Patent US5761678A successfully refreshed from Google Patents.
Patent US5094654A successfully refreshed from Google Patents.
US5094654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swing saw
Assignee: Individual
•
Filing: 1991-01-07
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Granted: 1992-03-10
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Expires: 2011-01-07
Abstract
Abstract A swing saw for cutting logs to length prior to cutting into lumber or plywood veneer is provided with a rotary arbor shaft coupled to a secondary drive shaft through a drive chain, the secondary drive shaft being coupled to an electric drive motor through drive belts. The secondary drive shaft is supported on laterally spaced bearings which, in turn, are maintained parallel by adjustment screws mounting rotatable sprockets which are coupled together through a secondary chain by which adjustable rotation of one of the sprockets effects simultaneous adjustable rotation of the other sprocket to precisely the same degree and direction. The adjustment screws thus are moved longitudinally in the same direction and precisely the same distance, and therefore the axis of the secondary drive shaft is maintained precisely parallel to the axis of the arbor shaft. The secondary drive shaft is secured by clamp plates when adjusted. Both shafts are mounted on a hollow housing in which the drive chain is contained. The lower end of the housing is provided with a break-away plate which detaches upon impact of the drive chain in the event of breakage, to allow the chain to exit the housing.
Inventors
- 👤 Gregory S. Strom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:17
CPC Classifications
B; B23; B23D; B23D47/00; B23D47/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
In a device having an elongated shaft having a longitudinal axis and a support member for supporting the shaft, the combination therewith of a) a pair of laterally spaced bearings supporting the shaft, b) an elongated screw engaging each bearing and extending perpendicular to the longitudinal axis of the shaft, c) a sprocket engaging each screw and supported by said support member, and d) a chain interengaging the sprockets for effecting rotation of one sprocket simultaneously with and upon rotation of the other sprocket, e) whereby rotation of one sprocket effects movement of both bearings simultaneously in the same direction and the same distance perpendicular to the longitudinal axis of the shaft.
Claim 2
Dependent Claim
112 words
In a device having an elongated shaft having a longitudinal axis and a support member for supporting the shaft, the combination therewith of a) a pair of laterally spaced bearings supporting the shaft, b) an elongated screw engaging each bearing and extending perpendicular to the longitudinal axis of the shaft, c) a sprocket engaging each screw and supported by said support member, and d) a chain interengaging the sprockets for effecting rotation of one sprocket simultaneously with and upon rotation of the other sprocket, e) whereby rotation of one sprocket effects movement of both bearings simultaneously in the same direction and the same distance perpendicular to the longitudinal axis of the shaft.
Claim 3
Dependent Claim
29 words
The combination of claim 1 including clamp means releasably interengaging each, bearing and the support member for securing the bearing in a longitudinally adjusted position on the support member.
Claim 4
Dependent Claim
33 words
The combination of claim 2 wherein each screw is mounted on a different one of the clamp means for moving both clamp means and associated bearings by rotation of one of said sprockets.
Claim 5
Dependent Claim
39 words
The combination of claim 1 wherein the device includes a second shaft having a longitudinal axis and supported in fixed position on the support member with its longitudinal axis parallel to the longitudinal axis of the first said shaft.
Claim 6
Dependent Claim
54 words
The combination of claim 4 wherein the first and second shafts are supported for axial rotation, a drive motor is connected to one of the shafts for rotating said one shaft, and drive connecting means couples said one shaft to the other shaft for rotating said other shaft upon rotation of said one shaft.
Claim 7
Dependent Claim
117 words
In a device having an elongated support mounting a laterally extending drive shaft, a driven shaft spaced longitudinally from the drive shaft and disposed parallel thereto, and a drive chain interengaging the drive and driven shafts, the combination therewith of a) a pair of laterally spaced bearings supporting the drive shaft, b) an elongated screw engaging each bearing and extending in the longitudinal direction of the elongated support, c) a sprocket engaging each screw and supported by the elongated support, and d) a chain interengaging the sprockets for effecting rotation of one sprocket simultaneously with and upon rotation of the other sprocket, whereby rotation of the sprockets effects movement of the bearings longitudinally of the elongated support.
Claim 8
Dependent Claim
117 words
In a device having an elongated support mounting a laterally extending drive shaft, a driven shaft spaced longitudinally from the drive shaft and disposed parallel thereto, and a drive chain interengaging the drive and driven shafts, the combination therewith of a) a pair of laterally spaced bearings supporting the drive shaft, b) an elongated screw engaging each bearing and extending in the longitudinal direction of the elongated support, c) a sprocket engaging each screw and supported by the elongated support, and d) a chain interengaging the sprockets for effecting rotation of one sprocket simultaneously with and upon rotation of the other sprocket, whereby rotation of the sprockets effects movement of the bearings longitudinally of the elongated support.
Claim 9
Dependent Claim
29 words
The combination of claim 6 including clamp means releasably interengaging each bearing and the elongated support for securing the bearing in a longitudinally adjusted position on the elongated support.
Claim 10
Dependent Claim
33 words
The combination of claim 7 wherein each screw is mounted on a different one of the clamp means for moving both clamp means and associated bearing by rotation of one of said sprockets.
Claim 11
Dependent Claim
49 words
The combination of claim 6 wherein the elongated support comprises an elongated hollow housing, the drive shaft extends laterally through the housing, the chain interengaging the sprockets extends laterally through the housing, the driven shaft extends laterally through the housing, and the drive chain is contained within the housing.
Claim 12
Dependent Claim
64 words
The combination of claim 9 wherein a lower portion of the housing under the drive chain has an opening for exiting of the drive chain in the event of breakage of the drive chain, and a break-away cover secured to the housing and removably closing said opening, the break-away cover being arranged to detach from the housing upon impact of a broken drive chain.
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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |