Abrégé

A mobile sound amplifier (1; 10) that has a funnel-like sound duct formed by multiple segments (2a-2i; 20a-20i) and can be taken from a packed-up transport position to an expanded operating position along a longitudinal axis (A), wherein a sound transducer (14) is attachable or attached to a first end (4), which has a smaller cross-sectional area than a second, open end (3), such that the sound transducer (14) delivers the sound at the first end into the sound duct and the sound is radiated, after reflection and passive amplification, at the extended open second end.

Classes IPC  ?

• G10K 11/08 - Dispositifs amplificateurs non électriques du son, p. ex. mégaphones non électriques
• H04R 1/30 - Combinaisons de transducteurs avec des pavillons, p. ex. avec des moyens d'équilibrage mécanique

Produits et services

Cases for mobile electronic devices; protective sleeves for mobile electronic devices; audio devices and radio receivers; wireless transmitters and receivers; USB hardware; pouches for transporting mobile electronic devices and accessories.

Produits et services

Shells for mobile electronic devices, namely mobile electronic scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking [supervision], life-saving and teaching apparatus and instruments, mobile electronic apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, mobile electronic apparatus for recording, transmission or reproduction of sound or images, mobile electronic communications equipment, mobile electronic data processing equipment mobile electronic computers; Protective covers for mobile electronic devices, namely mobile electronic scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking [supervision], life-saving and teaching apparatus and instruments, mobile electronic apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, mobile electronic apparatus for recording, transmission or reproduction of sound or images, mobile electronic communications equipment, mobile electronic data processing equipment mobile electronic computers; Audio devices and radio receivers; Wireless transmitters and receivers; Universal serial bus (USB) hardware; Pouches/bags designed for electronic devices, namely mobile electronic scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking [supervision], life-saving and teaching apparatus and instruments, mobile electronic apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, mobile electronic apparatus for recording, transmission or reproduction of sound or images, mobile electronic communications equipment, mobile electronic data processing equipment mobile electronic computers.

Produits et services

Cases for mobile electronic devices; Protective sleeves for mobile electronic devices; Wireless transmitters and receivers; USB hardware; Pouches for transporting mobile electronic devices and accessories.

Produits et services

Cases for mobile electronic devices; Protective sleeves for mobile electronic devices; Audio devices and radio receivers; Wireless transmitters and receivers; USB hardware; Pouches for transporting mobile electronic devices and accessories.

Produits et services

Stationery, in particular desk organisers, stationery boxes, office requisites, holders for desk accessories. Furniture, in particular boxes of plastic, racks, slanted shelves, computer tables. Cosmetic and toilet utensils and bathroom articles; household containers.

Produits et services

Stationery, in particular desk organisers, stationery boxes, office requisites, holders for desk accessories. Furniture, in particular boxes of plastic, racks, slanted shelves, computer tables. Cosmetic and toilet utensils and bathroom articles; household containers.

Produits et services

Stationery, in particular desk organisers, stationery boxes, office requisites, holders for desk accessories. Furniture, In particular boxes of plastic, Racks, Slanted shelves, Computer tables. Cosmetic and toilet utensils and bathroom articles; Household containers.

Produits et services

Stationery, in particular desk organisers, stationery boxes, office requisites, holders for desk accessories. Furniture, In particular boxes of plastic, Racks, Slanted shelves, Computer tables. Cosmetic and toilet utensils and bathroom articles; Household containers.

Produits et services

Stationery, in particular desk organisers, stationery boxes, office requisites, holders for desk accessories. Furniture, In particular boxes of plastic, Racks, Slanted shelves, Computer tables. Cosmetic and toilet utensils and bathroom articles; Household containers.