Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

2740 results about "Counter rotation" patented technology

Excavation bit for a drilling apparatus

The invention provides an excavation bit, which is constructed from either a single or double carrier. If two carriers are present the carriers are contra-rotating. By the off setting of the axes of rotation of single or dual carriers from a longitudinal axis of the bit, and by driving to carriers to rotate, a ground engaging thrust is produced, as well as the rotation of the excavation bit in the ground as a consequence of the rotation of the carriers, and not vice versa as is the case with prior art. By the invention, there can result sufficient thrust on the bit, by the rotation of the carriers, so that the need to apply thrust down the bore via the drill rod is reduced or eliminated. As a result of the invention the number and or size of the ground engaging tools are not a function of the bore diameter to be drilled. Thus as the excavation bit is scaled up for larger diameter bores more ground engaging tools and or an increase in their size is not required. By the invention, thrust applied (either via the drill rod or from the rotation of the carriers) is thought to be, through a quasi lever system, multiplied at some of the ground engaging tools in the radial direction. That is the total thrust in the longitudinal axis direction (whether externally applied or resultant from the contra-rotation of the carriers), is multiplied so that the outward forces exerted (by the cutters onto the rock surface in the region approaching perpendicular to the longitudinal axis of the bore) is thought to be significantly higher than the magnitude of the total thrust.
Owner:MOLLOY ANTHONY

Labor reduction type agricultural chemical spraying system having automatic hose winding and unwinding apparatus

The present invention relates to a labor reduction type agricultural chemical spraying system having an automatic hose winding and unwinding apparatus by which one worker is capable of spraying agricultural chemicals in such a manner that a hose is automatically wound and unwound from a reel based on a remotely controlled motor. The labor reduction type agricultural chemical spraying system having an automatic hose winding and unwinding apparatus comprises a frame in which a motored sprayer connected with an engine is installed; a reel rotatably installed in the frame wherein a hose is wound onto the reel; a first driving motor driven in both directions for rotating the reel in normal and reverse directions in accordance with a remote control signal; a rotary shaft rotating by a driving force from the rotary shaft of the reel and reciprocating a movable piece engaged to an upper side in the left and right directions with respect to the reel; a second driving motor installed on the movable piece in cooperation with the first driving motor and driven in the normal and reverse directions in accordance with a remote control signal; and a pair of rollers that are installed in the movable piece and are rotatably connected with the second driving motor and tension an outer surface of the hose, and unwind the hose from the reel.
Owner:HYUPWOO TRADING

System and method converting the polarization state of an optical beam into an inhomogeneously polarized state

A system for converting the polarization state of an optical beam which propagates along a path from an initial polarization state into an inhomogeneous polarization state in accordance with embodiments of the present invention includes a first anisotropic material positioned adjacent to the first isotropic material in a substantially transverse manner relative to the path of the optical beam, wherein the first anisotropic material has a first alignment axis that produces one of a radially, azimuthally, and counter-rotationally polarized optical beam when substantially aligned with respect to a polarization axis of the optical beam. The system may further include a second isotropic material and a second anisotropic material positioned adjacent to the second isotropic material in a substantially transverse manner relative to the path of the optical beam, wherein the second isotropic material and second anisotropic material are positioned downstream of the first isotropic material and first anisotropic material along the path of the optical beam, and wherein the second anisotropic material has a second alignment axis that produces one of a radially, azimuthally, and counter-rotationally polarized optical beam when substantially aligned with respect to the polarization axis of the optical beam. In addition, the present invention relates to an optical beam having an inhomogeneous polarization state in which the polarization rotates in a continuous and counterclockwise manner while traversing a circular path around the beam axis in a clockwise direction.
Owner:UNIVERSITY OF ROCHESTER

Rotating shaft structure with automatic locking mechanism

The present invention discloses a rotating shaft structure with automatic locking mechanism, characterized in which a shaft extending axially from an axial member passes through, in sequence, the core hole of the upright frame plane of the main frame, a friction disc, a disc-like connecting part connected with the frame plane, a cam member comprising a fastening part and a sliding part, at least an elastic body, and a connecting segment on the free end of the shaft connected with a end enclosure so as to form axial pressure to constrain the elements described above. The shaft and the main frame are provided with a linking portion and a connecting portion, respectively. The outer and inner edges of the adjoining planes between the fastening part and the sliding part are provided with at least a wedge block and at least a wedge slot alternately so as to connect the fastening part and the sliding part together. Consequently, when the axial member rotates, the inclined plane of the wedge slot of the sliding part moves upward along the inclined plane of the wedge block and thus axially presses the elastic body so as to prompt the contact plane of the sliding part to rotate along the wedge blocks of the fastening part. When the axial member rotates reversely, the wedge slots of the sliding part move to the wedge blocks of the fastening part and, under the extending action of the elastic body, the wedge slots are engaged into the wedge blocks so as to form an automatic locking of butting joint.
Owner:HO CHI JUNG +2
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products