USPC 416/112

From Inventing aviation
Jump to navigation Jump to search

USPC 416/112 was a patent classification for ancillary rotary movements responding to a cam or trip or stationary guide or a static obstruction in the path of movement.[1] It is relevant to propellers.

Patent class tree:[2]

  • USPC 416/98: Sustained ancillary movement of rotary working parts, e.g. cyclic feathering. Apparatus comprising a working member which rotates about a relatively fixed axis and undergoes at least one different and distinct movement concurrently with the rotary motion.
    • USPC 416/99: Intermounted rotary members. Apparatus comprising a working member supported for rotation about a shaft carried by another rotating working member.
    • USPC 416/100: Continuous rotor oscillation. Apparatus comprising an impeller supported for rotation about an axis and wherein the support structure comprising the rotation axis is caused to partake of a continuous angular oscillating movement across the rotation axis concurrently with the impeller rotatory motion.
    • USPC 416/101: Cyclic radial movement. Apparatus wherein the rotary working member is supported or guided to move radially inward or outward with respect to the fixed rotation axis to assume a particular operative position at a predetermined point in each rotation cycle.
    • USPC 416/102: Responsive to carrier tilt: Apparatus wherein the rotary member is supported for movement relative to the fixes rotation axis to assume a particular operative position at a predetermined point in each rotation cycle in response to tilting or inclining of the carrier, as a unit, relative to the fixed rotation axis of the apparatus.
    • USPC 416/103: Lead-lag type rotor blade movement. Apparatus comprising an impeller of the type having one or more bladed working members which project radially outward from a rotation axis, such as a helicopter rotor, the inner radial end of each working member being pivotally attached to a carrier for movement about an axis parallel to the rotation axis such that the member oscillates forwardly (in the direction of rotation) during a portion of the rotation cycle (lead) and oscillates rearwardly (opposite the direction of rotation) during another portion of the rotation cycle (lag).
      • USPC 416/104: And additional correlated blade movement (e.g., pitch change, etc.) Apparatus wherein the lead-lag movement of the blade effects or is effected by additional movement, e.g., change of pitch, of the same or another blade.
      • USPC 416/105: Positive means effecting lead-lag movement. Apparatus comprising mechanism for moving the blade about the lead-lag axis.
      • USPC 416/106: With movement restraining means (i.e., damping). Apparatus provided with means to limit the extent or reduce the frequency of blade movement about the lead-lag axis.
        • USPC 416/107: Resilient bias or limit stop. Apparatus wherein the movement restraining means is of the resilient biasing or limit stop type.
    • USPC 416/108: By actuator eccentric to rotation axis. Apparatus wherein the concurrent movement is effected by an actuating means which is caused to follow an orbital path of varying radius about the rotation axis of the working member.
      • USPC 416/109: Stationary eccentric guide or track. Apparatus wherein the eccentric actuating means comprises a guide surface or track which is fixedly eccentrically supported relative to the rotatable working member.
    • USPC 416/110: Continuous rotation about plural axes. Apparatus wherein the working member simultaneously and uninterruptedly rotates about two or more different axes.
      • USPC 416/111: Motion about parallel axes. Apparatus wherein the different axes are parallel to one another.
    • USPC 416/112: Responsive to fixed actuator (e.g., cam or trip, etc.) Apparatus wherein the concurrent movement is effected in response to engagement of the rotating working member, or means connected thereto, with a stationary guide means or a static obstruction in the path of movement.
      • USPC 416/113: Axial cam. Apparatus wherein the movement effecting means includes a surface axially inclined with respect to the impeller rotation axis (e.g., a helical cam).
        • USPC 416/114: Selectively adjustable. Apparatus wherein the axially inclined surface is movable at will by a human attendant to various positions to change the concurrent movement of the working member.
          • USPC 416/115: Plural impellers. Apparatus in which the concurrent movements of a plurality of impellers are varied at will.
      • USPC 416/116: Stationary cam track or guide surface. Apparatus wherein the movement effecting means comprises a cam track or guide surface fixedly supported relative to the impeller rotation axis.
    • USPC 416/117: Responsive to gravity or working fluid force. Apparatus wherein the working member concurrent movement occurs in response to the force of gravity or the working fluid acting on the working member or apparatus part directly connected thereto.
      • USPC 416/118: Having manual control or adjustment. Apparatus including means actuated by a human attendant to modify or affect the operation of the apparatus.
      • USPC 416/119: Motion about parallel axes. Apparatus wherein the rotational movement and the concurrent movement are each about axes parallel to one another.

References

  1. Description of sublass USPC 416/112 from US Patent and Trademark Office
  2. Description of sublass USPC 416/98 from US Patent and Trademark Office

This wiki has 12 patents in category "USPC 416/112".

Patents in category USPC 416/112

Enclosing categories USPC 416/98
Subcategories
Keywords Propellers
Start year
End year