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US4456041: Apparatus for filling and sealing a lubricant reservoir

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Filing Information

Inventor(s) Walter Grilli · Aldo Crotti · Orlando Berselli ·
Assignee(s) Italtractor I.T.M. S.p.A. ·
Attorney/Agent(s) Browdy and Neimark ·
Primary Examiner Bell, Jr.; Houston S. ·
Application Number US6262507
Filing date 05/11/1981
Issue date 06/26/1984
Predicted expiration date 06/26/2001
U.S. Classifications 141/329  · 53/264  · 184/109  · 53/324  ·
International Classifications B65B 728  ·
Kind CodeA
International Classifications 1411-12;65;66;19;329;330 ·
Foreign Priority IT40053A80 - 06/26/1980 ·
11 Claims, No Drawings


Abstract

The invention's application is suited in particular to the lubricated turning pairs of crawler tracks. It makes provision for the sealing of the lubricant reservoir by means of an elastomer plug, and for the introduction of a needle into and through the plug. The needle serves to effect evacuation of any existing air from within the reservoir, and the subsequent introduction of lubricating oil. The needle is then withdrawn from the plug which, by virtue of the elastic properties of the elastomer, automatically re-encloses the puncture produced by the needle.

Independent Claims | See all claims (11)

  1. 1. Apparatus for filling and sealing a lubricant reservoir having interior wall means and located within the pivot element of lubricated turning pairs, in particular track link pivots and crawler track rollers, of the type includinga plug fashioned from elastomeric material and insertable into the mouth of the lubricant reservoir to seal said reservoir,needle means for injecting lubricant into the reservoir insertable through the plug in such a way that its extremity gains access to the reservoir interior, said needle means being withdrawn from the plug following introduction of the lubricant into the reservoir, the plug and the needle means being embodied such that the puncture produced by the latter re-encloses upon withdrawal of the needle means by virtue of the elastic quality of the material from which the plug is made, the improvement comprising:said plug being compressed upon insertion into said reservoir mouth, the outer surface of said plug defining means for preventing shifting of said plug in said reservoir mouth during insertion, or withdrawal of, said needle means into, or from, said inserted plug,said plug being retained in said reservoir mouth solely by the interaction of said reservoir wall means with said shifting preventing means of said plug outer surface and the radial forces resulting from said compression of said plug after insertion of the latter in said reservoir mouth.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US2855006 NAT PHOENIX IND INC Geisler Oct 1958

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
DE112401Apr 1975

Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
IT8040053 ITALTRACTOR GRILLI WALTER et al. Jun 1980
EP0043354 ITALTRACTOR MECCANICA ITM S.p.A. Walter Grilli et al. Dec 1986
DE3175750 ITALTRACTOR GRILLI WALTER et al. Feb 1987
IT1194952 ITALTRACTOR GRILLI WALTER et al. Sep 1988