Product showcase
Motion control and counterbalancing through precision spring products
John Evans’ Sons is ‘America’s oldest spring maker’. Founded in 1850, it manufactures precision springs, wire forms, mechanical assemblies and stampings. It is a leading manufacturer for the medical equipment industry and has provided spring assemblies for many of the world’s largest medical corporations. Its quality assurance procedures have been surveyed and approved by more than 300 of the world’s largest corporations. By employing ISO 13485:2016 and ISO 9001:2015, in conjunction with cutting-edge inspection and calibration systems, it can ensure that customers’ most exacting requirements are met. John Evans’ Sons provides three different types of spring: ■ Constant-force springs: provide a smooth range of motion and a constant load in the extending or retracting direction. This spring design has no inertia to overcome when considering the initial position starting forces. They are compact and mount easily to existing hardware.
John Evans’ Sons serves large medtech companies.
■ Spiral torsion springs: allow rotation in two directions and a ‘return to centre’ capability. Spiral torsion springs are normally used in applications requiring less than 360° rotation – generally used to obtain a large amount of torque with a small amount of rotation. ■ Power springs: store rotational energy by being stressed when wound around the arbor. Delivers rotational energy to the arbor when it rotates, by
expanding to the maximum curvature allowed by the keeper.
Founded in Sweden in 1675, Lesjöfors is operating on a global scale in the development and manufacturing of technical springs, formed/stamped parts, gas springs and metal conveyor belts. With a workforce of over 2,500 at over 35 production facilities globally, the Lesjöfors Group ranks as a leading company in the springs industry. John Evans’ Sons, part of Lesjöfors Group, is eager to discuss the design requirements and spring challenges in clients’ various design and prototype phases. ●
John Evans’ Sons /
www.springcompany.com
An expert in producing medical device springs
Ming Tai Industrial is a professional manufacturer of steel strip springs for medical device applications, including: ■ constant force springs ■ constant torque springs ■ constant force springs for carbon brush ■ power springs and prestressed power springs ■ variable force springs ■ spring-strip tubes ■ plus assembly and mounting service
High-precision steel strip springs. Ming Tai has helped many medical device
manufacturers successfully develop new products. Innovative products include a pen-type drug injector, highly adjustable monitor-and-keyboard-integrated medical workstation, highly adjustable patient bed trapeze, highly adjustable patient bedside table, Bowden cable for endoscopes and draw-wire encoder for MRT machines. The performance of Ming Tai’s steel strip springs and the company’s manufacturing service have gained much praise and appreciation from customers. Ming Tai is capable of providing customers with technical support
during the development procedure and prototype, through to trial runs, mass production, spring mounting and assembly. Each manufacturing procedure, including steel strip slitting, heat treatment, edge trimming and forming process, is a consistent production and is completed in-house to ensure the highest quality is achieved. Ming Tai also has precision instruments to do force, torque and product-life testing to ensure quality, and the company is certificated with ISO 9001:2008 and RoHs. There are a number of different spring design possibilities for a given
application, and Ming Tai suggests consultation with one of its engineers early in the design phase. Ming Tai can create an optimised solution for any spring demand. Custom designs are available as well. Based on the over 50 years of experience, Ming-Tai equips comprehensive know-how in assisting customers to solve each kind of steel strip spring demand. Ming-Tai provides integrated service from spring design consulting to high precision manufacturing. Even if it is a rough idea initially, Ming-Tai is capable of turning it into an optimised spring product to fulfill your individual needs. ●
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Ming Tai Industrial /
www.powerspring.com.tw www.medicaldevice-developments.com
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