US3818769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for repeated tracing various patterns
Assignee: Dow Chemical Co
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Filing: 1972-10-30
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Granted: 1974-06-25
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Expires: 1992-10-30
Abstract
Abstract Apparatus capable of repeatedly tracing a programmed path at constant velocity, and useful for conveying glue applicator heads, cutting or welding tools or devices, and the like. Such apparatus can comprise, as an example, an X-Y table (see FIG. 4) including a platform 35 slidable on a first pair of rods 36 and 38 for reverse movement in the X diretion, and a second pair of rods 60 and 62 slidably carried by platform 35 for reverse movement in the Y direction. A cam 76 is rotatably fixed to 76 35 and operates through cam followers to reversibly drive platform 35 and rods 60 and 62 such that a mounting shaft 72 fixed to the latter, moves with a direction and velocity comprising the vector sum of the movements of platform 35 and rods 60 and 62. Shaft 72, on which multiple glue applicator heads 26 or the like can be mounted, thereby repeatedly traces a certain path P dependent on the configuration of cam 76.
Inventors
- 👤 R Tigner
- 👤 L Mounts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:49
CPC Classifications
B; B27; B27G; B27G11/00; B23; B23K; B23K9/00; B23K9/12; B23K9/127; B23K9/1272; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/56; B23Q1/60; B23Q1/62; B23Q1/621; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/341; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/20; Y10T74/20012; Y10T74/20201
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
298 words
Apparatus for repeatedly describing a certain path, and comprising a first rotatable cam means, a first pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with the center of revolution of said first cam means to define a first axis, said first cam means being cooperable with said first pair of cam followers for supplying positive reciprocal motion parallel said first axis responsive to rotation of said first cam means, a second rotatable cam means having its center of revolution common with that of said first cam means, a second pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with said center of revolution to define a second axis extending normal to said first axis, said second cam means being cooperable with said second pair of cam followers to supply positive reciprocal motion parallel said second axis responsive to rotation of said second cam means, means to rotate said first and second cam means at an essentially constant angular velocity, means to translate the reciprocal motions along said first and second axis into the vector sum thereof to describe said path, said first and second cam means and the cam followers associated therewith being described respectively by the equation: Z A + Z'' A 180 a constant wherein: Z the distance between the center of revolution of the first or second cam means, as applies, and the center of a cam follower associated therewith; Z'' the distance between the center of revolution of the first or second cam means, as applies, and the center of the opposite cam follower associated therewith; and < A any specified angle on the first or second cam means, as applies, from 0* to 360*.
Claim 2
Dependent Claim
298 words
Apparatus for repeatedly describing a certain path, and comprising a first rotatable cam means, a first pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with the center of revolution of said first cam means to define a first axis, said first cam means being cooperable with said first pair of cam followers for supplying positive reciprocal motion parallel said first axis responsive to rotation of said first cam means, a second rotatable cam means having its center of revolution common with that of said first cam means, a second pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with said center of revolution to define a second axis extending normal to said first axis, said second cam means being cooperable with said second pair of cam followers to supply positive reciprocal motion parallel said second axis responsive to rotation of said second cam means, means to rotate said first and second cam means at an essentially constant angular velocity, means to translate the reciprocal motions along said first and second axis into the vector sum thereof to describe said path, said first and second cam means and the cam followers associated therewith being described respectively by the equation: Z A + Z'' A 180 a constant wherein: Z the distance between the center of revolution of the first or second cam means, as applies, and the center of a cam follower associated therewith; Z'' the distance between the center of revolution of the first or second cam means, as applies, and the center of the opposite cam follower associated therewith; and < A any specified angle on the first or second cam means, as applies, from 0* to 360*.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1 wherein said translating means comprises an X-Y table means.
Claim 4
Dependent Claim
21 words
The apparatus of claim 2 wherein Z A of the first cam means equals Z A of the second cam means.
Claim 5
Dependent Claim
27 words
The apparatus of claim 2 wherein the first and second cam means comprise a single cam which commonly operates said first and second pairs of cam followers.
Claim 6
Dependent Claim
36 words
The apparatus of claim 1 wherein said first and second cam means are described, in addition, by the equation: d1/degree of rotation of the cam means a constant wherein: d1 the vector movement about said path.
Claim 7
Dependent Claim
36 words
The apparatus of claim 1 wherein said center of revolution is generally near the dynamic center of mass of the moving parts of said apparatus created responsive to rotation of said first and second cam means.
Claim 8
Dependent Claim
21 words
The apparatus of claim 6 wherein Z A of the first cam means equals Z A of the second cam means.
Claim 9
Dependent Claim
44 words
The apparatus of claim 1 wherein said center of revolution is substantially adjacent to or within the path described by the moving dynamic center of mass of the moving parts of said apparatus created responsive to rotation of said first and second cam means.
Claim 10
Dependent Claim
200 words
Apparatus for repeatedly describing a certain path and comprising a rotatable cam means, a first pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with the center of revolution of the cam means to define a first axis, a second pair of cam followers spaced a fixed distance apart and disposed along a second axis which extends normal to said first axis, said second axis passing through said center of revolution which is disposed intermediate the second pair of cam followers, said cam means being cooperable with said cam followers to supply positive driven motion in the four directions defined by said first and second axis responsive to the rotation of said cam means, means to translate the motions along said first and second axis into the vector sum thereof, said cam means being described by the equation: Z A + Z'' A 180 constant wherein: Z the distance between said center of revolution and the center of a cam follower; Z'' the distance between said center of revolution and the center of the opposite cam follower; and < A any specified angle on the cam means from 0* to 360*.
Claim 11
Dependent Claim
200 words
Apparatus for repeatedly describing a certain path and comprising a rotatable cam means, a first pair of cam followers spaced a fixed distance apart and disposed on opposite sides of and in alignment with the center of revolution of the cam means to define a first axis, a second pair of cam followers spaced a fixed distance apart and disposed along a second axis which extends normal to said first axis, said second axis passing through said center of revolution which is disposed intermediate the second pair of cam followers, said cam means being cooperable with said cam followers to supply positive driven motion in the four directions defined by said first and second axis responsive to the rotation of said cam means, means to translate the motions along said first and second axis into the vector sum thereof, said cam means being described by the equation: Z A + Z'' A 180 constant wherein: Z the distance between said center of revolution and the center of a cam follower; Z'' the distance between said center of revolution and the center of the opposite cam follower; and < A any specified angle on the cam means from 0* to 360*.
Claim 12
Dependent Claim
18 words
The apparatus of claim 9 including means to drive said cam means at an essentially constant angular velocity.
Claim 13
Dependent Claim
14 words
The apparatus of claim 10 wherein said translating means comprises an X-Y table means.
Claim 14
Dependent Claim
33 words
The apparatus of claim 11 wherein said cam means is described, in addition, by the equation: d1/degree of rotation of the cam means a constant wherein: d1 the vector movement about said path.
Claim 15
Dependent Claim
40 words
The apparatus of claim 12 wherein the center of revolution of the cam means is generally near the dynamic center of mass of the moving parts of said apparatus created responsive to rotation of said first and second cam means.
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |