US3869830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning the cavities of casting and the like
Assignee: Mead Corp
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Filing: 1973-09-28
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Granted: 1975-03-11
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Expires: 1993-09-28
Abstract
Abstract Automated apparatus for cleaning out manually inaccessible cavities of castings. The casting is placed on a work station or table and is held by side and top clamping members. An airborne stream of abrasive particles is now passed through the cavities, exiting through an opening in communication therewith. After a predetermined time clean air is blown through the casting along the same path as the abrasive material, thus to purge the casting of all foreign matter.
Inventors
- 👤 Jesse L Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:10
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/02; B24C3/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
238 words
In apparatus for cleaning internal cavities in castings and the like wherein there is at least one opening into a side of the casting communicating with at least one opening in the bottom of the casting, a. a table on which the casting is placed, said table having an opening therethrough in communication with the bottom opening in the casting when in place on the table, b. a stationary abutment against which the side of the casting having said opening therein is adapted to engage, there being an opening through the abutment in communication with the side opening in the casting when in place on the table, c. a power driven clamp member opposite the abutment adapted to press the side of the casting having the opening therein against the abutment, d. a movable casting positioning member disposed to be engaged by an end of the casting when it is moved onto the table, thus accurately to position the casting on the table relative to the direction of its movement thereonto, e. a power driven hold down member adapted to lower onto and engage the top of the casting while in place on the table, and f. means to force an airborne stream of abrasive material through the openings in the abutment thence into said side opening in the casting, into the casting cavities and out through the bottom casting and table opening, thus to clean said cavities.
Claim 2
Dependent Claim
238 words
In apparatus for cleaning internal cavities in castings and the like wherein there is at least one opening into a side of the casting communicating with at least one opening in the bottom of the casting, a. a table on which the casting is placed, said table having an opening therethrough in communication with the bottom opening in the casting when in place on the table, b. a stationary abutment against which the side of the casting having said opening therein is adapted to engage, there being an opening through the abutment in communication with the side opening in the casting when in place on the table, c. a power driven clamp member opposite the abutment adapted to press the side of the casting having the opening therein against the abutment, d. a movable casting positioning member disposed to be engaged by an end of the casting when it is moved onto the table, thus accurately to position the casting on the table relative to the direction of its movement thereonto, e. a power driven hold down member adapted to lower onto and engage the top of the casting while in place on the table, and f. means to force an airborne stream of abrasive material through the openings in the abutment thence into said side opening in the casting, into the casting cavities and out through the bottom casting and table opening, thus to clean said cavities.
Claim 3
Dependent Claim
238 words
In apparatus for cleaning internal cavities in castings and the like wherein there is at least one opening into a side of the casting communicating with at least one opening in the bottom of the casting, a. a table on which the casting is placed, said table having an opening therethrough in communication with the bottom opening in the casting when in place on the table, b. a stationary abutment against which the side of the casting having said opening therein is adapted to engage, there being an opening through the abutment in communication with the side opening in the casting when in place on the table, c. a power driven clamp member opposite the abutment adapted to press the side of the casting having the opening therein against the abutment, d. a movable casting positioning member disposed to be engaged by an end of the casting when it is moved onto the table, thus accurately to position the casting on the table relative to the direction of its movement thereonto, e. a power driven hold down member adapted to lower onto and engage the top of the casting while in place on the table, and f. means to force an airborne stream of abrasive material through the openings in the abutment thence into said side opening in the casting, into the casting cavities and out through the bottom casting and table opening, thus to clean said cavities.
Claim 4
Dependent Claim
238 words
In apparatus for cleaning internal cavities in castings and the like wherein there is at least one opening into a side of the casting communicating with at least one opening in the bottom of the casting, a. a table on which the casting is placed, said table having an opening therethrough in communication with the bottom opening in the casting when in place on the table, b. a stationary abutment against which the side of the casting having said opening therein is adapted to engage, there being an opening through the abutment in communication with the side opening in the casting when in place on the table, c. a power driven clamp member opposite the abutment adapted to press the side of the casting having the opening therein against the abutment, d. a movable casting positioning member disposed to be engaged by an end of the casting when it is moved onto the table, thus accurately to position the casting on the table relative to the direction of its movement thereonto, e. a power driven hold down member adapted to lower onto and engage the top of the casting while in place on the table, and f. means to force an airborne stream of abrasive material through the openings in the abutment thence into said side opening in the casting, into the casting cavities and out through the bottom casting and table opening, thus to clean said cavities.
Claim 5
Dependent Claim
46 words
Apparatus as defined in claim 1 in which there is means to stop the flow of said abrasive material and to purge the casting with a stream of clean air which passes into and out of the casting along the flow path of said abrasive material.
Claim 6
Dependent Claim
65 words
Apparatus as defined in claim 1 in which the power driven hold down member includes arms disposed when the hold down member is moved downwardly into contact with the top of the casting to straddle the casting, and power means to move the arms toward each other, thus to clamp the casting between them, further securing the casting in place while it is being cleaned.
Claim 7
Dependent Claim
50 words
Apparatus as defined in claim 3 in which the power driven hold down member includes material disposed to make a substantially airtight seal with the top of the casting when lowered thereonto, whereby castings having openings through the upper surfaces may have such openings closed off during the cleaning operation.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |