Ear-pads and assembly procedure

• US 4,133,053 A
• Filed: 09/28/1977
• Issued: 01/09/1979
• Est. Priority Date: 09/30/1976
• Status: Expired due to Term

• Current Assignee: Saint Gobain Isover AB (Compagnie de Saint-Gobain SA)
• Original Assignee: Saint Gobain Isover AB (Compagnie de Saint-Gobain SA)
• Inventors: Lundin, Tord R.
• Primary Examiner(s): Nerbun, Peter
• Application Number:
  US05/837,084
• Time in Patent Office: 468 Days
• Field of Search: 2/209, 2/423, 2/6, 179/156 R, 179/182 R
• US Class Current: 2/209
• CPC Class Codes: H04R 1/1008 Earpieces of the supra-aural or circum-aural type
• CPC Class Codes: H04R 1/1058 Manufacture or assembly
• CPC Class Codes: H04R 1/1066 Constructional aspects of the interconnection between earpiece and earpiece support earpiece support for monophonic headphones H04R1/105; earpiece support for stereophonic headphones H04R5/0335

Abstract

The casings for two ear-pads are adjustably mounted on opposite ends of an arcuate headband by means of a pair of rivet-like elements, each of which extends through an elongate slot in one end of the headband, and a central opening in the associated ear-pad casing. Each rivet-like element has an enlarged-diameter cylindrical head on its inner end and an enlarged, rectangular head on its outer end which is slidable in a correspondingly shaped recess in the headband to allow adjustment of each casing in the longitudinal direction of its associated slot. A plurality of flexible, washer-like supporting members are pressed over the inner end of each element resiliently to engage opposite sides of a casing around its central opening frictionally to resist movement of each casing relative to the headband.

Claims

1. A method of assembling a casing for ear-pads on one end of a flexible headband provided with slots, and making use of an element similar to a rivet, comprising

providing a rivet-like element having widened ends of greater diameter than the breadth of the slot in said headband, and

forcing one end of this element which is in the form of a head, successively through said slot in the headband by motion of the element relative to the headband, through the bores in one or more washer-like supporting elements, so that the elements are brought into position around the shaft of the rivet-like element on the inside of the headband, through a hole provided in the casing, and through one or more additional washer-like supporting elements, the diameter of whose holes is less than that of the head, and which are positioned between the inner wall of the casing and the underside of the head, thereby enabling the casing to be secured between the first-named and said additional supporting elements.

2. Ear-pads, comprising

a flexible headband having a pair of elongate slots in opposite ends, respectively, thereof,

two casings,

a pair of rivet-like elements extending through said slots and central openings in said casings, each of said elements having integral inner and outer ends, respectively, which are wider than said slots, and at least one of which ends of each element can be forced through the associated slot in said headband by snap-action while said headband is elastically distorted, and

a plurality of washer-like supporting members rotatably supporting the casings on said elements at the inside surfaces of said headband,

said headband being attached firmly around said elements between the outer ends thereof and said supporting members that are positioned between the headband and said casings.

3. Ear-pads as described in claim 2, wherein said supporting members are compressible, and are made preferably of rubber or plastic, and the inner end of each of said elements is in the form of a bulbous head, the lower part of which is provided with an appreciably straight edge.

4. Ear-pads as described in claim 2, wherein said outer end of each of said elements is in the form of a grip which can be guided along the appropriate slot in said headband for vertical adjustment of the associated casing.

5. Ear-pads as described in claim 2, wherein a circumferential collar is formed on each element between its widened ends.