Abstract: A wheel assembly having a braking mechanism that is actuated by centrifugal force. The braking mechanism includes a rotating hub insert having a first pocket, a thread guard having a second pocket fixed relative to the frame of the wheel assembly, and an internal ball between the rotating hub insert and the thread guard. The internal ball can be flung by centrifugal force from the first rotating pocket to the second fixed pocket to cause a braking force from contact of the ball in the second pocket with the rotating hub insert. The amount of centrifugal force required to fling the ball into the second pocket can be calculated for rotation of the wheel greater than a certain predetermined speed.

Abstract: A wheel assembly which includes a bearing assembly housed in an electrically conductive outer shell. A hollow sleeve of synthetic resin material impregnated with electrically conductive material is operatively electrically coupled to a peripheral surface of the electrically conductive outer shell. The hollow sleeve has at least one radially outwardly extending stem integral therewith. A synthetic resin material hub and tread is configured to envelop the metallic outer shell, the hollow sleeve and the stem. A distal end of the stem terminates either flush with or projects radially outwardly of a peripheral surface of the tread to contact a surface supporting the wheel construction with each revolution of the wheel construction and to effectively facilitate a discharge of static electricity through the hollow sleeve and the stem in response thereto.

Abstract: The present invention relates to a method of improving the hatchability of eggs and a composition used for the method. The present invention provides the method comprising administrating an amino acid solution into hatching eggs and a composition for improving the hatchability of eggs which contains an amino acid as an effective ingredient.

Abstract: A method of treating or preventing pulmonary hypertension syndrome in avians, generally including administering a drinking water containing L-arginine compound to the avian.

Abstract: A wheel assembly includes a tubular spindle having a central portion of reduced diameter defining at each axial end of the central portion an axially facing locking surface. Two annular bearing members encircle and are supported on the spindle on opposite sides of the reduced diameter central portion, each bearing member having at least one resilient locking member which projects axially toward the other bearing member and which has a shoulder engageable with a respective shoulder on the spindle. Each bearing member has at its axially outer end a radial projection which carries an axially inwardly facing annular surface. A wheel has a central axial opening, the spindle and bearing members being disposed within the opening and the radially outer surfaces of the bearing members engaging the central axial opening through the wheel. The wheel has at each end of the central opening an axially outwardly facing surface which engages the surface on the radial projection of a respective bearing member.

Abstract: A friction braking mechanism for a merchandise cart or the like for holding objects includes a frame for supporting the container, and a plurality of wheels rotatably supported on the frame. The wheels are supported for rotation relative to the frame about a rotational axis. At least one of the wheels has a thread guard associated therewith and secured against rotation therewith. An arrangement which is continuously operable during rotation of the wheel coacts between the wheel and the thread guard for frictionally retarding rotation of the wheel. An adjustment arrangement is also provided for adjusting the amount by which the rotation of the wheel is frictionally retarded.