Patent ID: 6307135
Filing Date: 2001-10-23
Classification: G10D

Abstract:
A support leg structure for a bass drum, comprising:a base having a first inner side including an installation part thereon for attachment to a body of the bass drum;the base having an opposite first outer side, a first rotation surface formed on the first outer side; a plurality of receiving grooves defined in and extending across the first rotation surface at different rotative orientations around an axis of the first rotation surface;a shaft extending up from the first outer surface of the base at the axis;an inside leg holding member having a second inner surface facing toward the first rotation surface of the base and having an opposite second outer surface, a hole through the inside member through which the shaft passes;a second rotation surface on the second inner surface of the inside member for cooperating with the first rotation surface on the base enabling the inside member to be rotated with respect to the base with the shaft as the center of rotation;a rib on the second inner surface of the inside member, the rib being shaped to cooperate with a selected one of the receiving grooves in the first rotation surface of the base, the selected groove being dependent upon the rotation orientation of the inside member with respect to the base;the inside member having a tightening seat projecting outwardly and formed around the shaft hole of the inside member;an inside leg holding groove defined in and extending across the second outer surface of the inside member for receiving a leg extending lengthwise through the leg holding groove;an outside leg holding member outside of the inside leg holding member, the outside leg holding member having a third inner surface opposed to the second outer surface of the inside member, the outside member having an opening through which the tightening seat of the inside member projects outward;the outside member including an outside leg holding groove defined in and extending across the third inner surface, the outside leg holding groove being oriented and positioned to overlie the inside leg holding groove on the second outer surface of the inside member to hold a leg in the overlying inside and outside leg holding grooves;a clamping arrangement for clamping the inside and outside leg holding members together and over a leg held in the overlying inside and outside grooves for clamping a leg fixed in its lengthwise position with respect to the leg holding members;a tightening arrangement on the shaft and extending between the base and the tightening seat on the inside member, including a tightening element being tightenable onto the shaft to tighten the base and the inside holding member together to retain the rotative orientation of the inside holding member with respect to the base.