Patent US4593734A successfully refreshed from Google Patents.
US4593734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame routing apparatus
Assignee: Individual
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Filing: 1984-09-04
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Granted: 1986-06-10
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Expires: 2004-09-04
Abstract
Abstract A special router for cutting an L-shaped groove in elongated frame members has an elongated cutter stem and an axis about which the stem is rotatable; the stem has substantially parallelogram cross sections in planes normal to that axis; and a cutter head is provided at the end of the stem and integral therewith, the head also having substantially prallelogram cross sections in planes normal to that axis. Further, the router head has generally outwardly convex outer surfaces and opposite flat sides intersecting said curved outer surfaces. The router is movable laterally to cut L-shaped grooves in the frame members, which are adapted to have their grooved ends joined by an L-shaped bracket receivable into the grooves to hold the members in L-shaped assembly.
Inventors
- 👤 Robert S. Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:29
CPC Classifications
A; A47; A47G; A47G1/00; A47G1/06; A47G1/10; A47G1/101; B; B27; B27F; B27F1/00; B27F1/005; B27G; B27G13/00; B27G13/12; B27G13/14; F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/24; F16B5/00; F16B5/0004; F16B5/0032; F16B5/0052; A47B; A47B2230/00; A47B2230/0055; A47B2230/0062; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/1946; Y10T407/1948
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
In a router for cutting an L-shaped groove in elongated frame members adapted to have their ends joined in L-shaped assembly by an L-shaped bracket, (a) an elongated cutter stem having an axis about which the stem is rotatable, the stem having substantially parallelogram cross sections in planes normal to said axis, and (b) a cutter head at the end of the stem and integral therewith, the head also having substantially parallelogram cross sections in planes normal to said axis, (c) said head forming generally outwardly convex outer surfaces and opposite flat sides intersecting said curved outer surfaces.
Claim 2
Dependent Claim
98 words
In a router for cutting an L-shaped groove in elongated frame members adapted to have their ends joined in L-shaped assembly by an L-shaped bracket, (a) an elongated cutter stem having an axis about which the stem is rotatable, the stem having substantially parallelogram cross sections in planes normal to said axis, and (b) a cutter head at the end of the stem and integral therewith, the head also having substantially parallelogram cross sections in planes normal to said axis, (c) said head forming generally outwardly convex outer surfaces and opposite flat sides intersecting said curved outer surfaces.
Claim 3
Dependent Claim
19 words
The router of claim 1 wherein said head parallelogram cross sections are larger than said stem parallelogram cross sections.
Claim 4
Dependent Claim
22 words
The router of claim 2 wherein said stem parallelogram cross sections and said head parallelogram cross sections have substantially parallel corresponding sides.
Claim 5
Dependent Claim
29 words
The router of claim 2 wherein said stem parallelogram cross sections have two parallel opposite sides which are coincident with two parallel opposite sides of said head cross sections.
Claim 6
Dependent Claim
22 words
The router of claim 1 wherein the stem forms opposite flat outer sides which merge with said head opposite flat outer sides.
Claim 7
Dependent Claim
16 words
The router of claim 5 wherein the head has a flat terminal remote from the stem.
Claim 8
Dependent Claim
138 words
The combination that includes: (a) a router for cutting an L-shaped groove in two elongated frame members adapted to have their ends joined in L-shaped assembly by an L-shaped bracket, and including (i) an elongated cutter stem having an axis about which the stem is rotatable, the stem having substantially parallelogram cross sections in planes normal to said axis, and (ii) a cutter head at the end of the stem and integral therewith, the head also having substantially parallelogram cross sections in planes normal to said axis, (b) means to rotate the router about said axis extending longitudinally, (c) means to hold said two frame members in parallel, longitudinally elongated, laterally spaced relation, to be cut by said router head and stem as the router is displaced laterally relative to said frame member ends presented to said router.
Claim 9
Dependent Claim
138 words
The combination that includes: (a) a router for cutting an L-shaped groove in two elongated frame members adapted to have their ends joined in L-shaped assembly by an L-shaped bracket, and including (i) an elongated cutter stem having an axis about which the stem is rotatable, the stem having substantially parallelogram cross sections in planes normal to said axis, and (ii) a cutter head at the end of the stem and integral therewith, the head also having substantially parallelogram cross sections in planes normal to said axis, (b) means to rotate the router about said axis extending longitudinally, (c) means to hold said two frame members in parallel, longitudinally elongated, laterally spaced relation, to be cut by said router head and stem as the router is displaced laterally relative to said frame member ends presented to said router.
Claim 10
Dependent Claim
27 words
The combination of claim 7 wherein said (c) means includes a base having spaced shoulders to position said frame members, and member moldings associated with said base.
Claim 11
Dependent Claim
38 words
The combination of claim 7 including stops to limit said lateral displacement of the router relative to the frame member ends, the router stem axis extending parallel to length dimensions of the two frame members, at all times.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |