EP0592239A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method and apparatus for densification of porous billets
Assignee: Safran Landing Systems SAS
•
Filing: 1993-10-08
•
Granted: —
•
Expires: 2013-10-08
Abstract
Abstract A reactor 100 for densifying a porous billet includes heating means such as an induction coil 104 within the reactor. The billet is immersed in a precursor liquid contained in the reactor. Other heating means such as resistive heating may be used, and the heating means may be adapted to the shape of the billet. The heating may be interrupted to control the densification process and/or increased as densification proceeds. <IMAGE>
Inventors
- 👤 Garrett S. Thurston
- 👤 Raymond J. Suplinskas
- 👤 Thomas J. Carroll
- 👤 Donald F. Connors, Jr.
- 👤 David T. Scaringella
- 👤 Richard C. Krutenat
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:49
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/02; C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5001; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C04B41/009; C23; C23C; C23C16/00; C23C16/04; C23C16/045; F; F16; F16D; F16D69/00; F16D69/02; F16D69/023; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/52; C04B2235/5208; C04B2235/5252; C04B2235/70; C04B2235/74; C04B2235/77; C04B2235/94; C04B2235/95; C04B2235/96
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
56 words
A reactor (100) for densifying porous billet (302, 402, 502, 602) by heating the billet in a precursor liquid characterized by a means, within the reactor, for heating (104, 304, 404, 504, 604) the porous billet to a temperature sufficient to cause the precursor liquid to pyrolize and deposit material within the pores of the billet.
Claim 2
Dependent Claim
20 words
The reactor of claim 1, characterised in that the means for heating comprises an induction coil (104, 304, 504, 604).
Claim 3
Dependent Claim
22 words
The reactor of claim 2 characterised by additionally comprising a fixture (200) for holding the preform and for holding the induction coil.
Claim 4
Dependent Claim
28 words
The reactor of claim 1, 2 or 3 characterised in that the means for heating comprises electrodes (404) with connectors adapted to make electrical contact to the preform.
Claim 5
Dependent Claim
33 words
The reactor of claim 4, characterised in that the electrode comprises a conducting element having a slot (406) therethrough adapted to receive the preform and a nut (410) threaded onto the conducting element.
Claim 6
Dependent Claim
20 words
The reactor of any one of claims 1 to 5, characterised by additionally comprising means for cooling the precursor liquid.
Claim 7
Dependent Claim
21 words
The reactor of any one of claims 1 to 6, characterised by comprising means for generating waves in the precursor liquid.
Claim 8
Dependent Claim
16 words
The reactor of claim 7, characterised in that the means for generating waves comprises a transducer.
Claim 9
Independent Claim
26 words
A method of densifying porous billets, characterised in that the billet is heated in a reactor as defined in any one of claims 1 to 8.
Claim 10
Dependent Claim
24 words
The method of claim 9 characterised in that the step of heating comprises interrupting the heating for periods between 0.01 seconds and 10 minutes.
Claim 11
Dependent Claim
21 words
The method of claim 10 characterised in that the heating is interrupted at intervals ranging from 0.1 seconds to 5 minutes.
Claim 12
Dependent Claim
20 words
The method of claim 10 or 11 characterised in that the period of interrupted heating decreases during the densification cycle.
Claim 13
Independent Claim
52 words
A method of densifying a porous billet by heating the billet while immersed in a precursor liquid, characterized by heating the billet by a first heating method and by a second heating method to a temperature sufficient to cause the precursor liquid to form a deposit within the pores of the billet.
Claim 14
Dependent Claim
25 words
The method of claim 13 characterised in that the step of heating comprises heating simultaneously by the first heating method and the second heating method.
Claim 15
Dependent Claim
32 words
The method of claim 13 characterised in that the step of heating comprises first heating solely by the first heating method and then heating simultaneously by the first and second heating methods.
Claim 16
Dependent Claim
25 words
The method of claim 13 characterised in that the ratio of heating provided by the first heating method to the second heating method monotonically increases.
Claim 17
Independent Claim
58 words
The method of densifying a porous billet, comprising the steps of: a) immersing the billet in a precursor liquid; b) heating the preform to a temperature which causes the precursor liquid to boil and which causes the precursor liquid to convert to a deposit within the pores of the billet; and c) creating waves in the precursor liquid.
Claim 18
Dependent Claim
24 words
The method of claim 17 characterised in that the step of creating waves comprises creating waves by actuating a transducer in the precursor liquid.
Claim 19
Dependent Claim
21 words
The reactor or method of any one of claims 1 to 18, characterised in that the precursor liquid comprises an organosilane.
Claim 20
Dependent Claim
21 words
The reactor or method of any one of claims 1 to 19, characterised in that the precursor liquid comprises a hydrocarbon.
Claim 21
Independent Claim
28 words
The method of densifying a porous billet immersed in a precursor liquid, characterised in that the energy provided to heat the billet is increased as the billet densifies.
Claim 22
Dependent Claim
34 words
The method of claim 23, wherein the energy increases according to the formula Po + t n where Po is an initial power, is a constant, n is a constant and t represents time.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.