US3883101A — Vibration damping means

Claim 1

Independent Claim 241 words

Vibration damping means which comprises: a first rigid member (1) adapted to be attached to one of two members to be damped; a second rigid member (2) coaxial with the first rigid member and having the shape of a cylindrical cup, with a peripheral wall portion (5) at its open end which is radially spaced from a corresponding wall portion (6) of the rigid member (1); said second rigid member having a projection (8) which extends upward from its bottom (7) in the form of an inner cup coaxial with the cylindrical wall (3) of the rigid member to define a substantially annular intermediate chamber (13) therebetween, said upward projection (8) having itself an inner bottom (9); a pad of knitted metallic wire (17) between said first rigid member (1) and said inner bottom (9) which acts in the axial direction; a first elastomeric pad (10) positioned between the radially spaced zones (5), (6) of the two rigid members (1), (2) to act in shear; a helical spring (12) positioned in the annular space (13) and bearing on the first rigid member (11) and on the annular bottom (9) of the second rigid member (2); a second annular elastomeric pad (10) positioned between the bottom (7) of the second rigid member (2) and the end of the spring (12); and a third elastomeric pad (15) between the inner bottom (9) of the projection (8) and the knitted metallic wire pad (17).

Claim 2

Dependent Claim 241 words

Vibration damping means which comprises: a first rigid member (1) adapted to be attached to one of two members to be damped; a second rigid member (2) coaxial with the first rigid member and having the shape of a cylindrical cup, with a peripheral wall portion (5) at its open end which is radially spaced from a corresponding wall portion (6) of the rigid member (1); said second rigid member having a projection (8) which extends upward from its bottom (7) in the form of an inner cup coaxial with the cylindrical wall (3) of the rigid member to define a substantially annular intermediate chamber (13) therebetween, said upward projection (8) having itself an inner bottom (9); a pad of knitted metallic wire (17) between said first rigid member (1) and said inner bottom (9) which acts in the axial direction; a first elastomeric pad (10) positioned between the radially spaced zones (5), (6) of the two rigid members (1), (2) to act in shear; a helical spring (12) positioned in the annular space (13) and bearing on the first rigid member (11) and on the annular bottom (9) of the second rigid member (2); a second annular elastomeric pad (10) positioned between the bottom (7) of the second rigid member (2) and the end of the spring (12); and a third elastomeric pad (15) between the inner bottom (9) of the projection (8) and the knitted metallic wire pad (17).

Claim 3

Dependent Claim 21 words

Vibration damping means as claimed in claim 1 in which the first rigid member is fixed to a mounting nut (21).

Claim 4

Dependent Claim 35 words

Vibration damping means according to claim 1 in which the walls (3), (8), (10) defining the annular chamber (13) are fluid-tight and said chamber is completely filled by a material having the consistency of grease.

Claim 5

Dependent Claim 20 words

Vibration damping means as claimed in claim 1 in which the annular space (13) is in communication with the atmosphere.

Claim 6

Dependent Claim 39 words

Vibration damping means as claimed in claim 1 in which the second rigid member (2) is cup-shaped and has an upper end of increased diameter connected to the remainder of said second rigid member by a supporting shoulder (4).

Claim 7

Dependent Claim 112 words

Vibration damping means comprising: an outer cup (2); an inner cup (1) having its open end projecting into the oPen end of the outer cup; a projection (8), (9), extending from the bottom of the outer cup toward the inner cup and defining an annular chamber (13) between said projection and the outer wall of said outer cup; coil spring means (12) in said chamber biassing said cups apart; wire mesh damping means (17) between said projection and inner cup; and elastomeric damping means acting in shear positioned between the inner surface of the open end of said outer cup and the outer surface of the open end of the inner cup.

Claim 8

Dependent Claim 112 words

Vibration damping means comprising: an outer cup (2); an inner cup (1) having its open end projecting into the oPen end of the outer cup; a projection (8), (9), extending from the bottom of the outer cup toward the inner cup and defining an annular chamber (13) between said projection and the outer wall of said outer cup; coil spring means (12) in said chamber biassing said cups apart; wire mesh damping means (17) between said projection and inner cup; and elastomeric damping means acting in shear positioned between the inner surface of the open end of said outer cup and the outer surface of the open end of the inner cup.

Claim 9

Dependent Claim 20 words

Vibration damping means as claimed in claim 6 comprising at least one elastomeric pad acting in compression between said cups.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1978-05-12	1978-11-11	1979-05-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1982-05-12	1982-11-11	1983-05-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1986-05-12	1986-11-11	1987-05-13	$7700.00	Window Closed / Lapsed

Vibration damping means

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