Paper fastener compressor
First Claim
1. A paper fastener compressor for attachment to the prongs of a fastener base, the compressor comprising:
- an elongate compressor bar having holes defined therein adapted for passage of the prongs therethrough, the compressor bar having opposed longitudinally extending first and second rolled edges, the first rolled edge defining a hinge channel and the second rolled edge defining a latch channel;
a flat, elongate cover having opposed longitudinally extending first and second rolled edges, the first rolled edge forming a hinge pintle slidably and rotatably disposed in the hinge channel, the second rolled edge forming a latch slidable in the latch channel;
a cover retaining tab extending into the hinge channel, the hinge pintle having an elongate axial movement slot defined therein splitting the pintle into first and second hinge pintle portions disposed on opposite sides of the retaining tab, the pintle being axially slidable in the hinge channel for the length of the slot, the retaining tab blocking the pintle from sliding out of the hinge channel, the latch and the latch channel having corresponding gaps defined therein so that the cover is rotatable about the pintle to an open position normal to the compressor bar and rotatable to a closed position with the latch aligned with the latch channel, the cover being slidable to releasably dispose the latch beneath the second rolled edge of the compressor bar; and
a lock tab having an open position disposed above the hinge channel to permit slidable movement of the pintle in the hinge channel, the lock tab being bendable into the channel at the end of the slot opposite the cover retainer tab in a closed position blocking slidable movement of the pintle in the hinge channel.
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Accused Products
Abstract
The paper fastener compressor assembly includes a compressor bar having two opposed passages therein for the insertion of the prongs of the compressor base therethrough. A movable cover is hinged to the compressor bar along a common edge, with the cover also sliding axially along the hinge line when closed. The assembly is installed by opening the cover and placing the compressor bar over the extended prongs of the base, and folding the prongs over atop the compressor bar. The cover is then closed over the folded prongs and slid into registry atop the compressor bar to secure the edge of the cover opposite its hinge edge to the compressor bar. A locking tab is provided along the hinge edge of the compressor bar. When the locking tab is crimped, axial movement of the cover is prevented, thus securing the assembly permanently and preventing alteration of the file.
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Citations
18 Claims
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1. A paper fastener compressor for attachment to the prongs of a fastener base, the compressor comprising:
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an elongate compressor bar having holes defined therein adapted for passage of the prongs therethrough, the compressor bar having opposed longitudinally extending first and second rolled edges, the first rolled edge defining a hinge channel and the second rolled edge defining a latch channel; a flat, elongate cover having opposed longitudinally extending first and second rolled edges, the first rolled edge forming a hinge pintle slidably and rotatably disposed in the hinge channel, the second rolled edge forming a latch slidable in the latch channel; a cover retaining tab extending into the hinge channel, the hinge pintle having an elongate axial movement slot defined therein splitting the pintle into first and second hinge pintle portions disposed on opposite sides of the retaining tab, the pintle being axially slidable in the hinge channel for the length of the slot, the retaining tab blocking the pintle from sliding out of the hinge channel, the latch and the latch channel having corresponding gaps defined therein so that the cover is rotatable about the pintle to an open position normal to the compressor bar and rotatable to a closed position with the latch aligned with the latch channel, the cover being slidable to releasably dispose the latch beneath the second rolled edge of the compressor bar; and a lock tab having an open position disposed above the hinge channel to permit slidable movement of the pintle in the hinge channel, the lock tab being bendable into the channel at the end of the slot opposite the cover retainer tab in a closed position blocking slidable movement of the pintle in the hinge channel. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A paper fastener compressor assembly for attachment to the prongs of a base element, the compressor assembly comprising:
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an elongate compressor bar having mutually opposed first and second ends and a base prong passage disposed therethrough adjacent each of the ends, and mutually opposed first and second edges; an elongate cover having mutually opposed first and second ends and mutually opposed first and second edges, the first edge of the cover pivotally and slidably engaging the first edge of the compressor bar, and the second edge of the cover being selectively captured by the second edge of the compressor bar; a finger indentation disposed centrally in the cover, the finger indentation having mutually opposed, spaced apart first and second ends; a first plurality of raised finger friction ridges disposed adjacent the first end of the finger indentation; and a second plurality of raised finger friction ridges disposed adjacent the second end of the finger indentation. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A paper fastener compressor assembly for attachment to the prongs of a base element, the compressor assembly comprising:
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an elongate, anodized aluminum compressor bar having mutually opposed first and second ends with a base prong passage disposed therethrough adjacent each of the ends, and mutually opposed first and second edges; and an elongate, anodized aluminum cover having mutually opposed first and second ends and mutually opposed first and second edges, the first edge of the cover pivotally and slidably engaging the first edge of the compressor bar, and the second edge of the cover being selectively captured by the second edge of the compressor bar. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification