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Music > Instruments > Stringed > Pianos > Hammers Actions Hammers ActionsHammers Actions patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.05/10/07 - 20070101852 - Grand piano action mechanism An action mechanism of a mechanical piano including a wippen accommodated on a wippen rail, a repetition lever with a flange, a jack, a hammer, and a pair of permanent magnets arranged so as to repel each other. The first magnet is attached to the wippen and the second magnet ... 03/29/07 - 20070068360 - Hammer keyboard system and chassis A hammer with simplified structure and reduced costs that maintains its capability as a mass body to impart a touch weight. The hammer is configured such that it is possible to fix the two mass plates to the metal base plate by means of a single rivet. Therefore, the number ... 03/29/07 - 20070068359 - Friction in a grand piano completely eliminated by a third lever In a grand piano action friction between the jack and the knuckle completely eliminated by a third lever. ... 09/14/06 - 20060201308 - Action for piano An action for a piano is provided for clarifying a timing of let-off, improving the sequential touching capabilities, and consequently realizing high playing performance excellent in expressive power in a simple structure without adversely affecting the key touch feeling. The action for a piano swings a hammer in response to ... 08/03/06 - 20060169123 - String-striking device for piano A string-striking device for a piano, where a static loading acting on a fore-end on the playing side of a key can be easily adjusted. A long weight lever (21) is provided on each key (3). The lever (21) is installed along the length direction of the key 3, on ... 02/02/06 - 20060021490 - Keyboard device for keyboard instrument A high-quality keyboard device for a keyboard instrument, which can be manufactured by a simplified manufacturing process and at reduced manufacturing costs. A keyframe is formed by a molded piece of a synthetic resin. A plurality of front rail pins and a plurality of balance rail pins are arranged in ... 10/27/05 - 20050235804 - Piano key assembly A piano key mechanism for a pianoforte with improved dynamic performance has weights placed within each keystick in the region between the pivot point of each key and a point midway between the pivot point and the ivory end of the keystick. The arrangement of weights reduces the overall inertia ... 10/27/05 - 20050235803 - Piano hammer A piano hammer comprises an elongate hammer head having a nose portion defining side surfaces and a felt covering extending about the nose portion with tail portions of the felt covering affixed to the side surfaces. The felt covering defines a substantially elliptical peripheral surface from a top region for ... 09/22/05 - 20050204890 - Friction free grand piano action A grand piano action including a jack spring turning inert during the jack escaping from the knuckle friction free. ... ### FreshPatents.com Support - Terms & Conditions |