US4633775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment construction for the attachment of a woven filter mat to a press plate of a cocoa press
Assignee: BV MACHINEFABRIEK PM DUYVIS PO BOX 10 1540 AA KOOG AAN DE ZAAN NETHERLANDS A CORP OF NETHERLANDS
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Filing: 1985-10-01
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Granted: 1987-01-06
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Expires: 2005-10-01
Abstract
Abstract The invention relates to the attachment of a filter mat (10), woven from stainless steel wire, to a press plate (8) of a cocoa press. It is known to insert the bent-over edge part of the mat (10) into a groove (15) in the press plate (8) and fix it by means of a pressed-in cord (19). In order to avoid the mat being broken at the place of bending, it is proposed according to the invention that the opposite walls (16, 17) of the groove against which the peripheral edge of the filter mat (10) and the cord (19) are pressed should form an angle between 25° and 55° with the surface of the press plate.
Inventors
- 👤 Gerardus Kruiver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
B; B30; B30B; B30B9/00; B30B9/02; B30B9/04; B30B9/045; A; A23; A23G; A23G1/00; A23G1/04; A23G1/08; B30B9/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
155 words
In apparatus for the attachment of a woven filter mat to a press plate of a cocoa press comprising a filter mat (10) forming a peripherial edge, a press plate (8) defining a reference surface (23) and a groove (15) arranged extending into the plate from the reference surface (23) for receiving the peripheral edge of the mat (10), the peripheral edge of the mat being bent-over for insertion into the groove (15) and a cord (19) pressed into the groove for retaining in place the peripheral edge of the mat, the improvement wherein the groove (15) is partially defined by a pair of opposed, substantially parallel walls (16, 17) against which walls the peripheral edge of the mat (10) and the cord (19) are pressed and which walls (16, 17) form an angle (β, γ) in a range of 25° and 55° with respect to the reference surface (23) of the press plate (8).
Claim 2
Dependent Claim
155 words
In apparatus for the attachment of a woven filter mat to a press plate of a cocoa press comprising a filter mat (10) forming a peripherial edge, a press plate (8) defining a reference surface (23) and a groove (15) arranged extending into the plate from the reference surface (23) for receiving the peripheral edge of the mat (10), the peripheral edge of the mat being bent-over for insertion into the groove (15) and a cord (19) pressed into the groove for retaining in place the peripheral edge of the mat, the improvement wherein the groove (15) is partially defined by a pair of opposed, substantially parallel walls (16, 17) against which walls the peripheral edge of the mat (10) and the cord (19) are pressed and which walls (16, 17) form an angle (β, γ) in a range of 25° and 55° with respect to the reference surface (23) of the press plate (8).
Claim 3
Dependent Claim
90 words
An improvement as defined in claim 1, wherein the groove (15) formed in the press plate (8) is defined further by an entrance section (24) of a one (16) of the pair of opposed walls against which the peripheral edge of the mat (10) is pressed being disposed at an angle (α) with respect to the reference surface (23) of the press plate (8) which is less than the angle (β, γ) of the opposed wall (16, 17) with respect to the reference surface (23) of the press plate (8).
Claim 4
Dependent Claim
31 words
An improvement as defined in claim 2, wherein the angle (β, γ) of the pair of opposed walls with respect to reference surface (23) of the press plate is about 45°.
Claim 5
Dependent Claim
27 words
An improvement as defined in claim 2, wherein the angle (α) of the entrance section of a one (16) of the pair opposed walls is about 30°.
Claim 6
Dependent Claim
31 words
An improvement as defined in claim 4, wherein the angle (β, γ) of the pair of opposed walls with respect to reference surface (23) of the press plate is about 45°.
Claim 7
Dependent Claim
31 words
An improvement as defined in claim 1, wherein the angle (β, γ) of the pair of opposed walls with respect to reference surface (23) of the press plate is about 45°.
References Cited (Backward Citations)
US1767078A
Cited
US2715965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |