US5260367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle damping sheet
Assignee: Toda Kogyo Corp
•
Filing: 1991-08-13
•
Granted: 1993-11-09
•
Expires: 2011-08-13
Abstract
Abstract Disclosed herein is a vehicle damping sheet comprising a blend-mixture comprising a filler composed of mica, iron oxide particles and a auxiliary filler, and a binder, each of the amounts of the mica, the iron oxide particles and the auxiliary filler being not less than 5 parts by weight based on 100 parts by weight of the binder, the total amount of the mica, the iron oxide particles and the auxiliary filler being not less than 30 parts by weight based on 100 parts by weight of the binder, and the content of the iron oxide particles in the blend-mixture being from 2 to 40% by weight.
Inventors
- 👤 Tetsuro Toda
- 👤 Atsunori Kishimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:35
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/30; F16F9/306; C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K3/34
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
A vehicle damping sheet comprising a blend-mixture comprising a filler composed of mica, iron oxide particles and an auxiliary filler, and a binder containing (a) bituminous material of (b) ethylene vinyl acetate copolymers, the amount of said auxiliary filler being not less than 5 parts by weight based on 100 parts by weight of said binder, each of the amounts of said mica and said iron oxide particles being 5 to 200 parts by weight based on 100 parts by weight of said binder, the total amount of said mica, said iron oxide particles and said auxiliary filler being not less than 30 parts by weight based on 100 parts by weight of said binder, and the content of said iron oxide particles in said blend-mixture being from 2 to 40% by weight wherein the vehicle damping sheet has a loss factor (η) of at least 0.20 measured in a 2 mm thick specimen applied to a 0.8 mm thick substrate.
Claim 2
Dependent Claim
161 words
A vehicle damping sheet comprising a blend-mixture comprising a filler composed of mica, iron oxide particles and an auxiliary filler, and a binder containing (a) bituminous material of (b) ethylene vinyl acetate copolymers, the amount of said auxiliary filler being not less than 5 parts by weight based on 100 parts by weight of said binder, each of the amounts of said mica and said iron oxide particles being 5 to 200 parts by weight based on 100 parts by weight of said binder, the total amount of said mica, said iron oxide particles and said auxiliary filler being not less than 30 parts by weight based on 100 parts by weight of said binder, and the content of said iron oxide particles in said blend-mixture being from 2 to 40% by weight wherein the vehicle damping sheet has a loss factor (η) of at least 0.20 measured in a 2 mm thick specimen applied to a 0.8 mm thick substrate.
Claim 3
Dependent Claim
22 words
A vehicle damping sheet according to claim 1, wherein said binder contains not less than 20% by weight of the bituminous material.
Claim 4
Dependent Claim
22 words
A vehicle damping sheet according to claim 1, wherein said binder contains not less than 5% by weight of ethylene-vinyl acetate copolymers.
Claim 5
Dependent Claim
23 words
A vehicle damping sheet according to claim 1, wherein a content vinyl acetate of said ethylene-vinyl acetate copolymers is from 25 to 60%.
Claim 6
Dependent Claim
19 words
A vehicle damping sheet according to claim 1, wherein the size of mica is not greater than 350 μm.
Claim 7
Dependent Claim
23 words
A vehicle damping sheet according to claim 1, wherein the particle size of the iron oxide particles is from 0.05 to 100 μm.
Claim 8
Dependent Claim
27 words
A vehicle damping sheet according to claim 1, wherein the blending ratio (by weight) of the iron oxide particles to the mica is 0 05-10 : 1.
References Cited (Backward Citations)
GB1310241A
Cited
US3994845A
Cited
JPS5250522A
Cited
US4325858A
Cited
JPS60215014A
Cited
JPS60215013A
Cited
JPS61103977A
Cited
JPS61151227A
Cited
US4838939A
Cited
JPS63156859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |