Abstract: An antenna for use in a distributed antenna system includes: (a) a feeding circuit on a first side of a first dielectric defining a planar edge perpendicular to the first side, a coplanar waveguide comprising a signal feed and a signal return coplanar with and interfittingly apart from the signal feed; (b) a radiator circuit on a second side of a second dielectric, a monopole radiator and a radiator return being copolanar and spaced apart from each other, the first dielectric capacitively coupling the signal feed to the monopole radiator; and (c) an edge connection along the planar edge for electrically connecting the signal return to the radiator return. A cover encloses the feeding circuit, including its impedance matching, in a water-resistant enclosure. The antenna ceiling-mounts indoors, is coated with a fire-resistant coating, and is operable at VHF (132-174 MHz), UHF (350-520 MHz), and 698-960 MHz.

Abstract: An antenna for use in a distributed antenna system is provided. The antenna includes: (a) a feeding circuit on a first side of a first dielectric defining an edge perpendicular to the first side, a coplanar waveguide comprising a signal feed and a signal return coplanar with and interfittedly apart from the signal feed; (b) a radiator circuit on a second side of a second dielectric, a monopole radiator and a radiator return being copolanar and spaced apart from each other, the first dielectric capacitively coupling the signal feed to the monopole radiator; and (c) an edge connection along the edge for electrically connecting the signal return to the radiator return. A cover encloses the feeding circuit, including its impedance matching, in a water-resistant enclosure. The antenna ceiling-mounts indoors, is coated with a fire-resistant coating, and is operable at VHF (132-174 MHz), UHF (350-520 MHz), and 698-960 MHz.

Abstract: The present invention pertains to a brewing filter apparatus capable of preparing foam, froth, or crema, particularly for coffee beverages, under low pressure. The apparatus can operate at pressures below 15 bar and as low as 1-3 bar. The apparatus comprises a mesh cover, coarse filter, fine filter, large O-ring, coffee container, small O-ring, and foam maker having two opposing holes. The holes have a diameter in the range of 0.3 to 1 mm. The crema is created by the turbulent contacting of two opposing jets of coffee, which enter the foam maker through the two opposing holes. To further increase agitation and the surface area for contact, a stainless steel wire mesh may be situated in the center of the foam maker directly in the path of and in between the opposing jets of coffee to facilitate the formation of more crema.

Abstract: The present invention pertains to a brewing filter apparatus capable of preparing foam, froth, or crema, particularly for coffee beverages, under low pressure. The apparatus can operate at pressures below 15 bar and as low as 1-3 bar. The apparatus comprises a mesh cover, coarse filter, fine filter, large O-ring, coffee container, small o-ring, and foam maker having two opposing holes. The holes have a diameter in the range of 0.3 to 1 mm. The crema is created by the turbulent contacting of two opposing jets of coffee, which enter the foam maker through the two opposing holes. To further increase agitation and the surface area for contact, a stainless steel wire mesh may be situated in the center of the foam maker directly in the path of and in between the opposing jets of coffee to facilitate the formation of more crema.

Abstract: The present invention pertains to a brewing filter apparatus capable of preparing foam, froth, or crema, particularly for coffee beverages, under low pressure. The apparatus can operate at pressures below 15 bar and as low as 1-3 bar. The apparatus comprises a filter, coffee container, O-ring, and foam maker having two opposing holes. The holes have a diameter in the range of 0.3 to 1 mm. The crema is created by the turbulent contacting of two opposing jets of coffee. To further increase agitation and the surface area for contact, a stainless steel wire mesh may be situated in the center of the foam maker directly in the path of and between the opposing jets of coffee to facilitate the formation of more crema.

Abstract: This invention provides a simpler to use, brewing filter apparatus designed for measuring the required amount of coffee grounds or beverage mixes adapted to be mounted on a beverage- or coffee-making machine for brewing coffee grounds or beverages. Particularly, this invention relates to a filter apparatus for brewing coffee or beverage mixes, including but not limited to tea, chocolate or other flavored beverages mixes, and for making foam or froth in the brewed beverage or coffee.

Abstract: This invention provides a locking device sustaining high pressure in a coffee maker which comprises a brew head assembly which comprises: a slide assembly, a sealing assembly, and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars. Additionally, this invention provides a method for one-hand operation of the locking device of a coffee maker comprising steps of: a) Pushing the lever inward, causing the push rod to push the slider inward, engaging the cams and corresponding recesses, or alternatively, the slider will move inward, turning the rotatable locking hooks into their corresponding recesses so the brew head is locked; b) Pulling the lever outward, causing the push rod that is assembled on the slider to pull the slider outward so that the brew head is released; and c) after releasing the lock, the lift platform will pop up, assisted by the lift platform spring and the lid mount will roll-back, assisted by the hinge spring.

Abstract: This invention provides a locking device sustaining high pressure in a coffee maker which comprises a brew head assembly which comprises: a slide assembly, a sealing assembly and a pop-up and roll-back assembly, operatively linked to sustain pressure up to four (4) bars. Furthermore, this invention provides a method for one-hand operation on the locking of a coffee maker comprising steps of: a) Using one hand to put the lever forward to release the lock which is controlled by two parts, the slider and the three mounts on the brew base wherein the back-and-forth movement of the slider will produce the action of locking and releasing; b) Moving the lever forward, produce the push rod that is assembled on the slider will push the slider forward so the brew head is released; c) Putting back the lever, the push rod will put back the slider so the brew head is locked; and d) after releasing the lock, the lift platform will pop up by the lift platform spring and the lid mount roll up by the hinge spring.