Apparatus for the Filtration of Radio Wave Signals (Patent No: 303779)

Inventor: Stevens, Robert Herbert

Location: Edmonton

Comments: N/A

Description: Robert Herbert Stevens, Edmonton, Alberta, Canada, 9th September, 1930. Filed 22nd October, 1928. Serial No. 342,576.

Claim.—1. Apparatus for the filtration of radio wave signals comprising in combination a pair of spiral coils, a plate of conducting material inductively associated with the coils and between the same, radio receiving apparatus connected to the aforesaid plate, and a pair of ground plates on the outer side of the coil inductively associated therewith.

2. Apparatus for the filtration of radio wave signals, comprising a casing, a series of spiral coils, a series of plate members, and a suitable dialectic separating the coils from the plates.

3. Apparatus for the filtration of radio wave signals, comprising a series of spaced apart spiral coils, having their planes parallel, a plate insulated from and lying between said coils, and plate members insulated and lying adjacent the outer face of each coil.

Claims allowed, 3.