Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Sun compass










Image Number 7 for United States Patent #4028813.

A sun compass comprises a base, including a transparent hemisphere, a body movable within the base, and a plate including a dial face movable upon the body. Actuating members are connected to the plate and body for selectively moving the plate relative to the body and moving the body relative to the hemisphere. The actuating members are accessible externally of the hemisphere and include rotatable knobs having scales associated therewith for indicating the amount of movement of the plate and body. A transparent hemispherical top is mounted over the base hemisphere.








 
 
  Recently Added Patents
(4927
Display panel and gate driving circuit and driving method for gate driving circuit
Image-capturing device and projection automatic calibration method of projection device
Traffic signal mapping and detection
Pattern data conversion for lithography system
Automatic misalignment balancing scheme for multi-patterning technology
Advocate for facilitating verification for the online presence of an entity
  Randomly Featured Patents
Breathing apparatus
Power-on initializing circuit
Audio receiver
Device for rotating and simultaneous hardening by electric induction
Position detecting apparatus, and optical apparatus comprising this and position detecting method
Power control of image forming apparatus
Motor vehicle tool chest
Video streaming parameter optimization and QoS
Method and device for treating substrates
Tetralones with pharmacological activity, compositions containing them