USPC 416/146
USPC 416/146 was a patent technology category for combined or convertible impellers (or for other combined or convertible fluid reaction surfaces, but examples seem rare). This subclass has no subclasses within or beneath it.
Further description, paraphrased from USPTO site.[1] Apparatus (1) claimed in combination with features other than impeller structure, supporting or attaching means therefor or impeller driving or driven means and not provided for in preceding subclasses or (2) having means or parts capable of structural rearrangement or modification to selectively provide either an impeller organization having some other mode of operation or a device of some other description. Impellers incorporating driving mechanisms and transmission clutches or brakes are included.
Examples of a combined feature are: a programmer, a timer, or check controlled apparatus to control operation, or a cleaner for the working member. An example of a convertible feature is an oar which is relocated or rearranged to act as a sail or a mast. Excluded as combined features under this definition are the necessary appurtenances for any relatively moving surfaces, e.g., lubricating, sealing, bearing or packing elements.
USPC 416/146 had two divisions:[2]
- 146A Hub lubrication or seal
- 146R the residual, category
References
Patents in category USPC 416/146R
- Patent US-1903-732568 (Inventors: Charles H. Lee, Filing date: 1903-03-30)
- Patent US-1913-1076060 (English title: Ballast device, Inventors: Ralph A.D. Preston, Filing date: 1912-05-27, Applicant firm: Goodyear Tire & Rubber)
| Enclosing categories | USPC 416 |
|---|---|
| Subcategories | |
| Keywords | Propellers |
| Start year | |
| End year |
