US1242431A - Pneumatic spring. - Google Patents

Pneumatic spring. Download PDF

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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
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US
United States
Prior art keywords
casing
air
pneumatic spring
stem
flexible casing
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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
Application number
US85737514A
Inventor
Ernest D Foster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
UNITED AIR SPRING Co OF ARIZONA
Original Assignee
UNITED AIR SPRING Co OF ARIZONA
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Publication date
Application filed by UNITED AIR SPRING Co OF ARIZONA filed Critical UNITED AIR SPRING Co OF ARIZONA
Priority to US85737514A priority Critical patent/US1242431A/en
Application granted granted Critical
Publication of US1242431A publication Critical patent/US1242431A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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.
US85737514A 1914-08-18 1914-08-18 Pneumatic spring. Expired - Lifetime US1242431A (en)

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US85737514A US1242431A (en) 1914-08-18 1914-08-18 Pneumatic spring.

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US85737514A US1242431A (en) 1914-08-18 1914-08-18 Pneumatic spring.

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US1242431A true US1242431A (en) 1917-10-09

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Cited By (9)

* Cited by examiner, † Cited by third party
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

Cited By (10)

* Cited by examiner, † Cited by third party
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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