Table saw with ratchet mechanism
First Claim
1. A table saw comprising:
- a work-piece support surface;
a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface;
a first ratchet member operatively connected to the swing arm assembly;
a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed;
a latch pin movable between a first latch pin position whereat the swing arm assembly is maintained at the first swing arm position and a second latch pin position whereat the swing arm assembly is not maintained at the first swing arm position; and
an actuating device configured to transfer a first force to the latch pin to bias the latch pin in a direction toward the second latch position before applying any force to the swing arm assembly, and, after transferring the first force, further configured to transfer a second force to the swing arm assembly.
1 Assignment
0 Petitions
Accused Products
Abstract
A table saw in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a first ratchet member operatively connected to the swing arm assembly, and a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed.
110 Citations
15 Claims
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1. A table saw comprising:
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a work-piece support surface; a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface; a first ratchet member operatively connected to the swing arm assembly; a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed; a latch pin movable between a first latch pin position whereat the swing arm assembly is maintained at the first swing arm position and a second latch pin position whereat the swing arm assembly is not maintained at the first swing arm position; and an actuating device configured to transfer a first force to the latch pin to bias the latch pin in a direction toward the second latch position before applying any force to the swing arm assembly, and, after transferring the first force, further configured to transfer a second force to the swing arm assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A table saw comprising:
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a work-piece support surface; a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface; an actuating device configured to transfer a force to the swing arm assembly to accelerate the swing arm assembly in a direction toward the second swing arm position; a control system configured to control the actuating device; a first ratchet member positioned on a swing arm assembly housing at a location closer to a pivot axis of the swing arm assembly than a location of the swing arm assembly at which the shaping device is supported; and a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed. - View Dependent Claims (10, 11)
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12. A table saw comprising:
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a work-piece support surface; a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface; an actuating device configured to transfer a force to the swing arm assembly to accelerate the swing arm assembly in a direction toward the second swing arm position; a control system configured to control the actuating device; a first ratchet member fixedly attached to a power shaft about which the swing arm assembly pivots along the swing path; and a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed. - View Dependent Claims (13, 14, 15)
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Specification