Abstract: The invention described herein relates to golf cups and flag sticks. More particularly, the subject matter described herein relates to a system for improved golf flag stick stability and reduced golf cup and/or flag stick ferrule wear. The invention provides a ferrule, golf cup and methods to improve golf flag stick stability and reduce golf cup and/or flag stick ferrule wear. As such, the subject matter described herein relates to providing more consistent golf ball entry due to the stabilization of the flag stick.

Abstract: The subject matter described herein includes a system for improved golf flag stick stability and reduced golf cup and/or flag stick ferrule wear. The system includes a ferrule locatable on an end of a golf flag stick that is inserted in a golf cup. The ferrule has a top portion, a bottom portion, and a sidewall located between the top portion and the bottom portion, where the sidewall tapers inward at an angle selected from the range of 5 degrees to 30 degrees from the top portion to the bottom portion. The system further includes a golf cup having a central aperture for receiving the flag stick. The central aperture is defined by a sidewall that is tapered inward at an angle corresponding to an angle of the ferrule.

Abstract: The subject matter described herein includes a system for improved golf flag stick stability and reduced golf cup and/or flag stick ferrule wear. The system includes a ferrule locatable on an end of a golf flag stick that is inserted in a golf cup. The ferrule has a top portion, a bottom portion, and a sidewall located between the top portion and the bottom portion, where the sidewall tapers inward at an angle selected from the range of 5 degrees to 30 degrees from the top portion to the bottom portion. The system further includes a golf cup having a central aperture for receiving the flag stick. The central aperture is defined by a sidewall that is tapered inward at an angle corresponding to an angle of the ferrule.

Abstract: There is disclosed apparatus for directing particles entrained in a fluid, comprising a chamber having a first wall, including means for generating a sound wave having a frequency v, and a second, opposite wall capable of reflecting the sound wave in which the first and second wall define a conduit for the passage of the fluid, and in which the thickness of the second wall is such that the path length of the standing wave in the second wall is a multiple of about ½ the wavelength ?r of the sound wave therein.

Abstract: A smoke detector or alarm includes on its lower side a cylindrical cup which may be lined with ribbed foam rubber. The inside diameter formed by the liner is designed to mate with the end of a broom or mop handle so that the cup forms a reasonably firm fitting socket for the handle end. A wedge shape triangular adapter plate is mounted on top of the smoke detector and slightly spaced from the top by a round vertical stud. Secured either directly to the ceiling or to the usual smoke detector mounting fasteners is a receiver into which the adapter plate fits. The receiver is in the form of a horizontal wedge shape triangular slot, the bottom of which has a blind slot to accommodate the stud of the adaptor. The bottom of the entrance to the receiver is provided with a lip over which the adapter plate must move. The smoke alarm may accordingly be readily removed and replaced for battery changing, servicing, and testing without the use of a step ladder or step stool.