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33 results about "Back strain" patented technology

Back strain is the injury occurring to muscles or tendons. Due to back strain, the tendons and muscles supporting the spine are twisted or pulled. Chronic back strain occurs because of the sustained trauma and wearing out of the back muscles Acute back strain can occur following a single instance of over stressing of back muscles, as in lifting a heavy object. Chronic back strain is more common than the acute type.

Method for measuring swing arm ball head stress

Provided is a method for measuring swing arm ball head stress. First, four strain pieces are bound on the front largest circle, the back largest circle, the left largest circle and the right largest circle of a swing arm ball head at equal distance respectively and are parallel to the axial direction of a ball head pin. The front strain piece and the back strain piece are connected in series to form a limb half bridge, and when the swing arm ball head bears front-back direction stress of a vehicle, X-direction stress of the swing arm ball head can be measured by measuring the output voltage of a bridge circuit. The left strain piece and the right strain piece are connected in series to form a limb half bridge, and Y-direction stress of the swing arm ball head can be measured. Then an actuator is used for carrying out longitudinal and lateral loading on the swing arm ball head respectively and recording loading force, data collecting equipment is used for recording corresponding strain, and a changing relationship curve of strain and force is obtained by fitting. Finally, measuring is carried out. According to the method, a special force sensor is of no need, cost is low, measuring results are accurate, real-vehicle measuring can be carried out on stress of various swing arm ball heads of vehicles of different types, and universality is high.
Owner:CHONGQING CHANGAN AUTOMOBILE CO LTD

Ergonomic, multi-purpose, auxiliary handle assembly (tool attachment)

InactiveUS20190344423A1Greater ‘lifting powerEasy to operateMetal-working hand toolsEngineeringBroom
An ergonomic, multi-purpose, attachable and adjustable, auxiliary handle assembly that provides a single supplementary handle for multiple tools and implements. The handle assembly is comprised of an “L”-shaped cylindrical bar that is combined with an adjustable yet lockable, hinged clamp that can be conveniently positioned along the primary cylindrical shaft of elongated tools and implements. This adjustable placement of this new auxiliary handle provides greater convenience in utilizing the tool to maximize its leverage or lifting capability while reducing the risk of muscular strain and fatigue. The adjustable feature allows operators of different sizes; tall to short, to conveniently place the adjustable handle on their tool or implement, at a position on the elongated shaft, that maximizes their preferred handling of the tool for operation. This auxiliary handle allows the user to maximize the effective use of the tool while reducing arm and back strain or injury. In addition to the ergonomic benefits, this new auxiliary handle provides multiple functional benefits for more effective lifting, pulling and pushing operation of tools and implements. In addition, the auxiliary handle enables operational use of tools and implements, with all the above-mentioned benefits, for both day and night use, given the convenient optional lighting component attached to the “L”-shaped handle that sheds light on the tool or implement head (where the head is the shovel, rake, hoe, broom or other tool end attachment).
Owner:DOHERTY ROBERT JAMES +2
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