claims.

[0007] Preferred embodiments are defined by the dependent claims.Brief Description of the Drawings

[0008] FIGs. 1a-1c illustrate a user wearing a passive P2K suit; FIGs. 2a-2b illustrate the user transitioning from a seated position to standing position with aid from the passive P2K suit; FIGs. 3a-3b illustrate elastic bands in the passive P2K suit; FIGs. 4a-4b illustrate a second embodiment of the passive P2K suit with elastic leg straps; FIGs. 5a-5b illustrate a third embodiment of the passive P2K suit with front torso cross straps; FIGs. 6a-6b illustrate a fourth embodiment of the passive P2K suit with buckles to adjust the upper torso harness; FIG. 7 illustrates further detail of the leg straps and foot anchor; FIGs. 8a-8c illustrate further detail of the leg straps and foot anchor; FIGs. 9a-9b illustrate a fifth embodiment of the passive P2K suit with back support, wherein the example embodiments shown in the figures 1a-9b are not covered by the claims. FIGs. 10a-10c illustrate a sixth embodiment of the passive P2K suit with a backpack assembly; and FIGs. 11a-11c illustrate a seventh embodiment of the passive P2K suit with a backpack assembly and split knee pad. Detailed Description of the Drawings

[0009] The present invention is described in one or more embodiments in the following description with reference to the figures, in which like numerals represent the same or similar elements.

[0010] FIG. 1a shows user 100 wearing potential to kinetic suit (P2K) 102 suitable for human assistance in crouching, squatting, and lifting under load. P2K 102 is a passive personal augmentation suit or strapping system, i.e., no active components, applicable to many types of human activity and physical work, such as moving heavy articles, up and down motion under load, and other repetitive, long-term physical exertion. P2K 102 is capable of storing potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched or squatting position. The potential energy in P2K 102 is released when user 100 moves from the crouched or squatting position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 102 increases endurance, reduces fatigue, and decreases potential for injury associated with such activity, particularly for the user's back, legs, and knees. P2K 102 includes an interconnected arrangement of straps, belts, and braces to provide passively loaded support and reaction for user 100 while assisting with human motion under load. FIG. 1b shows a front view of P2K 102; FIG. 1c shows a back view of P2K 102.

[0011] Upper torso harness 110 includes shoulder straps 112 around the shoulders of user 100, back interconnect strap 114 between shoulder straps 112, front strap 116 with adjustable buckle 118. Back interconnect strap 114 and front strap 116 are affixed to shoulder straps 112 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Shoulder straps 112 extend down the back of user 100 to waist and back belt 120. Waist and back belt 120 wraps around the waist, hips, and lower back area and secures with Velcro or buckles. In one embodiment, belt 120 has a width W1 of 7-18 centimeters (cm). Shoulder straps 112 can slide within upper torso harness 1160 and are affixed to belt 120 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Waist and back belt 120 provides a brace to support the lower back and tightens to squeeze the hips when squatting.

[0012] Thigh straps 130 extend from waist and back belt 120 over the gluteal area and around the thigh area of user 100. Thigh straps 130 connect to belt 120 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. In particular, thigh straps 130 include Y-configured strap 132a over the gluteal area and hamstrings, side straps 132b, and front straps 132c over the quadriceps. Knee support 134 connects to Y-configured strap 132a and side straps 132b with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Knee support 134 includes a pocket or cavity for the knee of user 100, with support material covering the knee and straps around the knee. Knee support 134 and side straps 132b can include pads to provide hard support points for P2K 102. Calf straps 138 connect to knee support 134 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. In particular, calf straps 138 include Y-configured strap 138a over the calf of user 100. Foot anchor 140 connects to calf strap 138 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Foot anchor 140 is configured to connect to a shoe, boot, or directly to the foot, e.g., under and over the foot with an adhesive or sock-like slip-on.

[0013] P2K 102 is modular in construction, configuration, and use. P2K 102 can be configured with various combinations of components described in FIGs. 1a-1c. For example, P2K 102 can be used as waist and back belt 120 with thigh straps 130, knee support 138, calf straps 138, and foot anchor 140, without shoulder straps 112. Configurations with shoulder straps 112 have the advantage of encouraging good posture. The various straps and belts in FIGs. 1a-1c can be implemented using fabric or leather material, elastic bands, cables, or other suitable flexible connecting members. Springs, pulleys, guides, and other compliant members can be used in place of or to augment the straps and belts within P2K 102. P2K 102 is adjustable for size and pre-tensioning the elastic components.

[0014] Consider user 100 wearing P2K 102 in the seated position on seat 142 and holding load 144 in FIG. 2a. P2K 102 stores potential energy in the strapping arrangement, e.g., the elastic strapping stretches and stores potential energy when transitioning from a standing position to a crouched, squatting, or seated position. The potential energy in P2K 102 remains available while user 100 is seated to help with the opposing motion, i.e., standing up under load. Waist and back belt 120 provides a brace to support the lower back and tightens to squeeze the hips when sitting. User 100 stands up from the seated position with load 144, as shown in FIG. 2b. The potential energy in P2K 102 is released when user 100 moves from the crouched, squatting, or seated position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 102 reduces the effort, strain, fatigue, and potential for injury associated such movement in physical labor work environments. A similar concept applies to user 100 standing from the kneeling or crouching position. In one embodiment, knee support 134 includes a torsional spring to aid with transition from a seated, kneeling, or squatting position to a standing position, without the use of active components. Alternatively, knee support 134 uses elastic bands, or a combination of non-elastic and elastic bands, to assist user 100 in the sit to stand transition.

[0015] In general, P2K 102 utilizes a flexible, modular, passive strapping system that, in one embodiment, extends from upper torso harness 110 to waist and back belt 120 and further travels down gluteal area and hamstrings with thigh straps 130 to knee support 134. P2K 102 can further extend from knee support 134 over the calf area with calf straps 138 to foot anchor 140. P2K 102 gains support from upper torso harness 110 and belt 120, as well as the strapping arrangement from the back of the thigh, front of the knee, and back of the tibia to anchor at the foot. Because the straps cross at the waist and over the length of the leg, the strapping arrangement stores energy in the elastic bands or springs during the squatting or crouching motion to be released during transition to the standing position thus assisting with human motion under load. The crossed straps also hold P2K 102 in place during various movements, such as squatting.

[0016] Elastic bands have been found to be particularly effective in areas 146 and 148 (belt 120), area 150 (thigh straps 130), and area 152 (calf straps 138) for assisting with human motion under load, as shown in FIGs. 3a-3b. Elastic bands in areas 146-152 can vary in elasticity and stiffness with any preloading adjustable for the user 100 during the fitting process.

[0017] FIGs. 4a-4b illustrate another embodiment of user 156 wearing P2K 158 suitable for human assistance in crouching, squatting, and lifting under load. FIG. 4a shows a front view of P2K 158; FIG. 4b shows a back view of P2K 158. P2K 158 is a passive personal augmentation suit or strapping system, i.e., no active components, applicable to many types of human activity and physical work, such as moving heavy articles, up and down motion under load, and other repetitive, long-term physical exertion. P2K 158 is capable of storing potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched or squatting position. The potential energy in P2K 158 is released when user 156 moves from the crouched or squatting position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 158 increases endurance, reduces fatigue, and decreases potential for injury associated with such activity, particularly for the user's back, legs, and knees. P2K 158 includes an interconnected arrangement of straps, belts, and braces to provide passively loaded support and reaction for user 156 while assisting with human motion under load.

[0018] Upper torso harness 160 includes shoulder straps 162 around the shoulders of user 156, back interconnect strap 164 between shoulder straps 162, front strap 166 with adjustable buckle 168. Back interconnect strap 164 and front strap 166 are affixed to shoulder straps 162 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Shoulder straps 162 extend down the back to waist and back belt 170. Waist and back belt 170 wraps around the waist, hips, and lower back area and secures with Velcro or buckles. In one embodiment, belt 170 has a width W2 of 7-18 cm. Shoulder straps 162 can slide within upper torso harness 160 and are affixed to belt 170 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Waist and back belt 170 provides a brace to support the lower back and tightens to squeeze the hips when squatting.

[0019] Leg strap arrangement 174 extends down the legs of user 156. Leg straps 174 include Y-configured thigh portion 174a over the gluteal area and hamstrings of user 156, cross-configured knee portion 174b over the front of the knee area, and Y-configured calf portion 174c over the calf area. Thigh portion 174a connect to waist and back belt 170 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Leg straps 174 utilize the bending motion of the ankle and knee for maximum stretching of the elastic bands. Foot anchor 176 connects to calf portion 174c behind the heel with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Foot anchor 176 connects to a shoe, boot, or directly to the foot, e.g., under and over the foot with an adhesive or sock-like slip-on.

[0020] P2K 158 is modular in construction, configuration, and use. For example, P2K 158 can be used as waist and back belt 170 with leg straps 174, without shoulder straps 162. The various straps and belts in FIGs. 4a-4b can be implemented using fabric or leather material, elastic bands, cables, or other suitable flexible connecting members. P2K 158 stores potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched, squatting, or seated position. The potential energy in P2K 158 is released when user 156 moves from the crouched, squatting, or seated position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 158 is adjustable for size and pre-tensioning the elastic components.

[0021] FIGs. 5a-5b illustrate a modified P2K 158, similar to FIGs. 4a-4b, with front torso cross straps 178 for additional support.

[0022] FIGs. 6a-6b illustrate a modified P2K 158, similar to FIGs. 4a-4b, with buckles 180 and 182 for adjustment and attachment points on the front of P2K 158, and buckles 184 for adjustment and attachment points on the back of P2K 158.

[0023] FIG. 7 shows further detail of leg straps 174 from waist and back belt 170 to foot anchor 176. Leg straps 174 can be made with elastic bands crossing at knee portion 174b, i.e., in front of the knee. Leg straps 174 can include buckles 188 or Velcro for ease of donning and doffing P2K 158. The user's foot slides over heel strap 176a and into arch wrap 176b to fix leg straps 174 in place. Foot anchor 176 can be attached over a shoe.

[0024] FIG. 8a shows leg straps 174 crossing in front of knee 190. Leg straps can be positioned to cross above, directly on, or below the knee cap, as shown by the range of arrows 189. FIG. 8b shows leg straps 174 crossing above and below the knee with pocket 192 around the knee cap for comfort and stability. A first single strap 194 extends above pocket 192 to thigh portion 174a. A second single strap 196 extends below pocket 192 to calf portion 174c. FIG. 8c shows leg straps 174 crossing in front of the knee with pocket 198 around the knee cap for comfort and stability. Thigh portion 174a connects to an upper point of pocket 198, and calf portion 174c connects to a lower point of pocket 198.

[0025] FIGs. 9a-9b illustrate another embodiment of user 200 wearing P2K 202 suitable for human assistance in crouching, squatting, and lifting under load. FIG. 9a shows a front view of P2K 202; FIG. 9b shows a back view of P2K 202. P2K 202 is a passive personal augmentation suit or strapping system, i.e., no active components, applicable to many types of human activity and physical work, such as moving heavy articles, up and down motion under load, and other repetitive, long-term physical exertion. P2K 202 is capable of storing potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched or squatting position. The potential energy in P2K 202 is released when user 200 moves from the crouched or squatting position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 202 increases endurance, reduces fatigue, and decreases potential for injury associated with such activity, particularly for the user's back, legs, and knees. P2K 202 includes an interconnected arrangement of straps, belts, and braces to provide passively loaded support and reaction for user 200 while assisting with human motion under load.

[0026] Upper torso harness 210 includes shoulder straps 212 around the shoulders of user 200, upper back interconnect strap 214 between shoulder straps 212, front strap 216 with adjustable buckle 218. Back interconnect strap 214 and front strap 216 are affixed to shoulder straps 212 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Shoulder straps 162 extend down the back to back support 220 and affix with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Lower back interconnect strap 219 is connected above back support 220.

[0027] Leg strap arrangement 224 extends down the legs of user 200. Leg straps 224 include Y-configured thigh portion 224a over the gluteal area and hamstrings of user 200, cross-configured knee portion 224b over the front of the knee area, and Y-configured calf portion 224c over the calf area. Thigh portion 224a connects to back support 220 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Leg straps 224 utilize the bending motion of the ankle and knee for maximum stretching of the elastic bands. Foot anchor 226 connects to calf portion 224c behind the heel with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Foot anchor 226 connect to a shoe, boot, or directly to the foot, e.g., under and over the foot with an adhesive or sock-like slip-on.

[0028] P2K 202 stores potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched, squatting, or seated position. The potential energy in P2K 202 is released when user 200 moves from the crouched, squatting, or seated position to return upright in stance, thereby assisting the user in the motion, particularly while under load.

[0029] FIGs. 10a-10c illustrate another embodiment of user 230 wearing P2K 232 suitable for human assistance in crouching, squatting, and lifting under load. FIG. 10a shows a front view of P2K 232; FIG. 10b shows a side view of P2K 232; FIG. 10c shows a back view of P2K 232. P2K 232 is a passive personal augmentation suit or strapping system, i.e., no active components, applicable to many types of human activity and physical work, such as moving heavy articles, up and down motion under load, and other repetitive, long-term physical exertion. P2K 232 is capable of storing potential energy in the strapping arrangement, e.g., potential energy is stored in elastic strapping when transitioning from a standing position to a crouched or squatting position. The potential energy in P2K 232 is released when user 230 moves from the crouched or squatting position to return upright in stance, thereby assisting the user in the motion, particularly while under load. P2K 232 increases endurance, reduces fatigue, and decreases potential for injury associated with such activity, particularly for the user's back, legs, and knees. P2K 232 includes an interconnected arrangement of straps, belts, and braces to provide passively loaded support and reaction for user 230 while assisting with human motion under load. Portions of P2K 232 can be reflective material for safety.

[0030] Upper torso harness 240 includes backpack assembly 242 with shoulder straps 244. Backpack assembly 242 can be made with an air mesh material with openings to allow for air-flow on the back and reduces the overall weight. Backpack assembly 242 can include a combination of elastic material and webbing material. Backpack assembly 242 covers a portion of back area of user 230 to improve ergonomics and comfort, relieve lower back pressure, and ease of donning and doffing. Shoulder straps 244 extend over the shoulder and affix to backpack assembly 242 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Shoulder straps 244 can slide relative to backpack assembly 242 for user comfort. Buckles 246 in shoulder straps 244 provide adjustment and attachment points. Buckles 246 can be used to adjust elastic pre-load (strength of the suit when squatting down) and enable P2K 232 to fit different body sizes. Back support 250 connects to backpack assembly 242 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Side straps 252 extend from shoulder straps 244 to back support 250. Side straps 252 can include elastic material with buckles for adjustments and comfort, see FIG. 11a. Back support 250 slides or moves relative to backpack assembly 242 to minimize medial / lateral relative motion and provide pre-tensioning.

[0031] Leg strap arrangement 258 extends down the legs of user 230. Leg straps 258 include thigh portion 258a over the gluteal area and hamstrings of user 230, knee portion 258b over the front of the knee area, and calf portion 258c over the calf area. Thigh portion 258a connects to back support 250 with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Seat webbing 254 is connected to back support 250 and thigh portion 258a with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Seat webbing 254 is an elastic material for storing and releasing power and comfortable load distribution. Knee portion 258b includes a knee pad for knee protection while kneeling on the ground. Leg straps 258 utilize the bending motion of the ankle and knee for maximum stretching of the elastic bands. Foot anchor 260 connects to calf portion 258c behind the heel with sewing, rivets, buckles, buttons, adhesive, Velcro, or other secure attachment mechanism. Foot anchor 260 crosses over the talus and then wraps around the arch. Foot anchor 260 can be configured to connect to a shoe, boot, or directly to the foot.

[0032] The various straps and belts in FIGs. 10a-10c can be implemented using fabric or leather material, elastic bands, cables, or other suitable flexible connecting members. P2K 232 stores potential energy in the strapping arrangement, e.g., the elastic strapping stretches and stores potential energy when transitioning from a standing position to a crouched, squatting, or seated position. The potential energy in P2K 232 remains available while user 230 is seated to help with the opposing motion, i.e., standing up under load. When user 230 stands up from the seated position under load, similar to FIG. 2b, the potential energy in P2K 232 is released to assist the user in the motion. P2K 232 reduces the effort, strain, fatigue, and potential for injury associated such movement in physical labor work environments.

[0033] FIGs. 11a-11c illustrate another embodiment of user 230 wearing P2K 232 with buckles 270 in side straps 252. Buckles 270 in combination with elastic material in side straps 252 provide further adjustments, support, and comfort for user 230 in donning, doffing, and wearing upper torso harness 240 and backpack assembly 242. Side straps 252 with buckles 250 keep back support 250 and seat webbing 254 in place during motion, e.g. while walking. Knee portion 258b includes connection point 272 to connect and separate a left half of the knee pad and a right half of the knee pad, which aids with donning and doffing leg strap arrangement 258. For example, user 230 brings the left half of the knee pad and the right half of the knee pad together and secures with connection point 272. To remove leg strap arrangement 258, user 230 detaches the left half of the knee pad from right half of the knee pad at connection point 272. Connection point 272 can be Velcro, buckles, buttons, or other removable attachment mechanism.

[0034] While one or more embodiments of the present invention have been illustrated in detail, the skilled artisan will appreciate that modifications and adaptations to those embodiments may be made without departing from the scope of the present invention as set forth in the following claims.

Claims

1. A human assistance device, comprising: an upper torso harness (240) configured to attach to a user (230); and a leg strap arrangement (258) extending down the legs of the user and including a thigh portion (258a) over a gluteal area and the hamstrings of the user, the leg strap arrangement further including a knee portion including a knee pad (258b) over the front of the knee area of the user, and the leg strap arrangement further including a calf portion (258c) over the calf area of the user, wherein the thigh portion is adapted to affix to the upper torso harness proximate to the gluteal area of the user and configured to extend down from the gluteal area over the hamstrings of the user to the knee pad (258b), and wherein the calf portion is configured to extend down from the knee pad over the calf area of the user to a foot anchor (260), wherein the upper torso harness and leg strap arrangement comprise elastic material.

2. The human assistance device of claim 1, wherein the knee pad (258b) includes a connection point (272) configured to separate a left half of the knee pad and a right half of the knee pad.

3. The human assistance device of claim 1, wherein the upper torso harness (240) includes a backpack assembly (242).

4. The human assistance device of claim 1, further including a seat webbing (254) over the gluteal area of the user (230), wherein the seat webbing is connected to a back support (250) of the upper torso harness (240) and to the thigh portion (258a) of the leg strap arrangement (258), and wherein the seat webbing is an elastic material for storing and releasing power and comfortable load distribution.

5. A method of making human assistance device, comprising: providing an upper torso harness (240) configured to attach to a user (230); and connecting a leg strap arrangement (258) to the upper torso harness proximate to a gluteal area of the user, wherein the leg strap arrangement extends down the legs of the user and includes a thigh portion (258a) over the gluteal area and the hamstrings of the user, the leg strap arrangement further includes a knee portion including a knee pad (258b) over the front of the knee area of the user, and the leg strap arrangement further includes a calf portion (258c) over the calf area of the user, wherein the thigh portion is configured to extend down from the gluteal area over the hamstrings of the user to the knee pad (258b) and wherein the calf portion is configured to extend down from the knee pad over the calf area of the user to a foot anchor (260), wherein the upper torso harness and leg strap arrangement comprise elastic material.

6. The method of claim 5, wherein the knee pad (258b) includes a connection point (272) configured to separate a left half of the knee pad and a right half of the knee pad.

7. The method of claim 5, wherein the upper torso harness (240) includes a backpack assembly (242).

8. The method of claim 5, further including a seat webbing (254) over the gluteal area of the user (230), wherein the seat webbing is connected to a back support (250) of the upper torso harness (240) and to the thigh portion (258a) of the leg strap arrangement (258), and wherein the seat webbing is an elastic material for storing and releasing power and comfortable load distribution.