Patent US3913273A successfully refreshed from Google Patents.
US3913273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug center
Assignee: Individual
•
Filing: 1973-04-23
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Granted: 1975-10-21
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Expires: 1993-04-23
Abstract
Abstract A cylindrical adapter fits on a freon canister and has an inverted frust-conical top with a central upstanding tubular member. An upper housing is supported upon the adapter for limited rotational movement relative thereto and carries a control tube extending downwardly through the tubular member of the adapter with a valve actuating member at its lower end to puncture the valve of the canister and provide a gas jet upwardly through the control tube. The housing has a central top opening to receive and seal with a spark plug which upon insertion presses the control tube downwardly to open the canister valve. Registering openings through the sides of the two tubes admit sand to the gas stream from the recess in the top of the adapter, and provision is made for closing the openings by turning of the housing and its control tube relative to the adapter and its tubular member. A shield returns the spent sand to the recess for re-use, and openings in the housing provide an escape for the spent freon.
Inventors
- 👤 Jr Karl J Romanowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:18
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/32; B24C3/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A spark plug cleaner comprising a sand blast nozzle, means to support a spark plug with its face aligned with the discharge from said nozzle, a canister of pressurized gas, and adapter means to mount said nozzle upon said canister of pressurized gas for operating the nozzle.
Claim 2
Dependent Claim
47 words
A spark plug cleaner comprising a sand blast nozzle, means to support a spark plug with its face aligned with the discharge from said nozzle, a canister of pressurized gas, and adapter means to mount said nozzle upon said canister of pressurized gas for operating the nozzle.
Claim 3
Dependent Claim
88 words
The construction of claim 1 comprising two inverted cup shaped members, the upper one supported upon the lower one and cooperating therewith as a housing to provide an enclosed sand blast chamber containing sand in the bottom thereof and the other being adapted to be supported upon said canister of pressurized gas, upwardly directed nozzle means in said chamber, means to position a spark plug facing said nozzle means in said chamber, and means to supply pressurized gas from said canister to said nozzle to actuate the same.
Claim 4
Dependent Claim
57 words
The construction of claim 2 in which said nozzle means comprises a vertical tube having openings therein for receiving sand from said chamber, said last named means comprises an extension of said vertical tube downwardly to the canister, and means are provided in said chamber to salvage sand spent in blasting the face of the spark plug.
Claim 5
Dependent Claim
43 words
The construction of claim 3 and means to close the openings in said vertical tube to prevent sand from entering the same, whereby pressurized gas free from sand impinges upon the face of the spark plug to clean excess sand and dirt therefrom.
Claim 6
Dependent Claim
56 words
The construction of claim 2 in which said nozzle means comprises a vertical tube in said chamber, said last named means comprises an extension of said vertical tube downwardly to the canister, and means mounting said tube for vertical movement to thereby actuate the discharge valve of the canister by a downward movement of said tube.
Claim 7
Dependent Claim
41 words
The construction of claim 5 in which the upper end of said tube constitutes means supporting the spark plug, and manual downward pressure upon the spark plug effects downward movement of said tube to actuate the discharge valve of the canister.
Claim 8
Dependent Claim
62 words
The construction of claim 4 in which said means to close the openings in said vertical tube comprise a ported sleeve fixed in the top of said lower cup shaped member, the ports of said sleeve registering with the openings in said tube to admit sand therethrough, and means to rotate said vertical tube relative to said sleeve to eliminate such registry.
Claim 9
Dependent Claim
37 words
The construction of claim 7 in which the top of said lower member constitutes the bottom of said sand blast chamber and is shaped in an inverted frustrum of a cone to direct sand into said ports.
Claim 10
Dependent Claim
28 words
The construction of claim 7 in which said vertical tube is interlocked rotationally with said upper member, and said upper member is rotationally supported by said lower member.
Claim 11
Dependent Claim
124 words
The construction of claim 3 in which said last named means comprises in part an inner skirt depending from the top of said upper member to below the level of theupper end of said tube, means spacing the upper end of said tube from the face of the spark plug to be sand blasted, and means in the top of said upper member outwardly of said inner skirt for the escape of gas, whereby the jet stream of gas blasting the face of the spark plug escapes over the top edge of said tube carrying with it the sand and dirt which then falls to the bottom of the chamber as the gases change course in ducking under the edge of said inner skirt.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |