Back to results
US 3,969,970 AGranted
Transparent grand piano tops
AssigneeLibbey-Owens-Ford Co.
InventorsHoward R. Swift, Kenneth C. Livingston
Life of this patent
Estimating the term…
Abstract
This application discloses a grand piano with a transparent lid or cover, and a special hinge structure mounting the lid for pivotal movement into open and closed positions.
Claims6
The combination, with a case for a grand piano that includes means for holding a cover therefor raised and in an open position;
- of a transparent cover shaped to fit said case, and hinge means embracing a margin of said transparent cover and mounted on said case to permit pivotal movement of said cover into open and closed positions;
- and in which a part of said hinge means comprises a pair of L shaped members positioned with the legs thereof on opposite sides of said margin of said transparent cover and the bottoms thereof overlapping an edge of said cover and in sliding relation to each other, means for retaining said members in embracing relationship to said margin, and means mounting one of said members on said case for pivotal movement relative thereto.
Dependencies are inferred from the claim text.