GB402337A - Improvements in or relating to shock absorbers - Google Patents
Improvements in or relating to shock absorbersInfo
- Publication number
- GB402337A GB402337A GB12922/32A GB1292233A GB402337A GB 402337 A GB402337 A GB 402337A GB 12922/32 A GB12922/32 A GB 12922/32A GB 1292233 A GB1292233 A GB 1292233A GB 402337 A GB402337 A GB 402337A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- spring
- vehicle body
- piston
- sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/504—Inertia, i.e. acceleration,-sensitive means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
402,337. Hydraulic shock-absorbers. DELCO PRODUCTS CORPORATION, 329, East 1st Street, Dayton, Ohio, U.S.A.- (Assignees of Rossman, E. F. ; 1845, Emerson Avenue, and Kindl, C. H.; 159, Lonsdale Avenue, both in Dayton, Ohio, U.S.A.) May 3, 1933, No. 12922. Convention date, Jan. 16, 1933. [Class 108 (iii).] In a vehicle hydraulic shock-absorber comprising a cylinder 27, Fig. 3, in which a doubleended piston 40 is reciprocated by vehicle spring vibrations, in addition to an intake valve 54 or 70 and a pressure release valve 58 or 71 in each end of the piston which permit restricted flow of fluid through the piston to and from a central reservoir 26, a sleeve-valve 96, Fig. 2, secured to and governed by a spring-pressed inertia-controlled mass 100, is provided in a chamber 80 connected with one end 51 of the cylinder through passages 91, 82, 85 and increases the resistance of the shock-absorber on vertical acceleration of the vehicle body. The description is limited to means for increasing the shock absorber resistance on upward acceleration only of the vehicle body. During small separating movements of the body and axle the piston 41, Fig. 3, moves to the right and (a) liquid from the reservoir 26 lifts the valve 54 and flows to the chamber 50 while (b) liquid under pressure in the chamber 51 lifts the spring-pressed valve 87, which is less heavily loaded than the valve 71 which therefore remains closed, and passes to the chamber 80 through passages 82, 91, apertures 93 and an annular groove 92 in a plug 90, and a sidepassage 97 in the sleeve-valve 96. If, however, there is sufficiently great upward acceleration of the vehicle body the plug 90 moves upwards relative to the sleeve-valve 96 which substantially closes the apertures 93, and the pressure of the liquid in the chamber 51 opens the valve 71 and the liquid flows to the reservoir 26. Downward movement of the plug 90 relative to the sleeve-valve on downward movement of the vehicle body is prevented by a strong spring 106 acting on the mass 100. The maximum resistance of the shock-absorber is maintained during the whole upward accelerated movement of the vehicle body as the liquid passing through the passages 93 in the plug 90 encounters a greater resistance when passing through the part of the groove 92 diametrically opposite the side-passage 97 than when passing through the passage 97 itself and this greater pressure on one side of the valve causes it to " stick in the open position. In a modification, however, the passage 97 is replaced by an annular groove and the sleeve valve being thus " balanced " is gradually closed by its return spring as the acceleration of the vehicle body diminishes. The piston 40, Fig. 3, is in two parts 41, 42 pressed together by springs 45, 46 acting on bolts 43, 44 screwed into the parts 41, 42. The valve 54 is pressed on an annular ridge 53 by a spring 55 bearing at its other end against a ring 56 fixed in a groove in the passage 52 while the valve 58 which has a sharp edge 59 is pressed against the inner surface of the valve 54 by a spring 62 stronger than the spring 55 and acting between the valve 54 and an abutment 61 on the end of the valve-stem 57.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US631772XA | 1933-01-16 | 1933-01-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB402337A true GB402337A (en) | 1933-11-30 |
Family
ID=22047457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12922/32A Expired GB402337A (en) | 1933-01-16 | 1933-05-03 | Improvements in or relating to shock absorbers |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE396598A (en) |
DE (1) | DE631772C (en) |
GB (1) | GB402337A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8607942B2 (en) | 2006-04-02 | 2013-12-17 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
US9657804B2 (en) | 2001-08-30 | 2017-05-23 | Fox Factory, Inc. | Front bicycle suspension assembly with inertia valve |
US11346422B2 (en) | 2001-08-30 | 2022-05-31 | Fox Factory, Inc. | Front bicycle suspension assembly with inertia valve |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE919867C (en) * | 1943-07-08 | 1954-11-04 | Hemscheidt Maschf Hermann | Hydraulic vibration damper |
DE920230C (en) * | 1949-11-29 | 1954-11-15 | Hemscheidt Maschf Hermann | Hydraulic vibration damper, especially for motor vehicles |
DE940033C (en) * | 1952-01-03 | 1956-03-08 | Willy Gatter | Control of the damper resistance of hydraulic telescopic shock absorbers |
-
0
- BE BE396598D patent/BE396598A/xx unknown
-
1933
- 1933-05-03 GB GB12922/32A patent/GB402337A/en not_active Expired
- 1933-05-18 DE DED65895D patent/DE631772C/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9657804B2 (en) | 2001-08-30 | 2017-05-23 | Fox Factory, Inc. | Front bicycle suspension assembly with inertia valve |
US10316924B2 (en) | 2001-08-30 | 2019-06-11 | Fox Factory, Inc. | Front bicycle suspension assembly with inertia valve |
US11346422B2 (en) | 2001-08-30 | 2022-05-31 | Fox Factory, Inc. | Front bicycle suspension assembly with inertia valve |
US8607942B2 (en) | 2006-04-02 | 2013-12-17 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
US9261163B2 (en) | 2006-04-02 | 2016-02-16 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
US9746049B2 (en) | 2006-04-02 | 2017-08-29 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
US10359092B2 (en) | 2006-04-02 | 2019-07-23 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
US11085503B2 (en) | 2006-04-02 | 2021-08-10 | Fox Factory, Inc. | Suspension damper having inertia valve and user adjustable pressure-relief |
Also Published As
Publication number | Publication date |
---|---|
DE631772C (en) | 1936-06-27 |
BE396598A (en) |
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