US3141660A - Coil springs - Google Patents
Coil springs Download PDFInfo
- Publication number
- US3141660A US3141660A US94191A US9419161A US3141660A US 3141660 A US3141660 A US 3141660A US 94191 A US94191 A US 94191A US 9419161 A US9419161 A US 9419161A US 3141660 A US3141660 A US 3141660A
- Authority
- US
- United States
- Prior art keywords
- spring
- coils
- rib
- coil
- coil springs
- 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
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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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/13—Attachments or mountings comprising inserts and spacers between the windings for changing the mechanical or physical characteristics of the spring
Definitions
- variable rate coil spring For many suspension purposes there is a need of a variable rate coil spring and hitherto proposals have been made for providing springs of variable pitch between the coils, the arrangement being such that as the spring deflects it will become progressively coil bound thereby raising the rate of deection.
- springs of the form indicated are subject to certain disadvantages. In the rst place they are diicult to manufacture because for full eiciency the pitch variation must be held to very close limits and secondly when they are coil bound the inevitable rubbing between the coils results in surface damage which weakens the spring and shortens its working life. Furthermore coil to coil metallic contact creates objectionable noise.
- variable rate coil spring which will not be subjected to the disadvantage indicated and in accordance therewith it is proposed to insert between a preselected number of coils of a coil spring a helical rib of rubber, plastic or other material.
- the rib may be of tapering section or of progressively decreasing or increasing thickness so that as a spring to which such strip is applied is deflected the coils will be progressively locked in turn.
- the drawing denotes a conventional coil spring while 11 denotes a moulding of rubber or plastic material comprising a sleeve of bellows like formation having an external helical rib 12 which is of progressively tapering thickness.
- the moulding does not extend over the full length of the spring so that the coils designated a will comprise what may be termed full deflection coils which will function in a perfectly normal manner. It will be appreciated however that those coils of the spring between which the rib 12 is present will upon deflection or compression of the spring be locked up or rendered inactive so that effectively the rate of the spring will be varied.
- the progressive tapering of the rib as shown the coils between which said rib is present will be locked up progressively. While tapering of the rib is advantageous such a feature is not however essential and said rib may well be of constant thickness throughout its length.
- a sleeve like moulding of rubber or plastic material so dimensioned as to be capable of being applied over a coiled spring to sheath the latter for a preselected portion of its length and in such a case the helical rib would be formed internally of such sleeve like moulding so as to project between the spring coils.
- the helical rib might be of some elastic material which is bonded to adjacent coils so that in the free position of the spring it will be under tension while on deliection of the spring it will be subjected to compression until it is the equivalent of a solid rib which will render the particular spring coils inactive.
- a helical rib may be provided between the coils of a variable pitch spring, such rib being of either tapering or constant section.
- the rib for insertion between the coils of any selected spring may be of rubber, plastic, or any other material which will withstand the frictional Wear satisfactorily and give adequate fatigue life.
- a variable rate spring comprising a constant rate coil spring and a substantially cylindrical element concentrically disposed with respect to said coil spring, said cylindrical element being provided with a helical rib adapted to be interposed between a preselected number of convolutions of said coil spring, said helical rib having a progressively tapered axial thickness and being operable to preclude the movement of certain of said convolutions upon the application of a predetermined force on said coil spring.
Description
July 21, 1964 J. F. CLARKE ETAL. 3,141,660
United States Patent O 3,141,660 COIL SPRINGS .lohn Firstbrook Clarke and Ernest Smith Simpson,
(lssett, England, assignors to Woodhead Monroe Limited, Ossett, England, a British company Filed Mar. 8, 1961, Ser. No. 94,191 l Claim. (Cl. 267-60) This invention relates to coil springs.
For many suspension purposes there is a need of a variable rate coil spring and hitherto proposals have been made for providing springs of variable pitch between the coils, the arrangement being such that as the spring deflects it will become progressively coil bound thereby raising the rate of deection. However, springs of the form indicated are subject to certain disadvantages. In the rst place they are diicult to manufacture because for full eiciency the pitch variation must be held to very close limits and secondly when they are coil bound the inevitable rubbing between the coils results in surface damage which weakens the spring and shortens its working life. Furthermore coil to coil metallic contact creates objectionable noise.
It is the chief object of the present invention to provide for a variable rate coil spring which will not be subjected to the disadvantage indicated and in accordance therewith it is proposed to insert between a preselected number of coils of a coil spring a helical rib of rubber, plastic or other material. Conveniently, the rib may be of tapering section or of progressively decreasing or increasing thickness so that as a spring to which such strip is applied is deflected the coils will be progressively locked in turn. By suitable dimensioning of the strip it will be possible to provide a completely progressive spring rate or one, two, three or more changes of rate at given deflections of the spring.
In order that the said invention may be clearly understood and readily carried into effect the same will be hereinafter more fully described with reference to the accompanying drawing which illustrates one embodiment by way of example.
Referring now to the drawing denotes a conventional coil spring while 11 denotes a moulding of rubber or plastic material comprising a sleeve of bellows like formation having an external helical rib 12 which is of progressively tapering thickness. In the embodiment illustrated the moulding does not extend over the full length of the spring so that the coils designated a will comprise what may be termed full deflection coils which will function in a perfectly normal manner. It will be appreciated however that those coils of the spring between which the rib 12 is present will upon deflection or compression of the spring be locked up or rendered inactive so that effectively the rate of the spring will be varied. By virtue of the progressive tapering of the rib as shown the coils between which said rib is present will be locked up progressively. While tapering of the rib is advantageous such a feature is not however essential and said rib may well be of constant thickness throughout its length.
It may be mentioned here that with an arrangement such as is illustrated in the drawing it may be necessary "ice to provide some means for maintaining the moulding in position within the spring.
As an alternative it may be feasible to provide a sleeve like moulding of rubber or plastic material so dimensioned as to be capable of being applied over a coiled spring to sheath the latter for a preselected portion of its length and in such a case the helical rib would be formed internally of such sleeve like moulding so as to project between the spring coils.
Instead of either of the arrangements indicated above it may be feasible to introduce a helical rib between a predetermined number of coils of a spring and to retain such rib in the required position by means of two tubular elements or equivalent retaining means which are arranged concentrically on an end cap applied to the spring, one of such elements being adapted to project into the spring coaXially therewith while the other surrounds said spring. Again in place of such retaining means it may be feasible to mould, bond or otherwise attach the rib to the selected coils on one side of the latter, or alternatively the helical rib might be of some elastic material which is bonded to adjacent coils so that in the free position of the spring it will be under tension while on deliection of the spring it will be subjected to compression until it is the equivalent of a solid rib which will render the particular spring coils inactive.
In yet another embodiment a helical rib may be provided between the coils of a variable pitch spring, such rib being of either tapering or constant section.
It may be mentioned here that depending upon the particular mode of application the rib for insertion between the coils of any selected spring may be of rubber, plastic, or any other material which will withstand the frictional Wear satisfactorily and give adequate fatigue life.
Whichever way the helical rib is located in the spring it can be designed and made to ensure that any preselected number of coils will be rendered ineffective at any particular deflection of the spring. Thus it is possible to provide either a completely progressive variable rate spring or alternatively one, two, three or more changes of rate at given deliections.
We claim:
A variable rate spring comprising a constant rate coil spring and a substantially cylindrical element concentrically disposed with respect to said coil spring, said cylindrical element being provided with a helical rib adapted to be interposed between a preselected number of convolutions of said coil spring, said helical rib having a progressively tapered axial thickness and being operable to preclude the movement of certain of said convolutions upon the application of a predetermined force on said coil spring.
References Cited in the file of this patent UNITED STATES PATENTS 1,404,464 Meyer lan. 24, 1922 2,344,858 Farmer Mar. 28, 1942 2,661,206 Gregoire Dec. l, 1953 2,703,234 Tapp Mar. 1, 1955 2,832,587 Robert Apr. 29, 1958
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US94191A US3141660A (en) | 1961-03-08 | 1961-03-08 | Coil springs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US94191A US3141660A (en) | 1961-03-08 | 1961-03-08 | Coil springs |
Publications (1)
Publication Number | Publication Date |
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US3141660A true US3141660A (en) | 1964-07-21 |
Family
ID=22243704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US94191A Expired - Lifetime US3141660A (en) | 1961-03-08 | 1961-03-08 | Coil springs |
Country Status (1)
Country | Link |
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US (1) | US3141660A (en) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1282361B (en) * | 1967-07-15 | 1968-11-07 | Licentia Gmbh | Cylindrical coil spring with progressive spring characteristics for use in electromagnetic vibrators |
US3861661A (en) * | 1972-09-21 | 1975-01-21 | Nissan Motor | Compression spring assembly |
US4033644A (en) * | 1975-07-19 | 1977-07-05 | Ford Motor Company | Method for preloading bearing |
DE2924135A1 (en) * | 1978-06-28 | 1980-01-03 | Mo Mash Z Im Kalinina | HYDRAULIC AXIAL PISTON MACHINE |
DE2942135A1 (en) * | 1979-10-18 | 1981-04-30 | Volkswagenwerk Ag, 3180 Wolfsburg | UNDERLAY OF ELASTIC MATERIAL FOR COIL SPRINGS OF A MOTOR VEHICLE SUSPENSION |
US4614333A (en) * | 1983-06-20 | 1986-09-30 | Gaylord James K | Devices for automotive vehicle coil springs |
US4712778A (en) * | 1981-12-21 | 1987-12-15 | North American Philips Corporation | Helical spring holder assembly |
US4728087A (en) * | 1985-02-07 | 1988-03-01 | Multikunst Design Aps | Anchoring arrangement for heavy coil springs, primarily in coil spring carried playground devices |
US4923182A (en) * | 1987-06-13 | 1990-05-08 | Webley & Scott Limited | Spring energized air guns |
JP2004001694A (en) * | 2002-02-25 | 2004-01-08 | Robert Bosch Gmbh | Master cylinder with improved pedal feeling simulation means for electric hydraulic braking system, and electric hydraulic braking system with the master cylinder |
US20040119216A1 (en) * | 2002-07-30 | 2004-06-24 | Johannes Menzel | Antivibration element |
US20050218572A1 (en) * | 2002-12-27 | 2005-10-06 | Eiichi Soga | Closed end type coiled spring with reduced initial deflection |
US20060145403A1 (en) * | 2004-12-16 | 2006-07-06 | Satoshi Oohashi | Spring spacer for a spring |
US20070267791A1 (en) * | 2004-09-21 | 2007-11-22 | Thomas Sugar | Adjustable Stiffness Jack Spring Actuator |
US20080018033A1 (en) * | 2006-07-18 | 2008-01-24 | Kabushiki Kaisya Toska | Coiled part formed of plastic material and method of manufacturing the same |
US20080277846A1 (en) * | 2007-05-11 | 2008-11-13 | Hilti Aktiengesellschaft | Vibrating hand-held power tool |
US20090126559A1 (en) * | 2003-02-06 | 2009-05-21 | Dimitrios Mantas | Plug For Gun Recoil Mechanism |
US20090203441A1 (en) * | 2008-02-13 | 2009-08-13 | X Sports Collectables, Llc | Skateboard video controller |
FR2928750A1 (en) * | 2008-03-14 | 2009-09-18 | Peugeot Citroen Automobiles Sa | Clutch control assisting device for motor vehicle, has helical spring formed from wound wire following constant step, where wire comprises straight part with shape for receiving guide ring to ensure guiding between two helical springs |
US7677540B1 (en) * | 2003-04-04 | 2010-03-16 | Duval Eugene F | Dual pulley constant force mechanism |
US20100327500A1 (en) * | 2008-11-06 | 2010-12-30 | Environmental Container Systems, Inc., D/B/A Ecs Composites | Variable spring rate shock mount having a replaceable core |
US20110210487A1 (en) * | 2008-10-31 | 2011-09-01 | F. Tech Incorporation | Vibration insulation damper for coil spring |
WO2012139782A1 (en) * | 2011-04-14 | 2012-10-18 | Thyssenkrupp Bilstein Suspension Gmbh | Bearing arrangement for a spring of a vehicle chassis |
US20140159296A1 (en) * | 2011-07-28 | 2014-06-12 | Liebherr-Aerospace Lindenberg Gmbh | Spring system for an aircraft |
WO2018011282A1 (en) * | 2016-07-12 | 2018-01-18 | Thyssenkrupp Bilstein Gmbh | Bellows assembly and bellows for vehicles |
US10604207B2 (en) | 2018-02-12 | 2020-03-31 | Carl Winefordner | System and method for adjusting spring rate of a coil spring in a bike suspension |
US10611428B2 (en) | 2018-02-12 | 2020-04-07 | Carl Winefordner | System and method for adjusting spring rate of a coil spring in a bike suspension |
US11518017B2 (en) * | 2017-12-19 | 2022-12-06 | Hilti Aktiengesellschaft | Vibration-damped hand-held power tool |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1404464A (en) * | 1920-12-13 | 1922-01-24 | Adolph F Meyer | Spring |
US2344858A (en) * | 1942-03-28 | 1944-03-21 | Westinghouse Air Brake Co | Brake cylinder device |
US2661206A (en) * | 1947-04-15 | 1953-12-01 | Gregoire Jean Albert | Suspension device for vehicles |
US2703234A (en) * | 1953-01-02 | 1955-03-01 | Damon L Tapp | Means for restoring the strength to weakened coil springs |
US2832587A (en) * | 1955-06-06 | 1958-04-29 | Universal Air Lift Inc | Spring booster assemblies |
-
1961
- 1961-03-08 US US94191A patent/US3141660A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1404464A (en) * | 1920-12-13 | 1922-01-24 | Adolph F Meyer | Spring |
US2344858A (en) * | 1942-03-28 | 1944-03-21 | Westinghouse Air Brake Co | Brake cylinder device |
US2661206A (en) * | 1947-04-15 | 1953-12-01 | Gregoire Jean Albert | Suspension device for vehicles |
US2703234A (en) * | 1953-01-02 | 1955-03-01 | Damon L Tapp | Means for restoring the strength to weakened coil springs |
US2832587A (en) * | 1955-06-06 | 1958-04-29 | Universal Air Lift Inc | Spring booster assemblies |
Cited By (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1282361B (en) * | 1967-07-15 | 1968-11-07 | Licentia Gmbh | Cylindrical coil spring with progressive spring characteristics for use in electromagnetic vibrators |
US3861661A (en) * | 1972-09-21 | 1975-01-21 | Nissan Motor | Compression spring assembly |
US4033644A (en) * | 1975-07-19 | 1977-07-05 | Ford Motor Company | Method for preloading bearing |
DE2924135A1 (en) * | 1978-06-28 | 1980-01-03 | Mo Mash Z Im Kalinina | HYDRAULIC AXIAL PISTON MACHINE |
DE2942135A1 (en) * | 1979-10-18 | 1981-04-30 | Volkswagenwerk Ag, 3180 Wolfsburg | UNDERLAY OF ELASTIC MATERIAL FOR COIL SPRINGS OF A MOTOR VEHICLE SUSPENSION |
US4475725A (en) * | 1979-10-18 | 1984-10-09 | Volkswagenwerk Ag | Elastic support for helical springs |
US4712778A (en) * | 1981-12-21 | 1987-12-15 | North American Philips Corporation | Helical spring holder assembly |
US4614333A (en) * | 1983-06-20 | 1986-09-30 | Gaylord James K | Devices for automotive vehicle coil springs |
US4728087A (en) * | 1985-02-07 | 1988-03-01 | Multikunst Design Aps | Anchoring arrangement for heavy coil springs, primarily in coil spring carried playground devices |
FR2604501A1 (en) * | 1985-08-16 | 1988-04-01 | Gaylord James | DEVICE FOR INCREASING THE STIFFNESS OF HELICOIDAL SPRINGS IN MOTOR VEHICLES |
AU580440B2 (en) * | 1985-08-16 | 1989-01-12 | James Kane Gaylord | Device for automotive vehicle coil springs |
US4923182A (en) * | 1987-06-13 | 1990-05-08 | Webley & Scott Limited | Spring energized air guns |
JP2004001694A (en) * | 2002-02-25 | 2004-01-08 | Robert Bosch Gmbh | Master cylinder with improved pedal feeling simulation means for electric hydraulic braking system, and electric hydraulic braking system with the master cylinder |
JP4510388B2 (en) * | 2002-02-25 | 2010-07-21 | ロバート ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Master cylinder for an electrohydraulic braking system with improved pedal feel simulation means and electrohydraulic braking system with such a master cylinder |
US20040119216A1 (en) * | 2002-07-30 | 2004-06-24 | Johannes Menzel | Antivibration element |
US7270320B2 (en) * | 2002-07-30 | 2007-09-18 | Andreas Stihl Ag & Co. Kg | Antivibration element |
US20050218572A1 (en) * | 2002-12-27 | 2005-10-06 | Eiichi Soga | Closed end type coiled spring with reduced initial deflection |
US7213802B2 (en) * | 2002-12-27 | 2007-05-08 | Neturen Co., Ltd. | Closed end type coiled spring with reduced initial deflection |
JPWO2004061325A1 (en) * | 2002-12-27 | 2006-05-11 | 高周波熱錬株式会社 | Closed end type coil spring with reduced initial deflection |
US20090126559A1 (en) * | 2003-02-06 | 2009-05-21 | Dimitrios Mantas | Plug For Gun Recoil Mechanism |
US7677540B1 (en) * | 2003-04-04 | 2010-03-16 | Duval Eugene F | Dual pulley constant force mechanism |
US20100243377A1 (en) * | 2003-04-04 | 2010-09-30 | Duval Eugene F | Device for translating a force including a focused groove |
US20070267791A1 (en) * | 2004-09-21 | 2007-11-22 | Thomas Sugar | Adjustable Stiffness Jack Spring Actuator |
US7992849B2 (en) * | 2004-09-21 | 2011-08-09 | Thomas Sugar | Adjustable stiffness jack spring actuator |
US8322695B2 (en) | 2004-09-21 | 2012-12-04 | Thomas Sugar | Adjustable stiffness Jack Spring actuator |
US7527252B2 (en) * | 2004-12-16 | 2009-05-05 | Yamaha Hatsudoki Kabushiki Kaisha | Spring spacer for a spring |
US20060145403A1 (en) * | 2004-12-16 | 2006-07-06 | Satoshi Oohashi | Spring spacer for a spring |
US20080018033A1 (en) * | 2006-07-18 | 2008-01-24 | Kabushiki Kaisya Toska | Coiled part formed of plastic material and method of manufacturing the same |
US20080277846A1 (en) * | 2007-05-11 | 2008-11-13 | Hilti Aktiengesellschaft | Vibrating hand-held power tool |
US8511658B2 (en) * | 2007-05-11 | 2013-08-20 | Hilti Aktiengesellschaft | Vibrating hand-held power tool |
US20090203441A1 (en) * | 2008-02-13 | 2009-08-13 | X Sports Collectables, Llc | Skateboard video controller |
FR2928750A1 (en) * | 2008-03-14 | 2009-09-18 | Peugeot Citroen Automobiles Sa | Clutch control assisting device for motor vehicle, has helical spring formed from wound wire following constant step, where wire comprises straight part with shape for receiving guide ring to ensure guiding between two helical springs |
CN102187113A (en) * | 2008-10-31 | 2011-09-14 | 株式会社F.泰克 | Anti-vibration damper for coil spring |
CN102187113B (en) * | 2008-10-31 | 2013-05-15 | 株式会社F.泰克 | Anti-vibration damper for coil spring |
US20110210487A1 (en) * | 2008-10-31 | 2011-09-01 | F. Tech Incorporation | Vibration insulation damper for coil spring |
US8800972B2 (en) | 2008-10-31 | 2014-08-12 | F-Tech Inc. | Vibration insulation damper for coil spring |
US8172208B2 (en) * | 2008-11-06 | 2012-05-08 | Environmental Container Systems | Variable spring rate shock mount having a replaceable core |
US20100327500A1 (en) * | 2008-11-06 | 2010-12-30 | Environmental Container Systems, Inc., D/B/A Ecs Composites | Variable spring rate shock mount having a replaceable core |
CN103635335B (en) * | 2011-04-14 | 2017-06-23 | 蒂森克虏伯费登斯泰博里萨托里公司 | For the supporting arrangement of vehicle chassis spring |
WO2012139782A1 (en) * | 2011-04-14 | 2012-10-18 | Thyssenkrupp Bilstein Suspension Gmbh | Bearing arrangement for a spring of a vehicle chassis |
CN103635335A (en) * | 2011-04-14 | 2014-03-12 | 蒂森克虏伯费登斯泰博里萨托里公司 | Bearing arrangement for a spring of a vehicle chassis |
US9334913B2 (en) | 2011-04-14 | 2016-05-10 | ThyssenKrupp Federn und Stabilisatoren GmbH | Bearing arrangement for a spring of a vehicle chassis |
US20140159296A1 (en) * | 2011-07-28 | 2014-06-12 | Liebherr-Aerospace Lindenberg Gmbh | Spring system for an aircraft |
WO2018011282A1 (en) * | 2016-07-12 | 2018-01-18 | Thyssenkrupp Bilstein Gmbh | Bellows assembly and bellows for vehicles |
US10808785B2 (en) | 2016-07-12 | 2020-10-20 | Thyssenkrupp Bilstein Gmbh | Bellows assembly and bellows for vehicles |
US11518017B2 (en) * | 2017-12-19 | 2022-12-06 | Hilti Aktiengesellschaft | Vibration-damped hand-held power tool |
EP3727762B1 (en) * | 2017-12-19 | 2023-10-18 | Hilti Aktiengesellschaft | Vibration-dampened hand-held machine tool |
US10604207B2 (en) | 2018-02-12 | 2020-03-31 | Carl Winefordner | System and method for adjusting spring rate of a coil spring in a bike suspension |
US10611428B2 (en) | 2018-02-12 | 2020-04-07 | Carl Winefordner | System and method for adjusting spring rate of a coil spring in a bike suspension |
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