US3770258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil damper for vehicles
Assignee: Honda Motor Co Ltd
•
Filing: 1972-04-26
•
Granted: 1973-11-06
•
Expires: 1992-04-26
Abstract
Abstract An oil damper for vehicles comprises a closed chamber supported by a body structure of the vehicle, the wall of which chamber is partially formed with an elastic body, such as a rubber disc, and a longitudinally expansible and contractible cylinder with a piston rod, one end of which is connected to the elastic body while the other end thereof is connected to a wheel suspension means of the vehicle. Oil is filled into the chamber and the cylinder, to flow between them through a conduit or hole in the piston, in accordance with the longitudinal expansive and contractive motion of the cylinder.
Inventors
- 👤 N Takahashi
- 👤 H Inoue
- 👤 Y Toshimitsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:48
CPC Classifications
B; B60; B60G; B60G15/00; B60G15/02; B60G15/06; B60G15/067; B60G15/068; B60G13/00; B60G13/001; B60G2204/00; B60G2204/10; B60G2204/12; B60G2204/128; B60G2204/40; B60G2204/41; B60G2204/4106; B60G2204/41062
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
247 words
An oil damper for vehicles, comprising: a closed chamber (17) supported by a body structure (1) of the vehicle, the latter also including suspension means (S) for a wheel (2); said chamber being formed with an elastic body (7) which has a central portion and a circumferential outer portion; said elastic body being surrounded by a casing (6); a longitudinally expansible and contractible oil cylinder (3) including a piston and piston rod (4/5) with a substantially axial hole (18) therethrough, interconnecting said chamber with said cylinder, and a cover (19) partly surrounding a portion (5) of said piston rod; the piston dividing the inner space of said cylinder into two compartments (13, 14), with a valve (9) acting therebetween; said chamber, said axial hole and said compartments of the cylinder being adapted to be filled up with oil which contacts said elastic body within said chamber; and means preventing the oil to get into contact with the outside atmosphere; wherein respective ends of said piston rod and cylinder are connected to said body structure and to said suspension means; said cylinder is in communication with said chamber through said axial hole; said elastic body is applied to the outer surface of said cover; and wherein the thickness of said elastic body gradually increases from said central portion to said outer portion, so that the oil is free to flow between said chamber and said cylinder in accordance with the longitudinal expansive and contractive motion of the latter.
Claim 2
Dependent Claim
247 words
An oil damper for vehicles, comprising: a closed chamber (17) supported by a body structure (1) of the vehicle, the latter also including suspension means (S) for a wheel (2); said chamber being formed with an elastic body (7) which has a central portion and a circumferential outer portion; said elastic body being surrounded by a casing (6); a longitudinally expansible and contractible oil cylinder (3) including a piston and piston rod (4/5) with a substantially axial hole (18) therethrough, interconnecting said chamber with said cylinder, and a cover (19) partly surrounding a portion (5) of said piston rod; the piston dividing the inner space of said cylinder into two compartments (13, 14), with a valve (9) acting therebetween; said chamber, said axial hole and said compartments of the cylinder being adapted to be filled up with oil which contacts said elastic body within said chamber; and means preventing the oil to get into contact with the outside atmosphere; wherein respective ends of said piston rod and cylinder are connected to said body structure and to said suspension means; said cylinder is in communication with said chamber through said axial hole; said elastic body is applied to the outer surface of said cover; and wherein the thickness of said elastic body gradually increases from said central portion to said outer portion, so that the oil is free to flow between said chamber and said cylinder in accordance with the longitudinal expansive and contractive motion of the latter.
Claim 3
Dependent Claim
32 words
The oil damper aS defined in claim 1, further comprising an end cover (16) for said chamber (17), an oil-supply hole (16A) in said end cover, and a removable cap (16B) thereon.
Claim 4
Dependent Claim
62 words
The oil damper as defined in claim 1, wherein, during the flow of the oil from said cylinder (3) towards said chamber (17), results in a higher rate of decrease in volume of one (14) of said compartments, which is further away from said chamber, than the increase in volume in another (13) of said compartments, which is closer to said chamber.
Claim 5
Dependent Claim
55 words
The oil damper as defined in claim 1, wherein said piston (4) is provided with a passage (8), and is covered with a disc (9) constituting said valve, to produce a narrow gap (12) with respect to said piston, and biasing means (10) acting between said disc and one end of said piston portion (5).
Claim 6
Dependent Claim
36 words
The oil damper as defined in claim 1, further comprising an elastic member (15) fixed to the outer surface of said piston rod portion (5) to form a stop against sudden movements of said cylinder (3).
Claim 7
Dependent Claim
34 words
The oil damper as defined in claim 5, further comprising a cover (15A) below said piston portion (5), substantially surrounding and protecting said elastic member (15) and a terminal portion of said cylinder (3).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |