Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Vacuum valve










Image Number 17 for United States Patent #7862002.

To provide a vacuum valve with an improved endurance of a bellows, a vacuum valve comprises: a valve section including a first port, a second port, a valve seat provided between the first and second ports, and a valve element movable into or out of contact with the valve seat; an actuator section including an orifice through which an operating fluid is supplied to the actuator section, and a piston coupled to the valve element, the piston being allowed to operate according to changes of pressure of the operating fluid to apply a driving force to the valve section; and a bellows which can be contracted and elongated as the valve element vertically moves upward and downward. The orifice is designed to have an effective sectional area determined so that an operating speed of the valve element and the piston is controlled to a predetermined speed for preventing damage of the bellows.








 
 
  Recently Added Patents
Solid state lighting devices with cellular arrays and associated methods of manufacturing
Placental tissue grafts
System and method for computational unification of heterogeneous implicit and explicit processing elements
Base station device and wireless communication method
Radiation imaging device
Predicting popularity of electronic publications
Optimizing federated and ETL'd databases with considerations of specialized data structures within an environment having multidimensional constraint
  Randomly Featured Patents
Cutting board with condiment caddy
Gas pressurized encapsulation for an actuator
Putter head
Gun and method of mounting a sight thereon
Method and device for the acquisition of signals while drilling
Method and apparatus for generating visible signal for data transmission frame in visible-light communication system
Vial access adapter
Method and system for efficient control of the execution of actions in an object oriented program
Power management systems and methods in a hybrid vehicle
Horizontal modular dry irradiated fuel storage system