Title: Carbon brush assembly

Abstract: An electrically conductive helical spring has a series of closely spaced, inversely extending inner turns which receive and retain a mounting projection on a carbon brush to maintain excellent electrical continuity between the brush and the spring and to maximize the active length of the spring within the dimensional limitations of its normal mounting space.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Dupuis, Maurice Victor (Raytown, MO, US)
Hohman, Frederick William (Spring Lake, MI, US)

Application Number: 419651
Filing Date: 1973-11-28
Publication_date: 1976-07-20
Assignee:
Primary Class(es): 310/245
Other Classes:
US Patent Ref:

1933628	Nov, 1933	Kitto	310/247.
2045293	Jun, 1936	Carlson	310/245.
2428250	Sep, 1947	Thomas	310/248.
2430279	Nov, 1947	Duryee	310/247.
2454909	Nov, 1948	Bylund	310/247.
2477352	Jul, 1949	Stark	310/247.
2482921	Sep, 1949	Malchus	310/247.
2536958	Jan, 1951	Rudat	310/247.
2748302	May, 1956	Boeckel	310/247.
2813208	Nov, 1957	Ritter	310/247.
2870355	Jan, 1959	Rohrbach	310/247.
2889530	Jun, 1959	Straub	310/247.
2987639	Jun, 1961	Bayless	310/247.
2991379	Jul, 1961	Van Dam	310/247.
3431446	Mar, 1969	Petersen	310/247.

Other Refs: 834,902

May, 1960	UK

Primary Examiner: Skudy, R.
Assistant Examiner:
Attorney: Schmidt, Johnson, Hovey & Williams