EP0528825A1 - Device containing a force-imparting means and equipped with safety means - Google Patents

Device containing a force-imparting means and equipped with safety means

Info

Publication number
EP0528825A1
EP0528825A1 EP19910908062 EP91908062A EP0528825A1 EP 0528825 A1 EP0528825 A1 EP 0528825A1 EP 19910908062 EP19910908062 EP 19910908062 EP 91908062 A EP91908062 A EP 91908062A EP 0528825 A1 EP0528825 A1 EP 0528825A1
Authority
EP
European Patent Office
Prior art keywords
plate
recesses
safety
tie rods
safety plate
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Withdrawn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
EP19910908062
Other languages
German (de)
French (fr)
Inventor
Michael Arnold 20 Hopetown Place Calvert
Christopher Paul 3 Beechwood Road Shrive
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.)
Prime Actuator Control Systems Ltd
Original Assignee
Prime Actuator Control Systems Ltd
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 Prime Actuator Control Systems Ltd filed Critical Prime Actuator Control Systems Ltd
Publication of EP0528825A1 publication Critical patent/EP0528825A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/002—Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
    • 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
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
    • 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
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P3/00—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body
    • F16P3/08—Safety devices acting in conjunction with the control or operation of a machine; Control arrangements requiring the simultaneous use of two or more parts of the body in connection with the locking of doors, covers, guards, or like members giving access to moving machine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons

Definitions

  • This invention relates to a device containing force-imparting means and equipped with safety means.
  • Such a device is disclosed in WO 87/05986 and comprises a housing including an end plate, means for imparting a force and captive within the housing between the end plate and retaining means biased by the force imparting means, a plurality of screw-threaded tie rods and nuts holding the end plate in assembly in the housing, and safety means comprising a safety plate within the housing between the end plate and the retaining means but clear of the latter at its closest approach to the end plate, the safety plate being fast on a shaft rotatable in the end plate and adapted to be turned from outside the housing, the safety plate and the tie rods having cooperating formations which in one angular position of the safety plate permit movement of the safety plate relative to the tie rods in a direction longitudinally thereof but in another angular position of the safety plate prevents such movement of the safety plate.
  • the cooperating formations are constituted by keyhole-shaped openings in the safety plate and through which openings the respective tie rods extend, and safety collars on the tie rods.
  • the safety collars In the one angular position of the safety plate the safety collars can pass through the respective keyhole-shaped openings.
  • the safety collars cannot pass through the respective keyhole-shaped openings.
  • the provision of the keyhole-shaped openings in the safety plate and the safety collars on the tie rods imposes limitations on the degree to which the transverse dimensions of the housing can be reduced and thereby renders the device unsuitable in installations where space is at a premium.
  • An object of the present invention is to obviate or mitigate the above disadvantages.
  • the device of the invention is characterised in that the cooperating formations of the safety plate and the tie rods are constituted by a peripheral edge of the safety plate which edge is interrupted by recesses, one for each tie rod, and recesses .formed in what are the inner sides of the tie rods when in mutually assembled relationship, whereby in the one angular position of the safety plate the tie rods can pass through their respective recesses in the said edge of the safety plate, but in the other angular position of the safety plate the recesses in the plate are out of alignment with the tie rods and the unrelieved edge of the safety plate is receivable in the recesses in the tie rods.
  • the peripheral edge of the safety plate is tapered and has flats therein adjacent to the recesses in the edge and the recesses in the tie rods are ramped, whereby when the safety plate is in the other angular position during dismantling of the device and the force in the force-imparting means has not been relieved, interengagement of the tapered edge of the safety plate or the flats in such edge with the ramps in the recesses of the tie rods causes the tie rods to become wedged between the safety plate and the end plate.
  • the shaft may have fast thereon a flange which lies against the outer side of the end plate and has recesses in its peripheral edge, which recesses are so disposed relative to the recesses in the edge of the safety plate
  • Fig 1 is an axial sectional view of a spring- containing device equipped with safety means and in the unlocked condition;
  • Fig 2 is similar to Fig 1 but in the locked condition
  • Fig 3 is a section on line Ill-Ill in Fig l;
  • Fig 4 is a section on line IV-IV in Fig 2;
  • Fig 5 is an end view of Fig 1;
  • Fig 6 is an end view of Fig 2; and
  • Fig 7 is similar to Fig 6 and also includes a nut- locking plate.
  • a spring-containing device comprises a housing which in turn comprises a cylindrical casing 1 to one end of which an end plate 2 is welded.
  • a ring 3 is welded to the other end of the casing 1 and the ring 3 seats on a plate 4 secured to a main unit generally indicated by reference numeral 5.
  • Suitably shaped, eg eccentric heads 6 of tie rods 7 are captive within recesses in the plate 4 so as to prevent rotation of the tie rods which extend through openings in a movable spring-retaining plate 8 and the end plate 2.
  • the tie rods 7 terminate in screw-threaded portions 9 receiving nuts 10.
  • a force-imparting means in the form of a compression spring 11 is captive within the housing between the end plate 2 and the plate 8.
  • a movable rod 12 of the main unit 5 is biased by the spring 11 via the plate 8.
  • the single spring 11 may be replaced by a plurality of compression springs equi-angularly spaced around and within the housing.
  • the device is equipped with safety means which comprises a safety plate 13 having a tapered peripheral edge 14 interrupted by recesses 15, one for each tie rod 7.
  • the edge 14 may have a flat machined therein adjacent to each recess 15.
  • the plate 13 is screwed on a shaft 16 and made fast thereon by dowels 17 or by any other keying means. Alternatively, the plate 13 may be welded on the shaft 16.
  • the shaft 16 is rotatable in the plate 2 and adapted to be turned from outside the housing at 18 where a hexagonal end is provided.
  • Each tie rod 7 has a ramped recess 19 formed therein on the inner side when the tie rods 17 are in their assembled relationship.
  • edge 14 of the safety plate 13 may be replaced by a planar annular shoulder for direct abutment with a shoulder in the recess 19, which replaces the ramp and lies in a plane normal to the axis of the tie rod 7.
  • the shaft 16 has fast thereon a flange 20 which lies against the outer side of the end plate 2 and has recesses 21 in its peripheral edge, one for each nut 10. Also in its peripheral edge the plate 20 has a further recess 22 which cooperates with a pin 23 outstanding from the plate 2 to determine two angular positions of the plate 13.
  • the tie rods 7 can pass through their respective recesses 15 in the edge of the plate 13. In this position, as shown in Fig 5, the nuts 10 cannot be applied to the screw-threaded portions 9 of the tie rods 7.
  • the recesses 15 are out of alignment with the tie rods 7 and the unrelieved edge 14 of the plate 13 is receivable in the recesses 19 in the tie rods 7. In this position, as shown in Fig 6, the nuts 10 can be removed from and applied to the screw-threaded portions 9 of the tie rods
  • a nut-locking plate 24 is removably applied about the exposed hexagonal end 18 of the shaft 16 and has flats which register with flats on the nuts 10 when the plate 13 is in the latter position.
  • the unrelieved edge 14 of the plate 13 is received in the recesses 19 in the tie rods 7, the nuts 10 are received in the recesses 21 in the edge of the flange 20 and the plate 24 is applied to lock the nuts 10.
  • the nuts 10 are removed and if there is no residual spring force remaining in the spring 11 there will be no resistance to turning the shaft 16, the flange 20 and the safety plate 13 so as to align the recesses 15 with the tie rods 7, whereupon dismantling can be completed.
  • the force-imparting means may be pneumatic, hydraulic, electrical and magnetic.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Clamps And Clips (AREA)

Abstract

Un dispositif à ressort comporte un boîtier comprenant une plaque terminale détachable (2). Une pluralité de tirants filetés (7) possèdent des écrous (10) servant à garder la plaque terminale (2) solidaire du boîtier. Une plaque de sûreté (13) est disposée à l'intérieur du boîtier et contre la plaque terminale (2) de sorte qu'elle ne gêne pas une plaque amovible de retenue du ressort (8) lorsqu'elle se trouve dans sa position la plus proche de la plaque terminale (2). La plaque de sûreté (13) est solidaire d'un arbre (15) qui peut tourner dans la plaque terminale (2) et qui est adapté (18) pour être tourné à partir de l'extérieur. Cette plaque de sûreté (13) possède des évidements (15) périphériques permettant le pasage de tirants (7) respectifs. Les tirants (7) possèdent des évidements (19) aptes à recevoir le bord non dépouillé (14) de la plaque de sûreté (13) lorsqu'ils se trouvent dans une position angulaire particulière afin d'empêcher un déplacement relatif longitudinal entre la plaque de sûreté (13) et les tirants (7).A spring device comprises a housing comprising a detachable end plate (2). A plurality of threaded tie rods (7) have nuts (10) serving to keep the end plate (2) integral with the housing. A safety plate (13) is arranged inside the housing and against the end plate (2) so that it does not interfere with a removable spring retaining plate (8) when it is in its position the closer to the end plate (2). The safety plate (13) is integral with a shaft (15) which can rotate in the end plate (2) and which is adapted (18) to be rotated from the outside. This security plate (13) has peripheral recesses (15) allowing the passage of respective tie rods (7). The tie rods (7) have recesses (19) capable of receiving the unstacked edge (14) of the safety plate (13) when they are in a particular angular position in order to prevent a relative longitudinal movement between the plate safety (13) and tie rods (7).

Description

Device Containing a Force-Imparting Means and Equipped with Safety Means
Description
This invention relates to a device containing force-imparting means and equipped with safety means.
Such a device is disclosed in WO 87/05986 and comprises a housing including an end plate, means for imparting a force and captive within the housing between the end plate and retaining means biased by the force imparting means, a plurality of screw-threaded tie rods and nuts holding the end plate in assembly in the housing, and safety means comprising a safety plate within the housing between the end plate and the retaining means but clear of the latter at its closest approach to the end plate, the safety plate being fast on a shaft rotatable in the end plate and adapted to be turned from outside the housing, the safety plate and the tie rods having cooperating formations which in one angular position of the safety plate permit movement of the safety plate relative to the tie rods in a direction longitudinally thereof but in another angular position of the safety plate prevents such movement of the safety plate.
In the device of the above-mentioned disclosure the cooperating formations are constituted by keyhole-shaped openings in the safety plate and through which openings the respective tie rods extend, and safety collars on the tie rods. In the one angular position of the safety plate the safety collars can pass through the respective keyhole-shaped openings. However in the other angular position of the safety plate the safety collars cannot pass through the respective keyhole-shaped openings. The provision of the keyhole-shaped openings in the safety plate and the safety collars on the tie rods imposes limitations on the degree to which the transverse dimensions of the housing can be reduced and thereby renders the device unsuitable in installations where space is at a premium.
An object of the present invention is to obviate or mitigate the above disadvantages.
Accordingly, the device of the invention is characterised in that the cooperating formations of the safety plate and the tie rods are constituted by a peripheral edge of the safety plate which edge is interrupted by recesses, one for each tie rod, and recesses .formed in what are the inner sides of the tie rods when in mutually assembled relationship, whereby in the one angular position of the safety plate the tie rods can pass through their respective recesses in the said edge of the safety plate, but in the other angular position of the safety plate the recesses in the plate are out of alignment with the tie rods and the unrelieved edge of the safety plate is receivable in the recesses in the tie rods.
Preferably the peripheral edge of the safety plate is tapered and has flats therein adjacent to the recesses in the edge and the recesses in the tie rods are ramped, whereby when the safety plate is in the other angular position during dismantling of the device and the force in the force-imparting means has not been relieved, interengagement of the tapered edge of the safety plate or the flats in such edge with the ramps in the recesses of the tie rods causes the tie rods to become wedged between the safety plate and the end plate.
The shaft may have fast thereon a flange which lies against the outer side of the end plate and has recesses in its peripheral edge, which recesses are so disposed relative to the recesses in the edge of the safety plate
SUBSTITUTESHEET that only when the safety plate is in the other angular position the nuts can be removed from and applied to the screw-threaded tie rods.
An embodiment of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Fig 1 is an axial sectional view of a spring- containing device equipped with safety means and in the unlocked condition;
Fig 2 is similar to Fig 1 but in the locked condition;
Fig 3 is a section on line Ill-Ill in Fig l; Fig 4 is a section on line IV-IV in Fig 2; Fig 5 is an end view of Fig 1; Fig 6 is an end view of Fig 2; and Fig 7 is similar to Fig 6 and also includes a nut- locking plate.
In the drawing a spring-containing device comprises a housing which in turn comprises a cylindrical casing 1 to one end of which an end plate 2 is welded. A ring 3 is welded to the other end of the casing 1 and the ring 3 seats on a plate 4 secured to a main unit generally indicated by reference numeral 5. Suitably shaped, eg eccentric heads 6 of tie rods 7 are captive within recesses in the plate 4 so as to prevent rotation of the tie rods which extend through openings in a movable spring-retaining plate 8 and the end plate 2. The tie rods 7 terminate in screw-threaded portions 9 receiving nuts 10. A force-imparting means in the form of a compression spring 11 is captive within the housing between the end plate 2 and the plate 8. A movable rod 12 of the main unit 5 is biased by the spring 11 via the plate 8. The single spring 11 may be replaced by a plurality of compression springs equi-angularly spaced around and within the housing.
SUBSTITUTE SHEET The device is equipped with safety means which comprises a safety plate 13 having a tapered peripheral edge 14 interrupted by recesses 15, one for each tie rod 7. The edge 14 may have a flat machined therein adjacent to each recess 15. The plate 13 is screwed on a shaft 16 and made fast thereon by dowels 17 or by any other keying means. Alternatively, the plate 13 may be welded on the shaft 16. The shaft 16 is rotatable in the plate 2 and adapted to be turned from outside the housing at 18 where a hexagonal end is provided. Each tie rod 7 has a ramped recess 19 formed therein on the inner side when the tie rods 17 are in their assembled relationship. In a modification the edge 14 of the safety plate 13 may be replaced by a planar annular shoulder for direct abutment with a shoulder in the recess 19, which replaces the ramp and lies in a plane normal to the axis of the tie rod 7. The shaft 16 has fast thereon a flange 20 which lies against the outer side of the end plate 2 and has recesses 21 in its peripheral edge, one for each nut 10. Also in its peripheral edge the plate 20 has a further recess 22 which cooperates with a pin 23 outstanding from the plate 2 to determine two angular positions of the plate 13.
In one angular position of the safety plate 13, as shown in Figs 1 and 3, the tie rods 7 can pass through their respective recesses 15 in the edge of the plate 13. In this position, as shown in Fig 5, the nuts 10 cannot be applied to the screw-threaded portions 9 of the tie rods 7. In the other angular position of the safety plate 13, as shown in Figs 2 and 4, the recesses 15 are out of alignment with the tie rods 7 and the unrelieved edge 14 of the plate 13 is receivable in the recesses 19 in the tie rods 7. In this position, as shown in Fig 6, the nuts 10 can be removed from and applied to the screw-threaded portions 9 of the tie rods
SUBSTITUTE SHEET 7. Also, as shown in Fig 7, a nut-locking plate 24 is removably applied about the exposed hexagonal end 18 of the shaft 16 and has flats which register with flats on the nuts 10 when the plate 13 is in the latter position.
When the device is properly assembled the unrelieved edge 14 of the plate 13 is received in the recesses 19 in the tie rods 7, the nuts 10 are received in the recesses 21 in the edge of the flange 20 and the plate 24 is applied to lock the nuts 10. In order to dismantle the device it is first necessary to remove the plate 24. Thereafter the nuts 10 are removed and if there is no residual spring force remaining in the spring 11 there will be no resistance to turning the shaft 16, the flange 20 and the safety plate 13 so as to align the recesses 15 with the tie rods 7, whereupon dismantling can be completed.
If however, there is a residual spring force remaining in the spring 11 after the nuts 10 are removed, the interengagement of the tapered edge 14 with the ramps of the recesses 19 wedges the tie rods 7 between the safety plate 13 and the end plate 2. This will be apparent, and particularly so if flats are machined in the edge 14, when attempting to turn the shaft 16, the flange 20 and the safety plate 13 in order to complete the dismantling. With the inclusion of flats in the tapered edge 14 there would be not only a friction and wedging action to overcome but also a camming action against the residual spring force. If there was a large residual spring force it would be difficult if not impossible to apply sufficient torque to the hexagonal end 18 to exercise the said camming action. In this case, further dismantling requires the end plate 2 to be pushed back a little so as to disengage to edge 14 or the flat therein from the recesses 19 so as to free the shaft 18 for turning.
SUBSTITUTE SHEET Conversely, when re-assembling the device the safety plate 13 must be initially in its unlocked position so that the tie rods 7 can pass through the recesses 15. However, in this position the flange 20 prevents the application of the nuts 10 to the portions 9 of the tie rods 7. Thus, once the recesses 19 in the tie rods 7 are aligned with edge 14, the flange 20 and the safety plate 13 are turned to the locked position. In this position the unrelieved edge 14 can be allowed to seat in the recesses 19 with any spring forces held captive preparatory to further assembly. Also in this position the recesses 21 permit the nuts 10 to be applied. " When the nuts are fully tightened the edge 14 is no longer seated in the recesses 19 and finally the plate 24 is applied and removably secured to the end 18 so as to lock the nuts 10.
Instead of a mechanical spring, the force-imparting means may be pneumatic, hydraulic, electrical and magnetic.
SUBSTITUTESHEET

Claims

Claims 1. A device containing force-imparting means and equipped with safety means, the device comprising a housing including an end plate (2) , means (11) for imparting a force and captive within the housing between the end plate (2) and retaining means (8) biased by the force imparting means(11), a plurality of screw-threaded tie rods (7) and nuts (10) holding the end plate (2) in assembly in the housing, and safety means comprising a safety plate (13) within the housing between the end plate (2) and the retaining means (8) but clear of the latter at its closest approach to the end plate (2) the safety plate (13) being first on a shaft (16) rotatable in the end plate (2) and adapted to be turned from outside the housing, the safety plate (13) and the tie rods (7) having co-operating formations (15, 19) which in one angular position of the safety plate (13) permit movement of the safety plate (13) relative to the tie rods (7) in a direction longitudinally thereof but in another angular * position of the safety plate (13) prevents such movement of the safety plate 13, characterised in that the co¬ operating formation of the safety plate (13) and the tie rods (7) are constituted by a peripheral edge (14) of the safety plate (13) which edge (14) is interrupted by recesses (15) , one for each tie rod (7) and recesses (19) formed in what are the inner sides of the tie rod (7) when in mutually assembled relationship, whereby in the one angular position of the safety plate (13) the tie rods (7) can pass through their respective recesses (15) in the said edge (14) of the safety plate (13) , but in the other angular position of the safety plate (13) the recesses (15) in the plate (13) are out of alignment with the tie rods (7) and the unrelieved edge (14) of the safety plate (13) is receivable in the recesses (19) in the tie rods (7).
2. A device according to claim 1, characterised in that the peripheral edge (14) of the safety plate (13) is tapered and has flats therein adjacent to the recesses (15) in the edge (14) and the recesses (19) in the tie
SUBSTITUTESHEET (15) in the edge (14) and the recesses (19) in the tie rods (7) are ramped, whereby when the safety plate (13) is in the other angular position during dismantling of the device and the force in the force-imparting means (11) has not been relieved, interengagement of the tapered edge
(14) of the safety plate
(13) or the flats in such edge (14) with the ramps in the recesses (19) of the tie rods (7) causes the tie rods (7) to become wedged between the safety plate (13) and the end plate (2) .
3. A device according to claim 1 or 2, characterised in that the shaft (16) has fast thereon a flange (20) which lies against the outer side of the end plate (2) and has recesses (21) in its peripheral edge, which recesses (21) are so disposed relative to the recesses (15) in the edge
(14) of the safety plate (13) that only when the safety plate (13) is in the other angular position the nuts (10) can be removed from and applied to the screw-threaded tie rods (7) .
4. A device according to any preceding claim, characterised in that a nut-locking plate (24) is removably keyed to the shaft (16) for rotation therewith and has flats thereon for registering with flats on the nuts (10) when the safety plate (13) is in the other angular position.
EP19910908062 1990-05-03 1991-04-18 Device containing a force-imparting means and equipped with safety means Withdrawn EP0528825A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909009971A GB9009971D0 (en) 1990-05-03 1990-05-03 Device containing a force-imparting means and equipped with safety means
GB9009971 1990-05-03

Publications (1)

Publication Number Publication Date
EP0528825A1 true EP0528825A1 (en) 1993-03-03

Family

ID=10675421

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910908062 Withdrawn EP0528825A1 (en) 1990-05-03 1991-04-18 Device containing a force-imparting means and equipped with safety means

Country Status (4)

Country Link
EP (1) EP0528825A1 (en)
FI (1) FI924898A0 (en)
GB (1) GB9009971D0 (en)
WO (1) WO1991017385A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI100559B (en) * 1996-02-26 1997-12-31 Abb Transmit Oy Method and arrangement for vacuum locking of a gas-filled device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE900783C (en) * 1942-07-28 1954-01-04 Allg Feuerloescher Ag Closure for an extinguishing agent container from which the extinguishing agent is expelled under pressure
GB2044387B (en) * 1979-03-08 1983-05-11 Rodwell Scient Instr Ltd Autoclaves

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9117385A1 *

Also Published As

Publication number Publication date
GB9009971D0 (en) 1990-06-27
WO1991017385A1 (en) 1991-11-14
FI924898A (en) 1992-10-28
FI924898A0 (en) 1992-10-28

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