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30results about How to "Protect the face" patented technology

Hybrid threaded connection for expandable tubulars

An expandable threaded connection between segments of expandable tubulars that allows the threaded tubular connection to withstand the stresses and deformations imposed on the connection by the tubular expansion process is disclosed. The present invention is a unique hybrid threaded connection that utilizes two complementary thread segments to form the expandable threaded connection. The first segment of the threaded connection utilizes standard box and pin threads such that the threads on the pin member in the area of the first segment fully engage the mating threads on the box member. The second segment of the threaded connection has the threads machined on the pin member in a manner such that material is removed from the stab flank of the pin threads to reduce the standard width of the pin threads. In contrast to the pin threads of the second segment, the box threads of the second segment are standard thread width and, thus, are the same thread width as the box threads in the first segment. The use of the reduced thread width in the pin threads of the second segment allows for a loose fit between the pin threads of the second segment and the box threads of the second segment. As the threaded connection is expanded, the loose fit between the pin and box threads of the second segment allows radial and axial movement between the pin and box threads of the second segments of the threaded connection without causing disengagement of the threaded connection. The disclosed hybrid threaded connection thus utilizes multiple thread segments in which the second thread segment accommodates the stresses and deformations generated by the radial expansion process while the threads of the first segment maintain the coupling strength and the pressure integrity of the threaded connection.
Owner:WEATHERFORD TECH HLDG LLC

Chainsaw setting machine

In a chainsaw sharpener, a round shaft-shaped grinding tool (7) is attached to an end of a drive shaft of a handy type electric motor (3). Mounted on and forward of the electric motor of a sharpener body (2) via a mounting portion (9) is a guide body (8) having, formed therein, an upper plate face (80) and wall faces (81a to 81e) which have a substantial X-shape as seen in plan view, extending in two directions, and which are fit into and along an upper part of the saw chain in alignment with a sharpening angle of either a left or right cutter blade (31, 32) of a saw chain (30). Formed at a substantially central surface of the guide body (8) is an exposure portion made of openings (85, 86) which make it possible to watch, from above, the grinding tool (7) and a cutting edge of a cutter blade to be sharpened. Provided on inside or side of the exposure portion is a guide portion (87) for pressing, from above, the cutter blade to be sharpened so as to prevent the cutter blade from wobbling or tilting, and further to define an accurate cutting edge angle. According to this structure, with just an operation of placing the guide body along a position aligned with the sharpening angle of either the left or right cutter blade, and pushing it forward, it is possible to stabilize the posture of the cutter blade, thereby enabling sharpening aligned with an accurate sharpening angle and cutting edge angle, and to efficiently do the sharpening work.
Owner:NISHIGAKI INDS

Protective isolation hood

The invention relates to a protective isolation hood. The hood comprises a hood body and an isolation film connected with the hood body and used for sealing the hood body, the hood body and the isolation film jointly define a closed internal cavity, and the isolation film is provided with a first opening for nose breathing and a second opening corresponding to an oral cavity; and the hood body isprovided with an operation hole, the operation hole is in communication with the internal cavity, the operation hole is provided with an isolation protection member used for opening / closing, the isolation film is used for being attached to the face of a patient, and the hood body is used for covering the face of the patient so that the internal cavity can be in connection and communication with the oral cavity of the patient. According to the isolation hood, medical staff can conveniently treat the patient through the oral cavity, in the treatment process, the face of the patient can be effectively isolated and protected, the face of the patient is prevented from being polluted, the makeup of the patient is prevented from being scratched, aerosol, splashed secreta and the like can be effectively isolated, the problems that the aerosol pollutes the environment, and iatrogenic infection occurs are solved, and the hood is especially suitable for oral surgery in the stomatology department.
Owner:SICHUAN CANCER HOSPITAL

Production protecting device for hardware products

The invention discloses a production protecting device for hardware products. The production protecting device for the hardware products comprises a glass plate, a breathable net, plastic nets, shoulder brackets, shoulder rests, openings, springs, supporting plates, rotation shafts, rolling wheels, anti-skid pads, rubber pads, shoulder belts, hook and loop fasteners, a waist bracket and a waist belt. According to the production protecting device for the hardware products, the glass plate, the breathable net and the plastic nets can effectively prevent particles from being splashed to the faceof a user from the surfaces of parts of the hardware products when the hardware products are machined, the face of the user can be well protected, and the condition that when the hardware products aremanufactured by the user, the particles or lumps generated through drilling or cutting are splashed to the face of the user to cause occupational injuries is prevented; the glass plate and the plastic nets can be well fixed to the body of the user through the shoulder brackets and the waist bracket, therefore, the production protecting device can move along with the user when the user moves, andthe hardware products can be conveniently machined by the user. The production protecting device for the hardware products is simple in structure, convenient to use and suitable for being used and popularized.
Owner:JIANGSU DINGSHIDING PRECISION TECH
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