Railway crossing gate assembly, components therefor and methods of making the same
First Claim
1. In a crossing gate arm assembly rotatably mounted on a crossing gate operating mechanism, said crossing gate operating mechanism moving said crossing gate arm assembly in a plane of movement from a raised, substantially vertical storage position to a lowered substantially horizontal guarding position, the improvement wherein said crossing gate arm assembly comprises a plurality of generally tubular members, wherein the generally tubular end member has one end telescopically engagable within and affixed to at least a portion of at least one other generally tubular member, said end tubular member having both narrow side edges of a free end removed inwardly a minor distance thus leaving only a remaining segment of face plates to impart flexibility to said free end transverse to said plane of movement to prevent damage to said crossing gate arm.
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Accused Products
Abstract
A crossing gate arm comprises at least two generally tubular members having one end engagable with a portion of a crossing gate assembly wherein the opposite free end of the crossing gate arm has a part of one tubular member removed to impart flexibility to the free end.
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Citations
19 Claims
- 1. In a crossing gate arm assembly rotatably mounted on a crossing gate operating mechanism, said crossing gate operating mechanism moving said crossing gate arm assembly in a plane of movement from a raised, substantially vertical storage position to a lowered substantially horizontal guarding position, the improvement wherein said crossing gate arm assembly comprises a plurality of generally tubular members, wherein the generally tubular end member has one end telescopically engagable within and affixed to at least a portion of at least one other generally tubular member, said end tubular member having both narrow side edges of a free end removed inwardly a minor distance thus leaving only a remaining segment of face plates to impart flexibility to said free end transverse to said plane of movement to prevent damage to said crossing gate arm.
- 15. A crossing gate arm comprises at least one generally tubular member, wherein a generally tubular end member thereof has one end engagable within and affixed to a portion of at least one other generally tubular member and an opposite end of said generally tubular end member having a minor part of both narrow side edges of said tubular end member removed inwardly from the free end thereof leaving remaining segments without support thus imparting flexibility to said opposite end.
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19. In a crossing gate arm assembly rotatably mounted on a crossing gate operating mechanism, said crossing gate operating mechanism moving said crossing gate arm assembly in a plane of movement from a raised storage position to a substantially horizontal guarding position, said crossing gate arm comprising at least three generally tubular members of substantially equal length but progressively smaller cross section wherein an end tubular member has one end telescopically engaged within and affixed to at least a portion of a generally tubular insulating member, said tubular insulating member having an end telescopically engaged within at least a portion of a generally tubular alternate mounting member, the improvement wherein said end tubular member has a flexible free end created by removing a minor part of narrow sidewalls thereof inwardly from said free end thus rendering remaining vertical walls independently flexible and wherein said end, insulating and alternate mounting tubular members are longitudinally extendable and affixable together in any length from the length of one of said members plus said free end to a fully extended length equal to the sum of the lengths of said end, insulating and alternate mounting tubular members.
Specification