Patent US4664804A successfully refreshed from Google Patents.
Patent US4721322A successfully refreshed from Google Patents.
US4721322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-dive braking apparatus
Assignee: Individual
•
Filing: 1986-06-17
•
Granted: 1988-01-26
•
Expires: 2006-06-17
Abstract
Abstract A vehicle anti-dive braking apparatus which prevents dive and increases suspension damping during braking. A rotatably mounted disc brake causes hydraulic fluid to flow from hydraulic reservoirs upon braking to an anti-dive cylinder, secondary damper cylinder and a bottom casing. Fluid flow to the anti-dive cylinder causes movement of a fork pipe therein to prevent dive while simultaneously causing valves in the secondary damper cylinder and bottom casing to close. The closing valves retain fluid pressure therein and thereby increase suspension damping. The damper in the bottom casing also provides increased suspension damping when a bump is encountered during braking action.
Inventors
- 👤 Robert W. Hawkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:20
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/06; B62K25/08; B60; B60G; B60G17/00; B60G17/02; B60G17/027; B60G17/0272; B62L; B62L1/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A vehicle anti-dive braking apparatus comprising: (a) brake means rotatably mounted on the axle of a wheel of said vehicle; (b) anti-dive means mounted on the frame of said vehicle; (c) a suspension strut mounted on the axle of said wheel of said vehicle and in sliding engagement with said anti-dive means, said suspension strut further comprising: i. a damper cylinder in sliding engagement with said anti-dive means; ii. a bottom casing attached to the axle of said vehicle and in sliding engagement with said damper cylinder; iii. a first damper housed within said bottom casing; iv. a first spring damper housed within said bottom casing; and v. a second spring damper housed within said bottom casing; and, (d) means attached to said brake means and in fluid communication with said anti-dive means and said suspension strut for hydraulically actuating said anti-dive means and said suspension strut.
Claim 2
Dependent Claim
147 words
A vehicle anti-dive braking apparatus comprising: (a) brake means rotatably mounted on the axle of a wheel of said vehicle; (b) anti-dive means mounted on the frame of said vehicle; (c) a suspension strut mounted on the axle of said wheel of said vehicle and in sliding engagement with said anti-dive means, said suspension strut further comprising: i. a damper cylinder in sliding engagement with said anti-dive means; ii. a bottom casing attached to the axle of said vehicle and in sliding engagement with said damper cylinder; iii. a first damper housed within said bottom casing; iv. a first spring damper housed within said bottom casing; and v. a second spring damper housed within said bottom casing; and, (d) means attached to said brake means and in fluid communication with said anti-dive means and said suspension strut for hydraulically actuating said anti-dive means and said suspension strut.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1, wherein said hydraulic actuation means actuates said anti-dive means and said suspension struct upon application of said brake means of said vehicle.
Claim 4
Dependent Claim
39 words
The apparatus of claim 1, wherein said brake means further comprises: (a) a brake arm rotatably mounted at one end on the axle of said wheel of said vehicle; and, (b)a brake caliper unit mounted on said brake arm.
Claim 5
Dependent Claim
50 words
The apparatus of claim 1, wherein said anti-dive means comprises: (a) an anti-dive cylinder attached to said frame of said vehicle and in fluid communication with said hydraulic actuation means; and (b) a fork pipe means slidably received in said anti-dive cylinder and in sliding engagement with said suspension strut.
Claim 6
Dependent Claim
161 words
A vehicle anti-dive braking apparatus comprising: (a) a brake arm rotatably mounted at one end on the axle of a wheel of a vehicle; (b) a brake caliper unit mounted on said brake arm; (c) anti-dive means mounted on the frame of said vehicle; (d) a suspension struct mounted on the axle of said wheel of said vehicle and in sliding engagement with said anti-dive means; said suspension strut further comprising: i. a damper cylinder in sliding engagement with said anti-dive means; ii. a bottom casing attached to the axle of said vehicle and in sliding engagement with said damper cylinder; iii. a first damper housed within said bottom casing; iv. a first spring damper housed within said bottom casing; and, v. a second spring damper housed within said bottom casing; and, (e) means attached to said brake means and in fluid communication with said anti-dive means and said suspension strut for hydraulically actuating said anti-dive means and said suspension strut.
Claim 7
Dependent Claim
161 words
A vehicle anti-dive braking apparatus comprising: (a) a brake arm rotatably mounted at one end on the axle of a wheel of a vehicle; (b) a brake caliper unit mounted on said brake arm; (c) anti-dive means mounted on the frame of said vehicle; (d) a suspension struct mounted on the axle of said wheel of said vehicle and in sliding engagement with said anti-dive means; said suspension strut further comprising: i. a damper cylinder in sliding engagement with said anti-dive means; ii. a bottom casing attached to the axle of said vehicle and in sliding engagement with said damper cylinder; iii. a first damper housed within said bottom casing; iv. a first spring damper housed within said bottom casing; and, v. a second spring damper housed within said bottom casing; and, (e) means attached to said brake means and in fluid communication with said anti-dive means and said suspension strut for hydraulically actuating said anti-dive means and said suspension strut.
Claim 8
Dependent Claim
32 words
The apparatus of claim 5, wherein said hydraulic actuation means supplies hydraulic fluid to said anti-dive means and said suspension strut in response to application of said brake means and rotation thereof.
Claim 9
Dependent Claim
66 words
The apparatus of claim 5, wherein said anti-dive means comprises: (a) an anti-dive cylinder attached to the frame of said vehicle and in fluid communication with said hydraulic actuation means; and (b) a fork pipe means slidably received in said anti-dive cylinder and movable between a first normal retracted position and a second extended position in said cylinder and in sliding engagement with said suspension strut.
Claim 10
Dependent Claim
129 words
A vehicle anti-dive braking apparatus comprising: (a) brake means rotatably mounted on the axle of a wheel of said vehicle; (b) an anti-dive cylinder attached to the frame of said vehicle; (c) fork pipe means slidably received in said anti-dive cylinder and movable between a first normal retracted position and a second extended position in said anti-dive cylinder; (d) a first damper cylinder in sliding engagement with said fork pipe means; (e) a bottom casing attached to the axle of said wheel of said vehicle and in sliding engagement with said first damper cylinder; and, (f) hydraulic fluid means attached to said brake means and in fluid communication with said anti-dive cylinder, said secondary damper cylinder, and said bottom casing for providing hydraulic fluid to said cylinders and casing.
Claim 11
Dependent Claim
129 words
A vehicle anti-dive braking apparatus comprising: (a) brake means rotatably mounted on the axle of a wheel of said vehicle; (b) an anti-dive cylinder attached to the frame of said vehicle; (c) fork pipe means slidably received in said anti-dive cylinder and movable between a first normal retracted position and a second extended position in said anti-dive cylinder; (d) a first damper cylinder in sliding engagement with said fork pipe means; (e) a bottom casing attached to the axle of said wheel of said vehicle and in sliding engagement with said first damper cylinder; and, (f) hydraulic fluid means attached to said brake means and in fluid communication with said anti-dive cylinder, said secondary damper cylinder, and said bottom casing for providing hydraulic fluid to said cylinders and casing.
Claim 12
Dependent Claim
27 words
The apparatus of claim 8, wherein rotation of said brake means in response to braking action actuates the flow of hydraulic fluid from said hydraulic fluid means.
Claim 13
Dependent Claim
137 words
The apparatus of claim 8, further comprising: (a) at least one adjustable valve mounted on said anti-dive cylinder for controlling the quantity of hydraulic fluid delivered thereto and thereby adjusting the amount of travel of said fork pipe between said first and second positions; (b) a first valve on said second damper cylinder in fluid communication with said hydraulic fluid means movable form a first normal open position to a second closed position in response to hydraulic fluid pressure, thereby preventing sliding movement of said fork pipe within said second damper cylinder; and (c) a second valve mounted on said bottom casing in fluid communication with said hydraulic fluid means movable from a first normal open position to a second closed position in response to hydraulic fluid pressure, thereby increasing fluid damping pressure in said bottom caing.
References Cited (Backward Citations)
US3173671A
Cited
US3537715A
Cited
US4159105A
Cited
JPS5625008A
Cited
GB2073680A
Cited
US4367882A
Cited
US4437678A
Cited
US4524844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-25 | 1991-07-27 | 1992-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-25 | 1995-07-27 | 1996-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-25 | 1999-07-27 | 2000-01-26 | $7700.00 | Window Closed / Lapsed |