Tonearm pivot

A method of constructing a phonograph record player, comprising:

• attaching a suspension means to a base plate;
• arranging the suspension means to suspend an elongate member in an approximately horizontal position, such that the weight of the elongate member is substantially supported by the suspension means from a point which is at a greater height than the height at which the suspension means is connected to the elongate member;
• either:
• attaching a protrusion in connection with the base plate and attaching a contact surface in connection with the elongate member;
• or
• attaching the contact surface in connection with the base plate and attaching the protrusion in connection with the elongate member;
• arranging the protrusion in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force, wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member.

A method of modifying a phonograph record player, the phonograph record player comprising a base plate and an elongate member,

• the method comprising:
• attaching a suspension means to the base plate;
• arranging the suspension means to suspend the elongate member in an approximately horizontal position, such that the weight of the elongate member is substantially supported by the suspension means from a point which is at a greater height than the height at which the suspension means is connected to the elongate member;
• either:
• attaching a protrusion in connection with the base plate and attaching a contact surface in connection with the elongate member;
• or
• attaching the contact surface in connection with the base plate and attaching the protrusion in connection with the elongate member;
• arranging the protrusion in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force, wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member.

A tonearm comprising:

• an elongate member;
• a suspension means suspending the elongate member in an approximately horizontal position, wherein the weight of the elongate member is substantially supported by the suspension means;
• a protrusion, wherein the protrusion defines a protrusion axis, about which the protrusion is approximately rotationally symmetric, wherein the protrusion axis is substantially parallel to the length axis of the elongate member;
• and
• a contact surface wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member,
• wherein the protrusion is arranged in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force.

A tonearm comprising:

• an elongate member;
• a suspension means suspending the elongate member in an approximately horizontal position, wherein the weight of the elongate member is substantially supported by the suspension means;
• a protrusion;
• and
• a contact surface wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member and wherein the contact surface is a substantially flat plate,
• wherein the protrusion is arranged in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force.

A tonearm comprising:

• an elongate member;
• a suspension means suspending the elongate member in an approximately horizontal position, wherein the weight of the elongate member is substantially supported by the suspension means;
• a protrusion;
• and
• a contact surface wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member,
• wherein the protrusion is arranged in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force;
• and
• wherein the protrusion and the contact surface are attracted to each other by a magnetic force.

A tonearm comprising:

• an elongate member;
• a suspension means suspending the elongate member in an approximately horizontal position, wherein the weight of the elongate member is substantially supported by the suspension means;
• a protrusion;
• and
• a contact surface wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member,
• a rigid connection member, wherein the rigid connection member is attached to the elongate member, and wherein the suspension means comprises at least one suspension member, connected to the rigid connection member at a first connection point;
• and
• a support member, wherein the support member is a substantially vertical elongate member and wherein the at least one suspension member is connected to the support member;
• wherein the protrusion is arranged in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force;
• and
• wherein the at least one suspension member is connected to the support member at a point below the elongate member.

A tonearm comprising:

• an elongate member;
• a suspension means suspending the elongate member in an approximately horizontal position, wherein the weight of the elongate member is substantially supported by the suspension means;
• a protrusion;
• and
• a contact surface wherein the contact surface is arranged substantially perpendicular to the length axis of the elongate member,
• a rigid connection member, wherein the rigid connection member is attached to the elongate member, and wherein the suspension means comprises at least one suspension member, connected to the rigid connection member at a first connection point;
• and
• a support member, wherein the at least one suspension member is connected to the support member;
• wherein the protrusion is arranged in opposing contact with the contact surface at a contact point, such that action of a drag force substantially parallel to the length of the elongate member urges the contact surface and the protrusion into opposing contact, thereby producing a contact force which resists the drag force;
• and
• wherein the first connection point is offset along an axis parallel to the length of the elongate member, relative to a suspension point at which the at least one suspension member is connected to the support member, so as to urge the protrusion and the contact surface into opposing contact.