The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 1987
Filed:
Feb. 18, 1986
Albert Eggert, Berlin, DE;
Jurgen Montag, Berlin, DE;
Manfred Muller, Berlin, DE;
Peter Wiener, Berlin, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The housing is essentially spherically shaped, formed with a flattened end wall (14), through which a sound receiving opening (42) extends in axial direction, located eccentrically with respect to the spherical housing. A volume control button (50) covers the sound receiving opening, the volume control button being maintained by a small distance (h) spaced from the spherical end wall to permit entry of sound to the sound receiving opening, while preventing masking of the sound receiving opening by the finger of a user, and free entry of contamination thereto. Preferably, the button is connected to the volume control element by an inwardly extending collar (52) which snaps over an adjustment rim (35) on a volume control positioned axially centrally on a printed circuit board (31) secured within the housing and passing through a central opening (47) formed therein. The flat end wall (14) can be formed with additional openings to permit access to adjustment screwdriver heads (36) of trimmer resistors, the additional openings likewise being masked by the volume control button for protection and to prevent contamination.