US3827186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deflashing apparatus
Assignee: Air Products and Chemicals Inc
•
Filing: 1972-05-30
•
Granted: 1974-08-06
•
Expires: 1992-05-30
Abstract
Abstract Apparatus includes connecting rods which each pivot about a connection on a disc which is eccentric with respect to the axis of the shaft driving the disc to supply vertical reciprocatory motion. Particular ranges of amplitude, frequency and loading are utlilized to cause impacting of articles against at least one surface and abrading against each other in the cryogenic deflashing of the articles.
Inventors
- 👤 D Ehnot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:57
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/02; B24B31/00; B24B31/06
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
144 words
A method of deflashing articles by embrittling at least the flash portions of such articles and subjecting the articles to vibrating forces characterized by: a. continuously introducing said articles into the inlet of a deflashing chamber having elongated bottom, top and side walls extending at least several feet in length, b. continuously passing said articles through said elongated deflashing chamber from said inlet adjacent one end to a spaced apart outlet adjacent the opposite end of said elongated chamber and continuously discharging deflashed articles therefrom, c. introducing a cryogenic cooling medium at a temperature below 0*F. into said elongated chamber in the vicinity of said inlet and into contact with said articles for embrittling at least the flash portions of said articles, and d. vertically vibrating said elongated deflashing chamber at a frequency and amplitude to break the embrittled flash portions from said articles.
Claim 2
Independent Claim
144 words
A method of deflashing articles by embrittling at least the flash portions of such articles and subjecting the articles to vibrating forces characterized by: a. continuously introducing said articles into the inlet of a deflashing chamber having elongated bottom, top and side walls extending at least several feet in length, b. continuously passing said articles through said elongated deflashing chamber from said inlet adjacent one end to a spaced apart outlet adjacent the opposite end of said elongated chamber and continuously discharging deflashed articles therefrom, c. introducing a cryogenic cooling medium at a temperature below 0*F. into said elongated chamber in the vicinity of said inlet and into contact with said articles for embrittling at least the flash portions of said articles, and d. vertically vibrating said elongated deflashing chamber at a frequency and amplitude to break the embrittled flash portions from said articles.
Claim 3
Dependent Claim
26 words
Deflashing method as recited in claim 1 wherein the loading ranges from about 4 to about 10 pounds per square foot of said lower interior surface.
Claim 4
Dependent Claim
17 words
Deflashing method as recited in claim 1 wherein the amplitude ranges from 0.75 inch to 1.25 inches.
Claim 5
Dependent Claim
18 words
Deflashing method as recited in claim 1 wherein the frequency ranges from 325 to 500 cycles per minute.
Claim 6
Dependent Claim
21 words
Deflashing method as recited in claim 1 wherein the amplitude and frequency are defined by the cross-hatched area of FIG. 8.
Claim 7
Dependent Claim
27 words
The method as claimed in claim 1 wherein step (d) comprises vibrating said elongated deflashing chamber at an amplitude within the range of 0.5 to 1.5 inches.
Claim 8
Dependent Claim
23 words
Deflashing method as recited in claim 1 wherein cooling medium is applied to articles prior to the time they enter the deflashing zone.
Claim 9
Dependent Claim
115 words
Apparatus for cryogenically deflashing articles formed from normally resilient material comprising means defining a deflashing zone in a chamber having a lower interior surface, means for introducing said articles and a cryogenic refrigerant into the deflashing zone, means for maintaining said articles in said zone with the flash thereon embrittled and at a loading ranging from about 2 to about 20 pounds per square foot, means for applying to said chamber vertical reciprocatory motion having an amplitude ranging from 0.5 inch to 1.5 inches and a frequency sufficiently high to impart random turbulent motion to said articles and cause said articles to impact at least against said lower interior surface to break away embrittled flash.
Claim 10
Dependent Claim
115 words
Apparatus for cryogenically deflashing articles formed from normally resilient material comprising means defining a deflashing zone in a chamber having a lower interior surface, means for introducing said articles and a cryogenic refrigerant into the deflashing zone, means for maintaining said articles in said zone with the flash thereon embrittled and at a loading ranging from about 2 to about 20 pounds per square foot, means for applying to said chamber vertical reciprocatory motion having an amplitude ranging from 0.5 inch to 1.5 inches and a frequency sufficiently high to impart random turbulent motion to said articles and cause said articles to impact at least against said lower interior surface to break away embrittled flash.
Claim 11
Dependent Claim
33 words
Apparatus for cryogenically deflashing articles as recited in claim 8 wherein the means for maintaining the articles in the deflashing zone at the specified loading comprises adjustable feed means and adjustable exit means.
Claim 12
Dependent Claim
46 words
Apparatus for cryogenically deflashing as recited in claim 8 wherein the deflashing zone is bounded by parallel impacting surfaces perpendicular to the direction of said motion, and the means for applying vertical reciprocatory motion causes articles to impact against said surfaces to break away embrittled flash.
Claim 13
Dependent Claim
120 words
Apparatus for cooling and vibrating articles to remove flash portions therefrom characterized by: a. means forming a base, b. means resiliently supporting said base for absorbing vibrations of the apparatus, c. means forming an insulated deflashing container for holding said articles to be deflashed, d. means attaching said deflashing container relative to said base, said attaching means including a drive motor supported by said base and including adjustable amplitude means capable of vibrating said deflashing chamber at an amplitude in the order of 0.5 to 1.5 inches, e. means limiting lateral movement of said deflashing chamber, and f. means for supplying a refrigerant into said insulated chamber for cooling and increasing the brittleness of at least the flash portions thereof.
Claim 14
Dependent Claim
120 words
Apparatus for cooling and vibrating articles to remove flash portions therefrom characterized by: a. means forming a base, b. means resiliently supporting said base for absorbing vibrations of the apparatus, c. means forming an insulated deflashing container for holding said articles to be deflashed, d. means attaching said deflashing container relative to said base, said attaching means including a drive motor supported by said base and including adjustable amplitude means capable of vibrating said deflashing chamber at an amplitude in the order of 0.5 to 1.5 inches, e. means limiting lateral movement of said deflashing chamber, and f. means for supplying a refrigerant into said insulated chamber for cooling and increasing the brittleness of at least the flash portions thereof.
Claim 15
Dependent Claim
16 words
Apparatus for deflashing articles as recited in claim 11 comprising additionally means for adjusting said amplitude.
Claim 16
Dependent Claim
67 words
Apparatus for deflashing as recited in claim 11 wherein said attaching means comprises i. connection means to said container ii. elongate first drive means having a first end and a second end, the first end being pivotally connected to said connection means iii. second drive means pivotally connected to the second end of said first drive means iv. third drive means to drive said second drive means.
Claim 17
Dependent Claim
80 words
Apparatus for deflashing articles as recited in claim 13 wherein said connection means extends transversely of said container, said first drive means comprises a connecting rod having its elongate dimension oriented vertically, said second drive means comprises a disc having its axis oriented horizontally, said third drive means comprises a shaft having its axis oriented horizontally, the connection of the second drive means to the second end of the first drive means being eccentric from the axis of said shaft.
Claim 18
Dependent Claim
40 words
AppaRatus for deflashing articles as recited in claim 14 wherein said attaching means comprises four structures each comprising connection means, first drive means, second drive means and third drive means, each structure positioned to support the container above the base.
Claim 19
Dependent Claim
23 words
Apparatus for deflashing as recited in claim 15 wherein each of the four structures has associated with it means for adjusting said amplitude.
Claim 20
Dependent Claim
80 words
Apparatus for deflashing as recited in claim 16 wherein each amplitude adjusting means comprises a first disc which is rigidly attached to a third drive means and a second disc which is a second drive means, said discs positioned side-by-side and adjustable relative to each other to vary the eccentricity of the connection of the second drive means to the second end of the first drive means with respect to the axis of said shaft of said third drive means.
Claim 21
Dependent Claim
32 words
Apparatus for deflashing as recited in claim 11 which additionally comprises a feed hopper communicating with said container, said hopper having a gate adjustable to vary the feed rate in continuous operation.
Claim 22
Dependent Claim
19 words
Apparatus for deflashing as recited in claim 11 wherein said container includes a ceiling adjustable in the vertical direction.
Claim 23
Dependent Claim
43 words
Apparatus for deflashing as recited in claim 19 wherein said container defining means has a lower interior surface and said attaching means is adapted to supply vertical reciprocatory motion to cause articles to impact against said ceiling and against said lower interior surface.
Claim 24
Dependent Claim
32 words
Apparatus for deflashing as recited in claim 11 wherein said container has an inlet and an outlet and includes at its outlet a dam adjustable to vary retention time in continuous operation.
Claim 25
Dependent Claim
18 words
Apparatus for deflashing as recited in claim 11 wherein said supporting means is adapted to incline said container.
Claim 26
Dependent Claim
27 words
Apparatus for deflashing as recited in claim 11 which additionally comprises a feed hopper communicating with said container and cooling medium supply means in said feed hopper.
Claim 27
Dependent Claim
35 words
Apparatus for deflashing as recited in claim 11 which additionally comprises a feed hopper communicating with said container including a channel through which deflashing media can be fed into said container independent of said articles.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |