Many products involve the use of spring hinges. Makeup compacts and other personal skin and beauty care products are packaged in containers fitted with spring hinges. Many other varieties of small plastic containers are also fitted with spring hinges to make their use more convenient for consumers. Varied other consumer products also make use of spring hinges. Read More…
Marlboro Manufacturing, Inc.Alliance, OH | 330-935-2445
We take our customer evaluations as our only measure of success. If our customers are not happy, we are not happy! We will work with you until we find the right hinges solution for you.$$$
S & D Products, Inc.Bartlett, IL | 800-989-6365
We are here to provide you with any hinge you could ever possibly need! We are the hinge specialists committed to bringing you a level of customer service that is unmatched by the competition.$$$
Hardware Mfg.St. Louis, MO | 314-436-0432
Hardware Mfg. supplies stock inventory parts in addition to creating custom components for OEM and resellers. We work with a number of different industries such as agriculture, drug tablet, livestock, truck equipment, conveyors, and more.$$$
Jefco ManufacturingFort Lauderdale, FL | 800-684-4643
Jefco Mfg. has been a leader in the industry for over 40 years. With our experienced engineering and production team coupled with cutting edge technology, Jefco produces quality products for the Industrial, Marine, Aerospace, Defense, and Medical industries. We work closely with customers to meet/exceed their needs and design specs. Jefco has the ability to produce practically any design in any Mat. gauge, pin size, width, or length, in a variety of materials including Carbon fiber and Titanium.$$$
S & S Hinge CompanyBloomingdale, IL | 800-332-1227
Since 1932, the S & S Hinge Company has been providing customers with the best-quality continuous hinges possible. We have accomplished this by implementing a Lean manufacturing strategy that allows our company to do more with less.$$$
Sierra Pacific Engineering & Products (SPEP)Long Beach, CA | 800-433-5554
Our company is the true hinges expert. We own over 50 patents for fasteners and we are completely ISO 9000 certified. Our products are made with the customer in mind, and we take your requests as requirements for service.$$$
These products range from compasses, hand-held video game systems and pencil boxes to sunglasses and glasses cases. In the context of door hardware, spring hinges are often installed as cabinet hinges to help keep cabinet doors closed tightly when not in use. Some gate hinges can also be fitted with springs to keep them closed tightly or to make their use easier.
Full-sized doors in homes, offices and in other contexts generally are not fitted with springs to the extent that they used to be. Springs have widely been replaced by hydraulic door positioning equipment, though old storm doors in residences may still be equipped with springs.
The principle of operation for all spring hinges is the same, though spring hinge configurations can vary. A spring is a mechanical energy storage medium; when a spring is compressed, that energy is stored until the compressive forced exerted on the spring dissipates, at which point the spring expels the stored energy and returns to its pre-compression form.
Spring hinges take advantage of this in a number of ways. The simplest way is through the coiling of a rigid metal around the pin of a butt hinge. Once tightly coiled, the energy stored in the coil tries to release itself; in other words, the coil tries to uncoil itself. As it does this, the metal forces itself against the metal plates of the hinge, pushing it open.
This is what happens in small container lids when they are open. The hinge can be pushed closed if the compressive force is greater than the force exerted by the coil. In order to remain closed, the compressive force must not relent, or the hinge will reopen. Other spring hinge varieties can be more complicated, but the simple principle of stored energy applies to all configurations.