Telephone handset construction
First Claim
1. A telephone handset comprising:
- a lower housing member having a first cylindrically-shaped cavity of uniform diameter throughout, open at one end for receiving a transducer and having a pattern of holes at the other end to enable the passage of audible sounds, said cavity including smooth, vertical walls;
a receiver transducer, cylindrically-shaped and adapted to convert electrical signals into audible sounds, the receiver transducer including at least one hole in a front surface thereof to enable the passage of said audible sounds;
a first flexible tubular gasket surrounding the receiver transducer around its circumference, the combined first tubular gasket and receiver transducer having an outer diameter sized to;
(i) fit into the first cylindrically-shaped cavity of the lower housing member, (ii) be frictionally held therein, (iii) form a seal between the receiver and said first cavity; and
an upper housing member adapted to mate with the lower housing member to form a handset housing.
1 Assignment
0 Petitions
Accused Products
Abstract
A telephone handset comprises elongated complementary upper and lower housing members that mate at their perimeters to form a hollow handset housing. The lower housing member includes a pair of spaced apart transducer receiving cavities, each being shaped to receive a cylindrical transducer surrounded by a flexible tubular gasket and form an acoustic seal therewith. Each gasket includes flanges around its circumference that project radially outward and in a direction opposite to the direction of insertion of the transducer/gasket assembly into its associated cavity. Such construction provides adequate mechanical retention between the transducer and the lower housing member and avoids the need for additional retaining hardware. The upper housing is joined to the lower housing using one or more pairs of side-mounted, interlocking hooks and latches. The upper housing further includes ribs, molded therein and positioned to maintain the transducers in place when it is joined with the lower housing.
78 Citations
17 Claims
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1. A telephone handset comprising:
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a lower housing member having a first cylindrically-shaped cavity of uniform diameter throughout, open at one end for receiving a transducer and having a pattern of holes at the other end to enable the passage of audible sounds, said cavity including smooth, vertical walls; a receiver transducer, cylindrically-shaped and adapted to convert electrical signals into audible sounds, the receiver transducer including at least one hole in a front surface thereof to enable the passage of said audible sounds; a first flexible tubular gasket surrounding the receiver transducer around its circumference, the combined first tubular gasket and receiver transducer having an outer diameter sized to;
(i) fit into the first cylindrically-shaped cavity of the lower housing member, (ii) be frictionally held therein, (iii) form a seal between the receiver and said first cavity; andan upper housing member adapted to mate with the lower housing member to form a handset housing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A telephone handset comprising elongated complementary upper and lower housing members that mate at their perimeters to form a hollow handset housing, the handset housing containing a transmitter for converting audible sounds into electrical signals, a receiver for converting electrical signals into audible sounds, and means for interconnecting electrical signals between the telephone handset and associated telephone equipment
CHARACTERIZED BY: -
a pair of spaced-apart cylindrically-shaped cavities, the cavities having smooth vertical walls such that throughout each cavity a uniform diameter is maintained and said cavities being molded into the lower housing member, for receiving the transmitter and receiver; a first flexible tubular gasket adapted to cover the receiver around its outside circumference and a portion of a front surface thereof; and a second flexible tubular gasket adapted to cover the transmitter around its outside circumference, said first and second flexible tubular gaskets frictionally cooperating with the cavities to hold the receiver and transmitter in place. - View Dependent Claims (13)
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14. In a telephone handset
a lower housing, molded from a plastic material and shaped at each end to include first and second circular recesses having perforated bases and side walls of uniform diameter throughout extending smoothly upward from each base, the first circular recess containing a receiver assembly and the second circular recess containing a transmitter assembly the transmitter assembly comprising: -
a microphone having a front face positioned towards the base of the second circular recess and a second resilient tubular gasket surrounding the outside of the microphone and a portion of its front face for frictionally holding the microphone within the second circular recess, said second gasket including at least one outwardly projecting flange that extends in a continuous path around the outside of the second gasket and is oriented in a direction away from the front face of the microphone to thereby allow relatively easy entrance of the microphone into the second circular recess but relatively difficult removal therefrom the receiver assembly comprising; a loudspeaker having a front face positioned towards the base of the first circular recess and a first resilient tubular gasket surrounding the outside of the loudspeaker and a portion of its front face for frictionally holding the receiver within the first circular recess, said first gasket including at least one outwardly projecting flange that extends in a continuous path around the outside of the first gasket and is oriented in a direction away from the front face of the loudspeaker to thereby allow relatively easy entrance of the loudspeaker into the first circular recess but relatively difficult removal therefrom. - View Dependent Claims (15, 16, 17)
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Specification