Resources Contact Us Home
Artificial Christmas tree

Image Number 2 for United States Patent #4805075.

An artificial Christmas tree having a hollow tree trunk and a plurality of branches. Each branch has a connector for attaching it to the tree trunk. Each connector includes a pair of electrical contacts connected to electric lamps disposed in the branch with the electrical contacts engaging a mating pair of electrical contacts in the tree trunk when the branch is attached thereto. Electrical power is supplied to the lamps from a conventional household electrical power source through an electrical circuit inside of the hollow tree trunk interconnecting the mating electrical contacts.

  Recently Added Patents
Power converter and method of power conversion
High voltage circuit for electrical stimulation
High damage threshold frequency conversion system
Injection molding method and injection molding machine
Promoting content
Tag-based apparatus and methods for neural networks
Arcuate motion control in electrostatic actuators
  Randomly Featured Patents
Intra-operative diagnostic ultrasound multiple-array transducer probe and optional surgical tool
Centrifugal clutch and method of producing same
Total artificial heart comprising two disconnected pumps associated into one functionally indissociable unit
Packoff leak detector
Semiconductor manufacturing apparatus and method for measuring in-situ pressure across a wafer
Apparatus and method for measuring temperature dependent properties of liquid
Method and system for wellbore communication
Connector system
Toner for full color developing
Chair cushion