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US3749430A Expired / Lapsed US ⏱️ 0.0 years remaining

Lock assembly for holding extensible outrigger leg in retracted position

Assignee: PITMAN MANUFACTURING COMPANY Inc (PITMAN) A CORP OF
•
Filing: 1970-12-21
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Granted: 1973-07-31
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Expires: 1990-12-21
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Abstract

Abstract An extensible outrigger for vehicles having a power-actuated inner member shiftable within an outer member to a groundengaging position is provided with a lock to releasably hold the inner member during over-the-road travel and storage. The lock includes a flexible plate secured to the inner member near the outer end of the latter and a compressible pad carried by the plate between the latter and the inner member. The arrangement is such as to not only provide a wedging action but a holding effect because of the compressibility of the pad. Undue wear is avoided by location of the lock so as to become effective only as the retracted position of the outrigger is approached.

Inventors

  • 👤 R Jenkins

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 21:18
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/10; F16B7/105; B; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78; B66C23/80; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32467; Y10T403/32475; Y10T403/32483; Y10T403/60; Y10T403/606; Y10T403/70; Y10T403/7075; Y10T403/7077

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 265 words
In combination with an extensible assembly having an elongated, outer, tubular member and an elongated, inner member having one end telescoped within a first end of the outer member and the opposite end projecting therefrom, structure for releasably holding the inner member fully telescoped within the outer member and against reciprocation comprising: an independently functional, elongated, yieldable leaf spring component mounted on said inner member adjacent said opposite end thereof and adapted to move completely out of contact with said outer tubular member as said inner member reciprocates from its fully retracted position, said component being further disposed to resist flexure toward said inner member in response to the application of an external force on said component directed toward said inner member by said outer member, said component being fixed at one end thereof to said inner member and diverging progressively radially outwardly away from said inner member in a direction away from said first end; and an independently functional, mechanically and structurally distinct, compressible pad on said leaf spring component adjacent the opposite end thereof and on the side facing said inner member for resisting compression toward said inner member the opposite side of said component being smooth so as to provide a good bearing surface whereby, upon the application of such external force to the component directed toward said inner member when the inner member is moved to its retracted position relative to the outer member, said pad and said component cooperate to prevent unintentional movement of the inner member out of said retracted position by combining their individual resistances to such force.
Claim 2
Dependent Claim 265 words
In combination with an extensible assembly having an elongated, outer, tubular member and an elongated, inner member having one end telescoped within a first end of the outer member and the opposite end projecting therefrom, structure for releasably holding the inner member fully telescoped within the outer member and against reciprocation comprising: an independently functional, elongated, yieldable leaf spring component mounted on said inner member adjacent said opposite end thereof and adapted to move completely out of contact with said outer tubular member as said inner member reciprocates from its fully retracted position, said component being further disposed to resist flexure toward said inner member in response to the application of an external force on said component directed toward said inner member by said outer member, said component being fixed at one end thereof to said inner member and diverging progressively radially outwardly away from said inner member in a direction away from said first end; and an independently functional, mechanically and structurally distinct, compressible pad on said leaf spring component adjacent the opposite end thereof and on the side facing said inner member for resisting compression toward said inner member the opposite side of said component being smooth so as to provide a good bearing surface whereby, upon the application of such external force to the component directed toward said inner member when the inner member is moved to its retracted position relative to the outer member, said pad and said component cooperate to prevent unintentional movement of the inner member out of said retracted position by combining their individual resistances to such force.
Claim 3
Dependent Claim 54 words
The invention as claimed in claim 1, wherein said component is oriented to cause the external force of said outer member to be applied along said component progressively closer to the opposite end thereof as said inner member approaches its retracted position, thereby effecting a progressively stronger holding action as said position is approached.

References Cited (Backward Citations)

US1328488A Cited
US1536929A Cited
US1541280A Cited
US2220346A Cited
US2179415A Cited
US2344425A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-30 1977-01-29 1977-07-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-30 1981-01-29 1981-07-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-30 1985-01-29 1985-07-31 $7700.00 Window Closed / Lapsed

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