Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
An attachment device including a bearing housing (10) designed for mounting on a helmet, and an arm (38) which projects through an opening (40) in the housing, is supported by means of an arm support (42) therein, and serves to carry, at the end opposite the housing, an earmuff to be moved manually with a rocking motion between a stationary rest position and a position wherein the earmuff exerts a given desired pressure around the wearer's ear, characterized in that a separate spring component (44) at two opposite sides thereof is pivotally mounted at its periphery partly in a spring support (48), which is adjustably mounted in the housing and which remains stationary during the rocking motion of the arm, and partly in the inner end (52) of the arm (38) that is located inside the housing, said spring being prestressed or biased between said spring support and said inner end, thus exerting upon said inner end of the arm a force directed away from the spring support (48) for the purpose of stabilizing the arm in its two positions.
Claim 2
Dependent Claim
180 words
An attachment device including a bearing housing (10) designed for mounting on a helmet, and an arm (38) which projects through an opening (40) in the housing, is supported by means of an arm support (42) therein, and serves to carry, at the end opposite the housing, an earmuff to be moved manually with a rocking motion between a stationary rest position and a position wherein the earmuff exerts a given desired pressure around the wearer's ear, characterized in that a separate spring component (44) at two opposite sides thereof is pivotally mounted at its periphery partly in a spring support (48), which is adjustably mounted in the housing and which remains stationary during the rocking motion of the arm, and partly in the inner end (52) of the arm (38) that is located inside the housing, said spring being prestressed or biased between said spring support and said inner end, thus exerting upon said inner end of the arm a force directed away from the spring support (48) for the purpose of stabilizing the arm in its two positions.
Claim 3
Dependent Claim
17 words
An attachment device as claimed in claim 1, characterized in that the spring element (44) is annular.
Claim 4
Dependent Claim
28 words
A device as claimed in claim 1, characterized in that the arm support comprises a part (42) of the surrounding edge of said opening (40) in the housing.
Claim 5
Dependent Claim
42 words
A device as claimed in claim 3, characterized in that the edge of said opening constituting the arm support has a projection (42) facing the inside of the bearing housing and arranged to engage with a matching groove in the arm (38).
Claim 6
Dependent Claim
62 words
A device as claimed in claim 1, characterized in that the spring support comprises a rocker (48) and that the position of the part (56) of the rocker in which the spring component (44) is supported is adjustable against an adjusting means with respect to the inner end (52) of the arm to permit alteration of the prestressing of the spring component.
Claim 7
Dependent Claim
74 words
A device as claimed in claim 5, characterized in that the adjustment means comprises a cover (16) having an annular collar (30) of thickness varying along the extension thereof and bearing at one side on the inside of the ring flange (32) of a base (12), which is rotatable with respect to the said adjusting cover, and at its opposite side against said part of the rocker in which the spring component is supported.
Claim 8
Dependent Claim
91 words
A device as claimed in claim 1, characterized in that the attachment device also comprises an adapter (58) designed to be screwed directly to the helmet, and that the bearing housing (10) and adapter (58) are united by means of a hub (22) projecting from the housing and designed to be retained by the grasping action of matching, resilient ears (68) formed in the adapter, one section of the circumference of the base (12) of the housing being in contact with a matching guiding flange (72) which projects from the adapter.
Claim 9
Dependent Claim
45 words
A device as claimed in claim 7, characterized in that the hub (22) projects from a plate (14) which is rotatable with respect to the base (12) and is rigidly united to an adjusting cover (16) on the housing by a central self-tapping screw (18).
Claim 10
Dependent Claim
26 words
A device as claimed in claim 8, characterized in that stops are provided on the base (12) to limit the rocking motion of the arm (38).