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US4871623A
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Sheet-member containing a plurality of elongated enclosed electrodeposited channels and method
Assignee: 3M Co
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Filing: 1988-02-19
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Granted: 1989-10-03
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Expires: 2008-02-19
Abstract
Abstract A sheet member and a method for constructing the sheet member. The sheet member includes a plurality of elongated, enclosed channels formed by electrodeposition.
Inventors
- 👤 Timothy L. Hoopman
- 👤 Dee L. Johnson
- 👤 Harlan L. Krinke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:11
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52; F; F28; F28F; F28F13/00; F28F13/18; F28F13/185; C25; C25D; C25D1/00; C25D1/02; C25D1/08; F28F2275/00; F28F2275/14; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12292; Y10T428/12479
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
51 words
An article for circulating fluids, comprising: (a) a sheet member having opposing major surfaces; and (b) a plurality of elongated, enclosed electroformed channels extending through said sheet member between said opposing major surfaces for the circulation of fluids through each of said channels, said channels having a predetermined cross sectional shape.
Claim 2
Dependent Claim
51 words
An article for circulating fluids, comprising: (a) a sheet member having opposing major surfaces; and (b) a plurality of elongated, enclosed electroformed channels extending through said sheet member between said opposing major surfaces for the circulation of fluids through each of said channels, said channels having a predetermined cross sectional shape.
Claim 3
Dependent Claim
23 words
The article of claim 1, wherein each adjacent pair of said channels are joined at an undulating boundary extending through said sheet member.
Claim 4
Dependent Claim
22 words
The article of claim 1, wherein said channels are parallel and uniformly spaced with respect to each other within said sheet member.
Claim 5
Dependent Claim
27 words
The article of claim 1, wherein one of said major surfaces of said sheet member includes a plurality of projections, each projection containing one of said channels.
Claim 6
Dependent Claim
66 words
The article of claim 4, wherein said projections each include at least one side inclined relative to said major surface containing said projections at an angle sufficient to form a taper such that said projection may mesh with at least one corresponding projection when brought into contact with said corresponding projection and adhere thereto at least partially because of the frictional characteristics of said contacting sides.
Claim 7
Dependent Claim
25 words
The article of claim 1, wherein said sheet member is constructed of an electroformable material selected from the group of nickel, copper, and alloys thereof.
Claim 8
Dependent Claim
18 words
The article of claim 1, wherein at least one pair of said channels intersect within said sheet member.
Claim 9
Independent Claim
155 words
A method for constructing a sheet member having a plurality of channels said method comprising the steps of: (a) providing a mandrel having a base portion and a plurality of elongated ridge portions projecting from the base portion and having elongated edges spaced above the base portion, the ridge portions defining elongated grooves between the ridge portions, and the ridge portions having conductive surfaces; and (b) electrodepositing a conductive material on the conductive surfaces with the conductive material being deposited on the edges of the ridge portions at a faster rate than on the surfaces defining inner surfaces of the grooves until the conductive material bridges across between the ridge portions to envelope central portions of the grooves and form the sheet member having a base layer and a plurality of elongated projections extending from the sheet member base layer into each of the grooves, with each of the projections containing an elongated enclosed channel.
Claim 10
Independent Claim
155 words
A method for constructing a sheet member having a plurality of channels said method comprising the steps of: (a) providing a mandrel having a base portion and a plurality of elongated ridge portions projecting from the base portion and having elongated edges spaced above the base portion, the ridge portions defining elongated grooves between the ridge portions, and the ridge portions having conductive surfaces; and (b) electrodepositing a conductive material on the conductive surfaces with the conductive material being deposited on the edges of the ridge portions at a faster rate than on the surfaces defining inner surfaces of the grooves until the conductive material bridges across between the ridge portions to envelope central portions of the grooves and form the sheet member having a base layer and a plurality of elongated projections extending from the sheet member base layer into each of the grooves, with each of the projections containing an elongated enclosed channel.
Claim 11
Dependent Claim
18 words
The method of claim 8, further comprising the step of: (c) separating the mandrel from the sheet member.
Claim 12
Dependent Claim
98 words
The method of claim 9, wherein the sheet member projections have elongated edges spaced above the base layer, the projections defining elongated grooves between the projections, and the method further comprises the step of: (d) electrodepositing a conductive material on the conductive surfaces of the projections with the conductive material being deposited on the edges of the projections at a faster rate than on the surfaces defining inner surfaces of the grooves until the conductive material bridges across between the projections to envelope central portions of the grooves and form additional elongated enclosed channels in the sheet member.
Claim 13
Dependent Claim
25 words
The method of claim 8, further including the step of: passivating the surface of said elongated ridge portions of said mandrel prior to step (b).
Claim 14
Dependent Claim
27 words
The method of claim 10, further comprising the step of: activating said first major surface of said first sheet portion prior to step (d) in claim 10.
Claim 15
Dependent Claim
11 words
An article produced in accordance with the method of claim 8.
Claim 16
Dependent Claim
11 words
An article produced in accordance with the method of claim 10.
References Cited (Backward Citations)
US2365670A
Cited
US2890273A
Cited
US3445348A
Cited
US3520357A
Cited
US3847211A
Cited
US3692637A
Cited
US3901731A
Cited
US3850762A
Cited
US4078604A
Cited
JPS5214259A
Cited
US4182412A
Cited
US4285779A
Cited
JPS5826996A
Cited
US4516632A
Cited
US4622621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |