Patent US4260877A successfully refreshed from Google Patents.
US4260877A
Expired / Lapsed
US
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Area measuring apparatus for attachment to a linear conveyor
Assignee: Individual
•
Filing: 1978-10-12
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Granted: 1981-04-07
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Expires: 1998-10-12
Abstract
Abstract An area measuring attachment for a linear conveyor is disclosed. The device is particularly adapted for area measurement of long, narrow objects having an irregular height and angular orientation, for example lumber, and particularly rough-cut lumber. The device includes an array of independently suspended, generally vertically oriented, freely rotating wheels. The wheels are equally spaced in a direction transverse to the direction of travel of the conveyor. Frictional contact between the wheels and the objects passing on the conveyor define the width and length of the objects. The wheels are pivotable about a first axis, generally transverse to the direction of travel of the conveyor, for accommodating objects having a warp or an irregular height. The wheels are also pivotable about a second axis, generally parallel to the direction of travel of the conveyor, for accommodating objects having irregular angular orientations. The wheels, in conjunction with their suspension apparatus, are adapted to produce electrical pulses representative of wheel rotation, and digital electronics are included for counting such pulses and generating an output in terms representative of the area or board footage of the objects passing on the conveyor.
Inventors
- 👤 Daniel E. Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:59
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/26; G01B7/00; G01B7/32
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
83 words
In an area-measuring apparatus for attachment to a linear conveyor, the apparatus being of the type having an array of length and width-measuring wheels and means for summing the rotation of the wheels, the apparatus being particularly adapted for the area measurement of long narrow objects having an irregular height and angular orientation, the improvement comprising means for pivoting each of the wheels about first and second generally orthogonal axis for accommodating objects on the conveyor having irregular heights and angular orientations, respectively.
Claim 2
Dependent Claim
83 words
In an area-measuring apparatus for attachment to a linear conveyor, the apparatus being of the type having an array of length and width-measuring wheels and means for summing the rotation of the wheels, the apparatus being particularly adapted for the area measurement of long narrow objects having an irregular height and angular orientation, the improvement comprising means for pivoting each of the wheels about first and second generally orthogonal axis for accommodating objects on the conveyor having irregular heights and angular orientations, respectively.
Claim 3
Dependent Claim
94 words
In an area-measuring apparatus for attachment to a linear conveyor, the apparatus being of the type having an array of length and width-measuring wheels and means for counting the rotation of the wheels, the apparatus including first means for vertically displacing the wheels to accommodate objects having an irregular height, the apparatus being particularly adapted for the area measurement of long narrow objects, the improvement comprising second means for pivoting each of the wheels about an axis generally parallel to the direction of travel of the conveyor, for accommodating objects having irregular angular orientations.
Claim 4
Dependent Claim
94 words
In an area-measuring apparatus for attachment to a linear conveyor, the apparatus being of the type having an array of length and width-measuring wheels and means for counting the rotation of the wheels, the apparatus including first means for vertically displacing the wheels to accommodate objects having an irregular height, the apparatus being particularly adapted for the area measurement of long narrow objects, the improvement comprising second means for pivoting each of the wheels about an axis generally parallel to the direction of travel of the conveyor, for accommodating objects having irregular angular orientations.
Claim 5
Dependent Claim
27 words
The area-measuring apparatus of claim 2 wherein said second means for pivoting the wheels further includes means for spring biasing the wheels in a generally vertical orientation.
Claim 6
Dependent Claim
166 words
An area-measuring apparatus, the apparatus being adapted for attachment to a linear conveyor for area measurement of lumber, comprising: an array of length and width-measuring wheels; a plurality of support members for pivoting said wheels about an axis generally transverse to the direction of travel of the conveyor, one end of each of said support members being journaled in a stationary support, the opposite end of each of said support members being adapted to support one of said wheels; a plurality of carriers for pivoting said wheels about an axis generally parallel to the direction of travel of the conveyor, one of said wheels being journaled in each of said carriers, each of said carriers being journaled in one of said support members; means for generating electrical pulses associated with each of said wheels, the number of pulses generated being proportional to rotation of said wheels; and means for counting electrical pulses and generating an output representative of the area of objects passing on the conveyor.
Claim 7
Dependent Claim
166 words
An area-measuring apparatus, the apparatus being adapted for attachment to a linear conveyor for area measurement of lumber, comprising: an array of length and width-measuring wheels; a plurality of support members for pivoting said wheels about an axis generally transverse to the direction of travel of the conveyor, one end of each of said support members being journaled in a stationary support, the opposite end of each of said support members being adapted to support one of said wheels; a plurality of carriers for pivoting said wheels about an axis generally parallel to the direction of travel of the conveyor, one of said wheels being journaled in each of said carriers, each of said carriers being journaled in one of said support members; means for generating electrical pulses associated with each of said wheels, the number of pulses generated being proportional to rotation of said wheels; and means for counting electrical pulses and generating an output representative of the area of objects passing on the conveyor.
Claim 8
Dependent Claim
107 words
The area-measuring apparatus of claim 4 wherein said means for counting electric pulses comprises: a common bus coupled to each of said means for generating electrical pulses; a pulse detector connected to said common bus, said pulse detector generating amplified and separated output pulses equal in number to the pulses received by said common bus; a divider connected to receive the output of said pulse detector, said divider generating output pulses reduced in number by a predetermined factor; a summer for compiling a summation of the output pulses generated by said divider; and means for displaying the summation representing the area of lumber passing on the conveyor.
Claim 9
Dependent Claim
144 words
An area-measuring apparatus, the apparatus being adapted for attachment to a linear conveyor, comprising: an array of independently suspended, generally vertically oriented, rotatable wheels, said wheels being equally spaced in a direction transverse to the direction of travel of the conveyor; first means for pivoting said wheels about a first axis, said first axis extending generally transverse to the direction of travel of the conveyor, for accommodating objects having an irregular height; second means for pivoting said wheels about a second axis, said second axis being generally orthogonal to said first axis and generally parallel to the direction of travel of the conveyor, for accommodating objects having irregular angular orientations; and means for monitoring the rotation of said wheels and generating an output representative of the area of an object rotating certain of said wheels as it passes them while moving along the conveyor.
Claim 10
Dependent Claim
144 words
An area-measuring apparatus, the apparatus being adapted for attachment to a linear conveyor, comprising: an array of independently suspended, generally vertically oriented, rotatable wheels, said wheels being equally spaced in a direction transverse to the direction of travel of the conveyor; first means for pivoting said wheels about a first axis, said first axis extending generally transverse to the direction of travel of the conveyor, for accommodating objects having an irregular height; second means for pivoting said wheels about a second axis, said second axis being generally orthogonal to said first axis and generally parallel to the direction of travel of the conveyor, for accommodating objects having irregular angular orientations; and means for monitoring the rotation of said wheels and generating an output representative of the area of an object rotating certain of said wheels as it passes them while moving along the conveyor.
Claim 11
Dependent Claim
35 words
The area-measuring apparatus of claim 6 wherein said means for monitoring includes means for generating electrical pulses associated with each of said wheels, the number of pulses generated being proportional to rotation of said wheels.
Claim 12
Dependent Claim
24 words
The area-measuring apparatus of claim 7 wherein the output of each of said means for generating electrical pulses is directed to a common bus.
Claim 13
Dependent Claim
64 words
The area-measuring apparatus of claim 8 wherein said means for generating electrical pulses comprises: a switch associated with each of said wheels, said switches being actuated by rotation of said wheels, each of said switches being connected in parallel to said common bus; a capacitor in series with each of said switches and ground; and a DC power supply connected to said common bus.
Claim 14
Dependent Claim
42 words
The area-measuring apparatus of claim 9 wherein said means for generating electrical pulses further includes: a diode connected in series with said capacitor and disposed between said common bus and said capacitor; and a bleed resistor connected in parallel with said capacitor.
Claim 15
Dependent Claim
39 words
The area-measuring apparatus of claim 8 wherein said means for monitoring further includes a pulse detector connected to said common bus, said pulse detector generating an output representative of the total number of pulses received by said common bus.
Claim 16
Dependent Claim
63 words
The area-measuring apparatus of claim 11 wherein said means for monitoring further includes a divider, said divider connected to receive the output of said pulse detector, said divider generating output pulses reduced in number by a factor defined by the number of pulses counted per rotation by said means for generating electrical pulses and by the circumference and transverse spacing of said wheels.
Claim 17
Dependent Claim
27 words
The area-measuring apparatus of claim 12 wherein said means for monitoring further includes a summer for compiling a summation of the output pulses generated by said divider.
Claim 18
Dependent Claim
40 words
The area-measuring apparatus of claim 13 wherein said means for monitoring further includes a digital display for displaying the summation of the output of said divider, the summation being equal to the area of the objects passing on the conveyor.
Claim 19
Dependent Claim
51 words
The area-measuring apparatus of claim 7 wherein said means for generating electrical pulses comprises: a magnet carried by each of said wheels; and a magnetically actuable switch adjacent to each of said wheels, said switch closing briefly to generate an electrical pulse of short duration for each rotation of said wheels.
Claim 20
Dependent Claim
80 words
The area-measuring apparatus of claim 6 wherein said first means for pivoting said wheels comprises; a stationary support structure extending transversely across the conveyor; and a plurality of generally L-shaped support members, one end of each of said support members being journaled in said stationary support, the opposite end of each of said support members extending downward and being adapted to support one of said wheels, said wheels thereby being gravity biased into engagement with objects passing on the conveyor.
Claim 21
Dependent Claim
58 words
The area-measuring apparatus of claim 16 wherein said second means for pivoting said wheels comprises: a plurality of generally U-shaped carriers one of said wheels being journaled in each of said carriers; said carriers being journaled in the downward extending ends of said L-shaped support members; and means for spring biasing said wheels in a generally vertical orientation.
Claim 22
Dependent Claim
71 words
The area-measuring apparatus of claim 6 wherein said first and second means for pivoting said wheels comprises: a stationary support structure extending transversely across said conveyor; a plurality of posts disposed parallel to said second axis, said posts being journaled in said support structure; a pin disposed on each of said posts said pins being disposed parallel to said first axis; and a wheel carrier pivotable about each of said pins.
Claim 23
Dependent Claim
74 words
The area-measuring apparatus of claim 18 further including means for spring biasing said wheels in a generally vertical direction comprising: a coil spring compressed between each of said pins and said support structure; said posts being slidably and rotatably received by said support structure; a cam follower disposed on each of said parts; and a cam surface cooperating with each of said cam followers to spring bias said wheels in a generally vertical direction.
Claim 24
Dependent Claim
34 words
The area-measuring apparatus of claim 6 wherein said wheels are provided with a width much smaller than the transverse spacing of said wheels, whereby error due to wheel overlap on narrow objects is minimized.
Claim 25
Dependent Claim
40 words
The area-measuring apparatus of claim 6 wherein said wheels are provided with a circumference larger than the unit of length to be measured by each rotation of said wheels to compensate for error resulting from wheel overlap on narrow objects.
Claim 26
Dependent Claim
40 words
The area-measuring apparatus of claim 6 further including stop means for braking further rotation of said wheels when said wheels are no longer in contact with an object on a conveyor, thereby minimizing error due to free-wheeling of said wheels.
References Cited (Backward Citations)
US485946A
Cited
US1704386A
Cited
US738580A
Cited
US2821301A
Cited
US2885787A
Cited
US3406601A
Cited
US3516539A
Cited
US3717414A
Cited
US3899831A
Cited
US4012943A
Cited
US4149318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |