GB2491135A - Energy absorbing ball filled with dilatant compound - Google Patents

Energy absorbing ball filled with dilatant compound Download PDF

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Publication number
GB2491135A
GB2491135A GB1108686.5A GB201108686A GB2491135A GB 2491135 A GB2491135 A GB 2491135A GB 201108686 A GB201108686 A GB 201108686A GB 2491135 A GB2491135 A GB 2491135A
Authority
GB
United Kingdom
Prior art keywords
ball
holder according
holder
pressure plate
fitted
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.)
Withdrawn
Application number
GB1108686.5A
Other versions
GB201108686D0 (en
Inventor
Mark Richard Curtis
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB1108686.5A priority Critical patent/GB2491135A/en
Publication of GB201108686D0 publication Critical patent/GB201108686D0/en
Publication of GB2491135A publication Critical patent/GB2491135A/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/02—Braking devices, e.g. checks; Stops; Buffers specially for preventing the slamming of swinging wings during final closing movement, e.g. jamb stops
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/529—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users specially adapted for signalling by sound or vibrations, e.g. rumble strips; specially adapted for enforcing reduced speed, e.g. speed bumps
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F5/00—Braking devices, e.g. checks; Stops; Buffers
    • E05F5/06—Buffers or stops limiting opening of swinging wings, e.g. floor or wall stops
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F42B12/745—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body the core being made of plastics; Compounds or blends of plastics and other materials, e.g. fillers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/21—Brakes
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2201/00—Constructional elements; Accessories therefor
    • E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
    • E05Y2201/252—Type of friction
    • E05Y2201/254—Fluid or viscous friction
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2800/00—Details, accessories and auxiliary operations not otherwise provided for
    • E05Y2800/26—Form or shape

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Abstract

A sealed hollow, preferably rubber, ball 1 filled with a dilitant compound (shear thickening compound) 2. The dilatant ball may be used as a non-lethal projectile, or a collection of balls may loosely fill a container and function as a speed bump. More preferably a hemispherical holder 3 retaining the ball 1 may be mounted to a door frame 7 and function as a door buffer.

Description

Energy Absorbing Device This invention relates to the improved performance of energy absorbing devices known commonly as buffers, when used to prevent damage or injury by collision or shock.
Buffers and shock absorbing devices have typically been attached to objects to provide for cushioning or dampening and to arrest the inertia of objects in linear or non-linear motion, doors being a typical example.
A rubber buffer works in a way that it stores energy rather than dispersing it, the majority of the resultant loads being rebound back again.
Hydraulic, pneumatic and other mechanical methods have also been employed to achieve the same results, Gas springs and coiled springs being the most obvious
examples.
An objective of the present invention is to combine the properties of a rubber buffer, with the properties of a Non Newtonian material known as a dilatant compound.
Dilatant compounds have long been known, the most widely known examples being "silly putty" or "bouncing putty".
The present invention provides for a sealed hollow spherical, egg or ovoid ball its core filled with a dilatant compound, mounted in a suitable way, the ball is preferably made from a rubber or similar material with elastic properties.
The ball would preferably appear smooth, but could equally have serrations, nodules, or other surface characteristics to improve its performance.
It is preferable that the ball be manufactured from brightly coloured high visibility material to act as warnings and draw attention to the safety aspect of the invention, along with any holder required for retaining and fixing the ball in place but when required to be inconspicuous can equally blend in with the surrounding environment.
Embodiments of the invention will now be described by way of example and with reference to the accompanying drawings.
Figure 1 Shows a cross sectional view through the vertical elements of a bi-folding door, with the device filled into both hinged leafs. The dilatant compound having been activated preventing full closure and therefore entrapment.
Figure 2 Shows a cross sectional view through the vertical elements of a bi-folding door, with the device filled into both hinged leafs, Figure 3 Shows a cross sectional view through the vertical elements of a standard door configuration when fully open and a hemispherical pressure plate fitted to the door leaf.
Figure 4 Shows a cross sectional view through the vertical elements of a standard door configuration and a hemispherical pressure plate has been filled to the door leaf. The dilatants compound has been activated preventing full closure and therefore entrapment Figure 5 Shows a cross sectional view through the vertical elements of a standard door configuration when fully closed, and the soft deformation of the dilatants compound inside the ball arrangement.
Figure 6 Shows a cross sectional view through the vertical elements of a standard door configuration when fully open.
Figure 7 Shows a cross sectional view through the vertical elements of a bi-folding door with the device filled to one element only.
Figure 8 Shows a cross section of one design for the ball arrangement and holder in side elevation.
Figure 9 Shows a front elevation of one design for the ball arrangement and holder.
Figure 10 Shows a cross sectional view through a sandwich arrangement of materials, where a multiple of balls are used to create a large impact surface.
Figure 11 Shows a cross sectional view through a traffic calming speed hump, where a multiple of balls are used to create a flexibie intelligent ramp.
Example I
Referring tofigures 1,2, 3,4, 5,6,718,9, This embodiment of the invention is to provide for the soft close of a door in normal use, but to prevent its accidental slamming which is when most injuries occur by collision or entrapment.
The present invention provides for a spherical, egg or ovoid ball (1) filled with a dilatant compound (2) and mounted in a suitable holder (3), to be placed between the door leaf (4) and the frame (7) at the hinged side (6), it could equally be fitted into either the door leaf or outer frame at this point, and provision could be made for it to be fitted to both.
Equally as in the case of bi-folding doors the invention could be fitted between each leaf at the hinge side (figures 1 and 2).
The ball (1) will ideally be made of rubber or alternatively any suitable material with similar elastic qualities and the dilatant compound filling the ball would be Dow Coming 3179, or a similar product Dilatant compound has along with its other characteristics a unique property of being pliable with the properties of a liquid in its natural state, but when shocked becomes almost solid.
By filling a hollow ball with the dilatant compound, the ball will have the characteristics of a soft almost malleable feel when manipulated slowly (figure 5), but when shocked will revert to a solid state becoming rigid and form a barrier which is difficult to crush (figure4) When placed in a door aperture at the hinge side, the ball will squash when the door is in normal use and closed softly, providing a small resistance to closure, and therefore a positive close (figure 5), but will become solid if shocked as would be the case of a door slamming preventing full closure of the door (5), and therefore protecting from injury by entrapment or collision.
To further improve the performance and versatility of the device, provision may be made to attach to the opposite side of fitment a pressure plate (8) to significantly increase the loading at the point of contact, therefore speeding up the reaction time of the dilatant compound.
The addition of this pressure plate (8) would enable adjustment of the pressure required to operate the door leaf in normal use, and determine the gap remaining when shocked and rigid (5).
The pressure plate (8) could be made from any material equal or greater in density to the external material of the ball, but would preferably be made from a dense plastic fixed in place using normal attachment methods.
One or more units could be fitted along the hinged joint to achieve maximum results, preferably at each hinge itself.
The device in this embodiment can equally be fitted to a sliding door configuration, commonly known as patio doors, tilt and turn or multi-track doors, where the ball and its housing is fitted to either the sliding door, or the fixed frame, or both, replacing the traditional rubber stops used to arrest the linear motion of the door.
The device in this embodiment provides for fitting on new product, and can also be retro-fitted to existing installations by way of suitable fixing.
Whilst it is envisaged that the device in this embodiment would be sunken into the outer frame (7) or leaf (4) to enable the majority of the device to remain from view, it could equally be surface mounted if required.
The device in this embodiment is suitable to be fixed too or into any type of material, such as U PVC, Wood, Aluminium, Steel, or any composite material thereof.
This embodiment of the invention also allows for the fitment to any hinged object where the risk of injury or damage might occur from slamming and would include windows, hatches, lids, and covers this list not being exhaustive.
Further examples of the inventions possible uses are given below, and whilst not intended to encompass all of the possible applications the examples given are apposite to the principle of the invention.
Example 2
Referring to figure 10 In this embodiment of the invention the ball is not retained within a housing or holder, but is a multiple of balls held in place by being sandwiched between two surfaces (10) The material of the two surfaces (10) can be solid or flexible, and can be made up of one of more layers of material.
In producing this embodiment a sheet can be formed, with the ability to absorb impact, whilst remaining flexible under normal loads.
Exarnple 3 Referring to figure 11 In this embodiment of the invention the ball is not retained within a housing or holder, and is not required to be fixed in place. Multiple balls are distributed within a flexible extrusion or series of mouldings (9) preferably in the shape of a "D" and form a speed restriction or calming measure for roads and road ways.
As the dilatant compound (2) has a known force applied to cause it to deform and stay malleable, by introducing a vehicle at speed the shock element of the wheels striking the external "D" section (9) will cause the dilatant compound (2) inside the ball (1) to react and become solid, therefore the hump to remain solid and in so doing cause the vehicle to slow down to pass over. ajpe4
In this embodiment of the invention a ball (1) is used as a type of non-lethal projectile. The dilatant compound (2) reacting with the force required to launch the projectile and remaining rigid for the purpose. Upon striking an object or person the projectile will only impart a percentage of its energy, and therefore minimise the risk of serious injury or damage by striking or collision.
Example 5
In this embodiment of the invention the ball (1) is reproduced to represent any type of ball used in sport where the ball is struck with a club, bat or stick. In this embodiment the properties of the dilatants compound (2) will enhance the practice of the sport by giving similar characteristics to the current balls used, whilst reducing the distance and potential damage caused by the original balls.

Claims (28)

  1. Claims 1. A sealed hollow ball is filled with a Non Newtonian Material known as a dilatant compound.
  2. 2. The Ball according to claim 1 may be made from rubber or similar material of elastic qualities.
  3. 3. The Ball according to claim I may be spherical. Egg or Ovoid in shape.
  4. 4. The ball according to claim 1 may be fitted into a suitable holder to retain and allow for fixing.
  5. 5. The holder according to claim 4 will be made from any suitable material such as steel, aluminium, or plastic so as to provide structure and fixing of the ball.
  6. 6. The ball and holder according to any preceding claims will be placed between a door Jam and leaf at the hinge side.
  7. 7. The ball and holder according to any preceding claims will be placed will be placed between a door leaf and door leaf at the hinge side as with bi-folding doors.
  8. 8. The ball and holder according to any preceding claims can be fitted in series along the hinge side of any aperture.
  9. 9. The ball and holder according to any preceding claims may allow for the fixing of a pressure plate opposite to its self.
  10. 10. The pressure plate according to claim 9 can be made of any material equal or denser to that of the balls extemal material.
  11. 11. The pressure plate according to claim 9 can be hemispherical or any other shape so as to provide suitable pressure.
  12. 12. The pressure plate according to claim 9 could be adjustable to allow for different gaps to be achieved.
  13. 13. The ball and Holder according to any preceding claims could be of different diameters to allow for different size gaps to be maintained.
  14. 14. The ball according to any preceding claims could be coloured to provide additional warning
  15. 15. The holder according to any preceding claims could be coloured to provide additional warning
  16. 16. The pressure plate according to any preceding claims could be coloured to provide additional warning.
  17. 17. The ball according to any preceding claims could be smooth or have nodules or serrations to improve performance.
  18. 18. The ball according to any preceding claims can be removed and replaced to allow for normal wear.
  19. 19. The ball and holder according to any preceding claims can be surface mounted or sunken.
  20. 20. The ball and holder according to any preceding claims can be fitted in the longitudinal axes at the hinge side
  21. 21. The ball and holder according to any preceding claims could be fitted to any hinged object, Lids, Gates, Hatches, covers
  22. 22. The ball and holder according to any preceding claims can be used to arrest the linear Motion for a door, such as Patio, tilt and turn Sliding Doors
  23. 23. The ball and holder according to any preceding claims could be filled in any place where a buffer might be considered
  24. 24. The ball and holder according to any preceding claims can be retro-fit or new build.
  25. 25. The Ball according to any preceding claims can be used as a stand alone device
  26. 26. The Ball according to any preceding claims can be sandwiched between materials to form a sheet.
  27. 27. The Ball according to any preceding claims can be used loosely and fill an object such a speed hump.
  28. 28. The Ball according to any preceding claims can be fired from a weapon and become a non-lethal projectile.
GB1108686.5A 2011-05-24 2011-05-24 Energy absorbing ball filled with dilatant compound Withdrawn GB2491135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1108686.5A GB2491135A (en) 2011-05-24 2011-05-24 Energy absorbing ball filled with dilatant compound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1108686.5A GB2491135A (en) 2011-05-24 2011-05-24 Energy absorbing ball filled with dilatant compound

Publications (2)

Publication Number Publication Date
GB201108686D0 GB201108686D0 (en) 2011-07-06
GB2491135A true GB2491135A (en) 2012-11-28

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104404897A (en) * 2014-12-02 2015-03-11 四川大学 Intelligent deceleration strip
CN104480877A (en) * 2014-12-02 2015-04-01 四川大学 Intelligent deceleration strip based on shear thickening fluid
GB2523260A (en) * 2014-02-14 2015-08-19 Kason Ind Inc Hinge
CN105772557A (en) * 2016-04-29 2016-07-20 苏州大学 High-pressure dynamic sealing device
EP3126707A1 (en) * 2014-03-31 2017-02-08 Grass GmbH & Co. KG Device for influencing the movement of a furniture part and a furniture part
CN109518619A (en) * 2019-01-11 2019-03-26 姚森 Town road safety speed reducing belt based on non-Newton fluid characteristic
CN110048264A (en) * 2019-04-03 2019-07-23 张新生 A kind of switch socket of novel embedded ceramic tile metope

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114032802B (en) * 2021-12-08 2023-05-26 西安石油大学 Buffer deceleration strip based on nano-fluidic system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB408287A (en) * 1932-10-06 1934-04-06 William Wilson Hamill Hinge mounting of doors, particularly automobile doors
WO2007139973A1 (en) * 2006-05-26 2007-12-06 University Of Virginia Patent Foundation Viscoelastic and dilatant composition, device and method of use and manufacture
CN201310257Y (en) * 2008-08-23 2009-09-16 梁熙光 Movable door shield
JP2011018508A (en) * 2009-07-08 2011-01-27 Seiko Epson Corp Electrooptic device and electronic equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB408287A (en) * 1932-10-06 1934-04-06 William Wilson Hamill Hinge mounting of doors, particularly automobile doors
WO2007139973A1 (en) * 2006-05-26 2007-12-06 University Of Virginia Patent Foundation Viscoelastic and dilatant composition, device and method of use and manufacture
CN201310257Y (en) * 2008-08-23 2009-09-16 梁熙光 Movable door shield
JP2011018508A (en) * 2009-07-08 2011-01-27 Seiko Epson Corp Electrooptic device and electronic equipment

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2523260A (en) * 2014-02-14 2015-08-19 Kason Ind Inc Hinge
GB2523260B (en) * 2014-02-14 2020-07-01 Kason Ind Inc Hinge
EP3126707A1 (en) * 2014-03-31 2017-02-08 Grass GmbH & Co. KG Device for influencing the movement of a furniture part and a furniture part
US20170037669A1 (en) * 2014-03-31 2017-02-09 Grass Gmbh & Co. Kg Device for influencing the movement of a furniture part, and a furniture part
CN106414879A (en) * 2014-03-31 2017-02-15 格拉斯有限及两合公司 Device for influencing the movement of furniture part and furniture part
US9890574B2 (en) * 2014-03-31 2018-02-13 Grass Gmbh & Co. Kg Device for influencing the movement of a furniture part, and a furniture part
CN106414879B (en) * 2014-03-31 2018-08-17 格拉斯有限及两合公司 The device and furniture parts of movement for influencing furniture parts
CN104404897A (en) * 2014-12-02 2015-03-11 四川大学 Intelligent deceleration strip
CN104480877A (en) * 2014-12-02 2015-04-01 四川大学 Intelligent deceleration strip based on shear thickening fluid
CN105772557A (en) * 2016-04-29 2016-07-20 苏州大学 High-pressure dynamic sealing device
CN109518619A (en) * 2019-01-11 2019-03-26 姚森 Town road safety speed reducing belt based on non-Newton fluid characteristic
CN110048264A (en) * 2019-04-03 2019-07-23 张新生 A kind of switch socket of novel embedded ceramic tile metope

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