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Gas-operated spring

A pneumatic spring, pressurized gas technology, applied in the direction of spring, spring/shock absorber, spring/shock absorber design features, etc.

Active Publication Date: 2016-02-10
SPECIAL SPRINGS SRL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although this pneumatic spring with overtravel works very well and is widely accepted in the market, it still has an aspect that can be improved related to the visibility of the fact that the overtravel has come into play
[0011] In fact, if an overtravel condition has occurred, the spring can appear to be in a perfectly good condition, but part of the gas escapes in a controlled manner and thus the operation of the spring is no longer what it expects

Method used

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Examples

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Embodiment Construction

[0030] Referring to the figures, a pneumatic spring according to the invention is indicated generally with the reference numeral 10 .

[0031] Such pneumatic springs 10 are of the following types:

[0032] - a tubular containment sleeve 11,

[0033] - end face 12,

[0034] - the opposite annular portion 13 for closing the tubular sleeve 11 and for the passage of the piston rod 14,

[0035] - Piston rod 14 arranged so as to pass through ring portion 13 .

[0036] A chamber 15 for pressurized gas is delimited between the tubular sleeve 11 , the end face 12 , the annular passage portion 13 of the piston rod 14 and the piston rod 14 .

[0037] In this embodiment of the invention, which should be understood as non-limitative, the pneumatic spring 10 also includes an overtravel safety device 16 .

[0038] The invention is characterized in that it comprises means 17 for clearly indicating that overtravel of the piston rod 14 has occurred.

[0039] In particular, in the present e...

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Abstract

A gas-operated spring (10) with overtravel safety device, comprising: a tubular containment jacket (11), an end face (12), an opposite annular portion (13) for closing the tubular jacket and for the passage of a piston rod (14), a piston rod (14) arranged so as to pass through the annular portion (13), a chamber for pressurized gas (15) being defined between the tubular jacket, the end face, the annular portion and the piston rod. The gas-operated spring (10) comprises means (17) for clearly indicating that overtravel for the piston rod (14) has occurred.

Description

technical field [0001] The invention relates to a pneumatic spring. Background technique [0002] Pneumatic springs are usually delimited by a tubular gas containing sleeve which is sealingly closed at one end by an end face provided with a valve for filling the gas and at the other end by a head part which Perforated to provide passage for the piston rod, which translates within the sleeve; the sleeve, end face and head portion delimit the travel space of the piston, which together with the sleeve and end face define a gas compression and expansion chamber. [0003] Such pneumatic springs are also commonly, but not exclusively, used in situations such as the use of moulds, press molding machines and the like, where they can be subjected to situations of high internal pressure or shocks with press or mould-related parts, such that They are susceptible to damage; this damage can render the pneumatic spring unusable, necessitating replacement and necessitating the shutdown of...

Claims

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Application Information

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IPC IPC(8): F16F9/02F16F9/32F16F9/58
CPCF16F2230/0047F16F9/0218
Inventor 奥古斯托·卡佩勒亚历山德罗·卡佩勒丹特·卡佩勒
Owner SPECIAL SPRINGS SRL
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