US3645844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting means for foil type and similar elements
Assignee: Lodding Engineering Corp
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Filing: 1968-04-22
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Granted: 1972-02-29
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Expires: 1988-04-22
Abstract
Abstract The disclosure describes a support for a stationary drainage element for a paper machine extending across the Fourdrinier wire. The support comprises a flaring tenon for a dovetail slide incorporating means to adjust the distance between the flaring walls. The drainage element has a mortise slot for cooperating with the slide. The flare of the slide is adjusted by means of an actuator mounted at one end of the support. This abstract is intended neither to define the invention of the application, which is to be measured by the claims, nor in any way to be limiting as to the scope of the invention.
Inventors
- 👤 John E Grenier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/48; D21F1/483
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
A stationary drainage element for a paper machine disposed in fixed relationship to the Fourdrinier wire and extending in a first direction across the machine transversely of the direction of wire travel comprising support means for said element having a dovetail slide extending in said first direction, said slide having a tenon flaring transverse to said first direction, said element having a mortise slot extending in said first direction and converging transverse to said first direction toward its open side for sliding in said first direction to interlock with said slide, characterized by adjustable locking means within said tenon for locking said element in said relationship on said slide, and when unlocked for releasing said element to be removed from said relationship by sliding motion off said slide in said first direction to one side or the other of said machine.
Claim 2
Dependent Claim
141 words
A stationary drainage element for a paper machine disposed in fixed relationship to the Fourdrinier wire and extending in a first direction across the machine transversely of the direction of wire travel comprising support means for said element having a dovetail slide extending in said first direction, said slide having a tenon flaring transverse to said first direction, said element having a mortise slot extending in said first direction and converging transverse to said first direction toward its open side for sliding in said first direction to interlock with said slide, characterized by adjustable locking means within said tenon for locking said element in said relationship on said slide, and when unlocked for releasing said element to be removed from said relationship by sliding motion off said slide in said first direction to one side or the other of said machine.
Claim 3
Dependent Claim
89 words
A drainage element according to claim 1 in which said tenon is hollow and has sidewalls which diverge from a narrow part to a wide part and is open at said wide part, and said adjusting means is operable between said sidewalls in said wide part to force said sidewalls apart against confronting walls of said slot to lock said element on said slide, said sidewalls when not forced apart by said adjusting means being sufficiently closer together to allow freely sliding motion of said element on said slide.
Claim 4
Dependent Claim
22 words
A drainage element according to claim 1 including operator means located at one end of said support for adjusting said locking means.
Claim 5
Dependent Claim
60 words
A drainage element according to claim 3 in which said operator means is located in the path of said mortise slot when said element is in said sliding motion, and the dimensions of said operator means transverse to said first direction are smaller than corresponding dimensions of said slot, whereby said element can pass said slot over said operator means.
References Cited (Backward Citations)
US3535204A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |