Patent US4640386A successfully refreshed from Google Patents.
US4640386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folding utility horse
Assignee: Individual
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Filing: 1986-02-14
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Granted: 1987-02-03
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Expires: 2006-02-14
Abstract
Abstract A compactly folding sawhorse including a main beam and a pair of legs double pivoted thereto at each end thereof, and an assembly for aligning and securing the legs in their extended position forming a very stable and durable work platform.
Inventors
- 👤 James W. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:05
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/06
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
153 words
A folding utility horse comprising: (a) a main beam extending horizontally when the utility horse is in its set-up position; (b) a first pair of legs attached to and positioned at one end of the main beam; (c) a second pair of legs attached to and positioned at the other end of the main beam; (d) pivot means mounting each leg, the pivot means including: (1) a transverse mount extending outwardly from the main beam; (2) a cross shaft mounted pivotally substantially at right angles to the transverse mount; and (3) bearing means for mounting the leg pivotally on the cross shaft for pivotal movement along an axis substantially perpendicular to the axis of the pivot between the transverse mount and the cross shaft; (e) stop means for abutment by the leg when the leg is in its extended position; and (f) securing means for releasably fastening the leg in its extended position.
Claim 2
Dependent Claim
153 words
A folding utility horse comprising: (a) a main beam extending horizontally when the utility horse is in its set-up position; (b) a first pair of legs attached to and positioned at one end of the main beam; (c) a second pair of legs attached to and positioned at the other end of the main beam; (d) pivot means mounting each leg, the pivot means including: (1) a transverse mount extending outwardly from the main beam; (2) a cross shaft mounted pivotally substantially at right angles to the transverse mount; and (3) bearing means for mounting the leg pivotally on the cross shaft for pivotal movement along an axis substantially perpendicular to the axis of the pivot between the transverse mount and the cross shaft; (e) stop means for abutment by the leg when the leg is in its extended position; and (f) securing means for releasably fastening the leg in its extended position.
Claim 3
Dependent Claim
16 words
The folding utility horse of claim 1 wherein the main beam comprises a rectangular metal tube.
Claim 4
Dependent Claim
15 words
The folding utility horse of claim 2 further comprising end caps for the main beam.
Claim 5
Dependent Claim
23 words
The folding utility horse of claim 1 further comprising a wooden block attached along the top of the length of the main beam.
Claim 6
Dependent Claim
34 words
The folding utility horse of claim 1 wherein the legs are of channel material, the open channel of the second pair of legs being dimensioned to overlap the first pair of legs when folded.
Claim 7
Dependent Claim
34 words
The folding utility horse of claim 5 further comprising an alignment block attached to each side of the main beam and wherein the first pair of legs are configured to overlap the alignment block.
Claim 8
Dependent Claim
37 words
The folding utility horse of claim 5 further comprising feet on the ends of the legs, the feet of the first pair of legs extending inwardly, and the feet of the second pair of legs extending outwardly.
Claim 9
Dependent Claim
26 words
The folding utility horse of claim 1 further comprising latches between the main beam and the second pair of legs for securing the legs when folded.
Claim 10
Dependent Claim
25 words
The folding utility horse of claim 1 further comprising a handle attached to the bottom of the main beam for carrying upside down when folded.
Claim 11
Dependent Claim
35 words
The folding utility horse of claim 1 further comprising a cross brace attached to one of each of the pairs of legs midway along its length and being releasably engageable with the other associated leg.
Claim 12
Dependent Claim
13 words
The folding utility horse of claim 10 wherein the cross braces are telescopic.
Claim 13
Dependent Claim
54 words
The folding utility horse of claim 1 wherein the legs are pivoted to the cross shaft by an assembly including a bushing, a cylindrical spacer extending through the bushing and a bolt extending through and clamping the spacer to the cross shaft, the outside of the bushing bearing against a hole in the leg.
Claim 14
Dependent Claim
30 words
The folding utility horse of claim 1 wherein the stop means comprises an abutment attached to the main beam against which the side of the leg bears when set up.
Claim 15
Dependent Claim
28 words
The folding utility horse of claim 1 wherein the stop means comprises a bolt extending from the main beam which is overlapped by a hole in the leg.
Claim 16
Dependent Claim
35 words
The folding utility horse of claim 1 wherein the securing means comprises a bolt threaded into the main beam and extending through a hole in the leg and operable to be tightened against the leg.
Claim 17
Dependent Claim
63 words
The folding utility horse of claim 15 wherein the leg comprises a double sheet of material at its upper end through which is the hole that the bolt extends, and wherein the back sheet of material is slotted allowing the head of the bolt to bear thereagainst, while the front sheet of material is configured and dimensioned to accept and confine the head.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |