Patents by Inventor Silas Spaulding

Silas Spaulding has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4973205
    Abstract: An apparatus is set forth wherein a hand drill includes a conventionally configured elongate housing with an elongate orthogonally extending handle relative thereto, with a forwardly mounted collet to receive drill bits therewithin. The apparatus further includes a transparent drill bit housing pivotally mounted to an upper surface of the central housing body of the drill formed with a snap-fit cover to receive drill bits in a convenient and accessible manner. A bifurcated chuck-key holder includes resilient legs defining a slot to resiliently secure a chuck-key therewithin. A series of spirit levels are further provided wherein the levels include a mercury encapsulate leveling member to accommodate vibration in use of the drill, wherein the levels are positioned within an extension housing of the drill bit housing to provide various visible orientations of the levels during use of the drill.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: November 27, 1990
    Inventor: Silas Spaulding