Barrier assembly

In a barrier assembly for selectively preventing and allowing travel along a path including frame means situated beside said path, at least one elongated barrier arm having a blocking position projecting laterally from said frame means across said path for preventing travel past said barrier arm along said path when said barrier arm is in said blocking position, and connecting means connecting said barrier arm to said frame means for swinging movement with respect thereto about a substantially horizontal axis between said blocking position extending across said path and a non-blocking position where said barrier arm extends substantially vertically along said frame means to be situated with the latter beside said path to permit travel there along, the improvement comprising,

• said frame means comprises a first channel enclosure to which a barrier arm is connected by said connecting means, said first channel enclosure being constituted by a member having a substantially C-shaped cross-section;
• and
• said barrier assembly including safety release means for permitting said barrier arm to pivot or fold about a vertical axis when a force exceeding a predetermined force is applied to said barrier arm, said release means comprising a double acting hinge arrangement including a pair of hinges fixing respective lateral edge regions of said first channel enclosure to a fixed member, each of said hinges including a shear member, whereby said barrier arm will pivot or fold about a vertical axis when a force exceeding a predetermined force is applied to either the forward or rearward side of said barrier arm.

In a barrier assembly for selectively preventing and allowing travel along a path including frame means situated beside said path, at least one elongated barrier arm having a blocking position projecting laterally from said frame means across said path for preventing travel past said barrier arm along said path when said barrier arm is in said blocking position, and connecting means connecting said barrier arm to said frame means for swinging movement with respect thereto about a substantially horizontal axis between said blocking position extending across said path and a non-blocking position where said barrier arm extends substantially vertically along said frame means to be situated with the latter beside said path to permit travel there along, the improvement comprising:

• said frame means comprises a first channel enclosure to which a barrier arm is connected by said connecting means, said first channel enclosure being constituted by a member having a substantially C-shaped cross-section;
• a second channel enclosure connected to said first channel enclosure to which said barrier arm is connected, said first and second channel enclosures each comprising a member having a pair of side walls and a web interconnecting said side walls at an edge thereof, and wherein said first and second channel members are connected with respective side walls being contiguous with each other with respective aligned slots being formed in said side walls;
• and
• drive means for automatically swinging said barrier arm between said blocking and non-blocking positions, said drive means being housed within said second channel enclosure and coupled to said barrier arm through said aligned slots.

In a barrier assembly for selectively preventing and allowing travel along a path including frame means situated beside said path, at least one elongated barrier arm having a blocking position projecting laterally from said frame means across said path for preventing travel past said barrier arm along said path when said barrier arm is in said blocking position, and connecting means connecting said barrier arm to said frame means for swinging movement with respect thereto about a substantially horizontal axis between said blocking position extending across said path and a non-blocking position where said barrier arm extends substantially vertically along said frame means to be situated with the latter beside said path to permit travel there along, the improvement comprising:

• said frame means of said barrier assembly comprises first and second channel enclosures, each having a pair of side walls and an interconnecting web defining a substantially C-shaped cross-section, and a pair of barrier arms, each being connected to a respective one of said first and second channel enclosures by said connecting means, said first and second channel enclosures being coupled to each other in back-to-back relationship with their respective webs being opposed and contiguous to each other, and wherein said first and second channel enclosures are coupled to each other by a pair of hinge means, each hinge means interconnecting respective side regions of said opposed webs, said hinge means including shear pin means.

In a barrier assembly for selectively preventing and allowing travel along a path including frame means situated beside said path, at least one elongated barrier arm having a blocking position projecting laterally from said frame means across said path for preventing travel past said barrier arm along said path when said barrier arm is in said blocking position, and connecting means connecting said barrier arm to said frame means for swinging movement with respect thereto about a substantially horizontal axis between said blocking position extending across said path and a non-blocking position where said barrier arm extends substantially vertically along said frame means to be situated with the latter beside said path to permit travel there along, the improvement comprising:

• said frame means of said barrier assembly comprises first and second channel enclosures, each having a pair of walls and an interconnecting web defining a substantially C-shaped cross-section, and a pair of barrier arms, each being connected to a respective one of said first and second channel enclosures by said connecting means, said first and second channel enclosures being coupled to each other;
• and
• wherein said first and second channel enclosures are connected to third and fourth channel enclosures respectively in back-to-back relationship with their respective webs being opposed and contiguous to each other, said third and fourth channel enclosures forming part of said frame means and housing drive means for swinging respective ones of said barrier arms connected to said first and second channel enclosures, whereby said first and third channel enclosures and associated barrier and drive means constitute a first barrier subassembly, while said second and fourth channel enclosures and associated barrier arm and drive means constitute a second barrier subassembly, said first and second barrier subassemblies being coupled to each other such that the respective barrier arms extend in opposite directions when in their blocking positions.

In a barrier assembly for selectively preventing and allowing travel along a path including frame means situated beside said path, at least one elongated barrier arm having a blocking position projecting laterally from said frame means across said path for preventing travel past said barrier arm along said path when said barrier arm is in said blocking position, and connecting means connecting said barrier arm to said frame means for swinging movement with respect thereto about a substantially horizontal axis between said blocking position extending across said path and a non-blocking position where said barrier arm extends substantially vertically along said frame means to be situated with the latter beside said path to permit travel there along, the improvement comprising:

• said frame means comprise first and second channel enclosures, each having a pair of side walls and an interconnecting web defining a substantially C-shaped cross-section, a barrier arm connected to said first channel enclosure by said connecting means and drive means for swinging said barrier arm being housed in said second channel enclosure, said first and second channel enclosures being coupled to each other in back-to-back relationship with their respective webs being opposed and contiguous to each other;
• and
• wherein said drive means are interconnected to said barrier arm by a pair of links pivotally interconnected to each other about a substantially vertical axis when said barrier arm is in its blocking position, and wherein said first and second channel enclosures are coupled to each other by a pair of hinge means, each hinge means interconnecting said regions of said opposed webs, said hinge means including shear pin means.