One way hinges    

• Features
• Comparision with oil damper
• Specifications for the standard models
• Application

• Compact, thin and high-torque, the width is 13mm for 0.1 to 1.0N.m type (0.88 to 8.85 lbf.in) or 19mm for 1.0 to 3.0N.m type (8.85 to 26.55 lbf.in); therefore, it requires minimum mounting space.
• It has a small width but with a high torque which has achieved a minimum mounting space.
• Free Stop capable of stopping a lid at any position and supporting its load.It is able to keep the lid hold up at any position with a certain torque and doesn't fall down.
• Operation condition: 
• -0.5˚C to +60˚C, 90%RH
• Not easily affected by environmental conditions.
• The wide range of the working condition is avaibale from -5C to +60C with 90%RH.
• Wide to torque setting range
• A standard setting torque is from 0.1 to 3.0N.m (0.885 to 26.55lbf.in)by an increment of 0.1N.m(1lbf.in). units within the range.
• Standard torque is set from 0.1 to 3.0N.m by 0.1N.m each step, which provides a wide range of torque.
• Two directions are available:  L and R, are available in terms of torque generation direction.
• Easy mounting:
• 2 general types of shapes are available: a standard type and a flange type. Usage depends on the mounting conditions requirement.
• 1 special type is the bracket type, available for special requirement.