US1242431A - Pneumatic spring. - Google Patents
Pneumatic spring. Download PDFInfo
- Publication number
- US1242431A US1242431A US85737514A US1914857375A US1242431A US 1242431 A US1242431 A US 1242431A US 85737514 A US85737514 A US 85737514A US 1914857375 A US1914857375 A US 1914857375A US 1242431 A US1242431 A US 1242431A
- Authority
- US
- United States
- Prior art keywords
- casing
- air
- pneumatic spring
- stem
- flexible casing
- 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 - Lifetime
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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
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/0454—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by the assembling method or by the mounting arrangement, e.g. mounting of the membrane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/40—Constructional features of dampers and/or springs
- B60G2206/42—Springs
- B60G2206/424—Plunger or top retainer construction for bellows or rolling lobe type air springs
Definitions
- My invention relates to an improvement in pneumatic springs, and more particularly to such springs as are intended to be used upon vehicles to relieve the shock to the rider.
- the object of this invention is to provide a pneumatic spring in which the structure is substantial, readily attached, and when attached, gives a highly efficient cushioning action without a noticeable rebound.
- Figure l is a vertical sectional view to show one form which the invention may take, and
- Fig. 2 is a similar view to show a slightlyI modified form.
- a top-plate A is flanged at its edge as at 1 to form a face groove, and a flexible casing B is secured in this groove by means of .a collar 2, which is held in place by bolts 3, 3.
- the casing B is made semispherical or conoid in form, and is preferably of fabric reinforced rubber.
- a liningplate 4L is pref-v erably received within the top plate A, and has a flange on the edge thereof which lits tight against the casing B.
- a stem C is bifurcated to fit'over the part of the member to which the spring is to be attached in its lower part, and a bolt 6 is passed from the inside of the casing B through an opening in this casing, and is screwed into the stem C.
- connection between the stem C and the casing B be formed to be fluid-tight.
- the bolt 6 has a passage 7 therethrough, in which the upper threaded end of a nipple 9 is screwed, the latter forming a continuation of the bolt.
- An air tank D is provided with an opening 11 through which it may be filled, and a pipe or 'hoseline 12 extends from this tank D to the nip- -ple '9.
- a bolt 13 is secured to the upper plate A in such a relation that it forms a end,
- a pneumatic spring comprising a flexible casing having an annular ange at the upper edge thereof, a top plate having a flanged edge adapted to receive the flanged edge of the flexible casing, a collar having an upturned flange adapted to fit within the flange and embrace the under-side of the annular flange yof the flexible casing, means for drawing the collar and top plate toward each other in an air-tight embrace upon the opposite faces of the interposed ange of the flexible casing, a stem, a hollow boltV extending through the flexible casing into the stem, nuts on the bolt for securing the flexible casing to the stem, an air-tank and hose extending from the air-tank to the hollow bolt, whereby vconnection is established between the flexible casing and the air-tank.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
E. D. FOSTER.
PNEUMATIC SPR-ING.
APPLlcATloN man Aus. la. 1914.
Patented Oct. 9, 1917.
.ERNEST D. l:F.osalsrt, or Los Yairennns` caninoruirfr`A,v Ass'rsnoia, ,sy `ivi,asuE Assiett- PNEIMATI SPRING.. y
To all whomvl may concern: v Y
,'Be it-known thatiI, ERNEST D. FOSTER, citizen of the United States, residingatfIos Angeles, in the county'ofJ Los-Angeles, and State of California, -have invented' certain new and useful Improvements in Pneumatic Springs, of which the following' is a speciflcation.
My invention relates to an improvement in pneumatic springs, and more particularly to such springs as are intended to be used upon vehicles to relieve the shock to the rider.
The object of this invention is to provide a pneumatic spring in which the structure is substantial, readily attached, and when attached, gives a highly efficient cushioning action without a noticeable rebound.
This invention relates to certain other novel features of construction and combinations of parts which will be hereinafter fully described and pointed out in the claims.
In the accompanying drawings:
Figure l is a vertical sectional view to show one form which the invention may take, and
Fig. 2 is a similar view to show a slightlyI modified form.
A top-plate A is flanged at its edge as at 1 to form a face groove, and a flexible casing B is secured in this groove by means of .a collar 2, which is held in place by bolts 3, 3. The casing B is made semispherical or conoid in form, and is preferably of fabric reinforced rubber. A liningplate 4L is pref-v erably received within the top plate A, and has a flange on the edge thereof which lits tight against the casing B.
A stem C is bifurcated to fit'over the part of the member to which the spring is to be attached in its lower part, and a bolt 6 is passed from the inside of the casing B through an opening in this casing, and is screwed into the stem C.
It is preferable that this connection between the stem C and the casing B be formed to be fluid-tight. The bolt 6 has a passage 7 therethrough, in which the upper threaded end of a nipple 9 is screwed, the latter forming a continuation of the bolt. An air tank D is provided with an opening 11 through which it may be filled, and a pipe or 'hoseline 12 extends from this tank D to the nip- -ple '9. A bolt 13 is secured to the upper plate A in such a relation that it forms a end,
tweight.
Specification of LettersPatc-nt. r 191'?, f 'Appiieaaonineaaugust1s, 1914. seriarnassasra f i H u means of attachmentl lfor ,theyV In' use thespring` would-,be Qonnectedjn any .suitable pressure., ass-the, `circumstances may require. The air flows through the tube l2, and fills .the casingx-B 'whichsupportsthe As an obstruction is encountered, o-r a shock is transmitted to the spring, the stem is brought nearer to the top plate A, and the casing B is deformed, decreasing its cubic area and causing a part of the air to be displaced therefrom, and forced back through the tube l2 to the air tank D. This relieves any extraordinary compression in the casing B, and as the air forced therefrom mingles with the total volume in the air tank, there is no perceptible compression and hence no force to re-act and no recoil.
When the abnormal load is removed and the blow is spent against the increased area, the cushion will reform at practically the same pressure, and consequently the same air- -eushion effect will be maintained on the re- Y cheaply manufactured, and readily applied to take the place of the Ordinary metal spring now in general use.
It will be seen that slight changes might i be resorted to in the form and arrangementV derside of the annular ange of the flexible casing, and an internal disk having a downwardly projecting flange which forms an internal lateral support for the flexible casing7 and means for drawing the collar and the top plate toward each other in an air-tight embrace of the opposite faces of the interposed Hange of the flexible casing.
2. A pneumatic spring comprising a flexible casing having an annular ange at the upper edge thereof, a top plate having a flanged edge adapted to receive the flanged edge of the flexible casing, a collar having an upturned flange adapted to fit within the flange and embrace the under-side of the annular flange yof the flexible casing, means for drawing the collar and top plate toward each other in an air-tight embrace upon the opposite faces of the interposed ange of the flexible casing, a stem, a hollow boltV extending through the flexible casing into the stem, nuts on the bolt for securing the flexible casing to the stem, an air-tank and hose extending from the air-tank to the hollow bolt, whereby vconnection is established between the flexible casing and the air-tank.
In testimony whereof I aflix my signature, in the presence of two witnesses.
ERNEST D. FOSTER. Witnesses: Y
OLIVER B. GRAHAM, ERNEST H. BUSH.
Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.
Washington, D. C.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85737514A US1242431A (en) | 1914-08-18 | 1914-08-18 | Pneumatic spring. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85737514A US1242431A (en) | 1914-08-18 | 1914-08-18 | Pneumatic spring. |
Publications (1)
Publication Number | Publication Date |
---|---|
US1242431A true US1242431A (en) | 1917-10-09 |
Family
ID=3310232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US85737514A Expired - Lifetime US1242431A (en) | 1914-08-18 | 1914-08-18 | Pneumatic spring. |
Country Status (1)
Country | Link |
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US (1) | US1242431A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2623744A (en) * | 1949-07-14 | 1952-12-30 | Torres Roberto | Vehicle supporting structure |
US2917319A (en) * | 1956-11-19 | 1959-12-15 | Gen Motors Corp | Plural compartment fluid suspension for vehicles |
US2921781A (en) * | 1956-10-31 | 1960-01-19 | Air Lift Co | Selectively variable pressure apparatus for yieldably maintaining relatively movablemembers in spaced apart relation |
US2950104A (en) * | 1956-04-02 | 1960-08-23 | Gen Motors Corp | Air spring |
US3033558A (en) * | 1958-12-11 | 1962-05-08 | Gen Tire & Rubber Co | Single piston air spring with floating band |
US3043582A (en) * | 1956-10-02 | 1962-07-10 | Goodyear Tire & Rubber | Rolling lobe type air spring and method of manufacture |
US3078085A (en) * | 1957-02-11 | 1963-02-19 | Firestone Tire & Rubber Co | Vehicle suspension |
US3260282A (en) * | 1963-05-07 | 1966-07-12 | Haag Kg Albert | Buffer for looms |
US20120200020A1 (en) * | 2009-10-14 | 2012-08-09 | Firestone Industrial Products Company, Llc | End member, gas spring assembly and method |
-
1914
- 1914-08-18 US US85737514A patent/US1242431A/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2623744A (en) * | 1949-07-14 | 1952-12-30 | Torres Roberto | Vehicle supporting structure |
US2950104A (en) * | 1956-04-02 | 1960-08-23 | Gen Motors Corp | Air spring |
US3043582A (en) * | 1956-10-02 | 1962-07-10 | Goodyear Tire & Rubber | Rolling lobe type air spring and method of manufacture |
US2921781A (en) * | 1956-10-31 | 1960-01-19 | Air Lift Co | Selectively variable pressure apparatus for yieldably maintaining relatively movablemembers in spaced apart relation |
US2917319A (en) * | 1956-11-19 | 1959-12-15 | Gen Motors Corp | Plural compartment fluid suspension for vehicles |
US3078085A (en) * | 1957-02-11 | 1963-02-19 | Firestone Tire & Rubber Co | Vehicle suspension |
US3033558A (en) * | 1958-12-11 | 1962-05-08 | Gen Tire & Rubber Co | Single piston air spring with floating band |
US3260282A (en) * | 1963-05-07 | 1966-07-12 | Haag Kg Albert | Buffer for looms |
US20120200020A1 (en) * | 2009-10-14 | 2012-08-09 | Firestone Industrial Products Company, Llc | End member, gas spring assembly and method |
US8864113B2 (en) * | 2009-10-14 | 2014-10-21 | Firestone Industrial Products Company, Llc | End member, gas spring assembly and method |
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