US3918329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark plug gap adjuster
Assignee: St Barnabas Free Home Inc
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Filing: 1975-03-20
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Granted: 1975-11-11
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Expires: 1995-03-20
Abstract
Abstract A frame has upper and lower portions with a passage through each one. The passages are axially aligned and spaced apart by a recess in the frame extending laterally out to the outside of the frame. A screw projecting from the ends of the upper passage can be turned by its upper end to lower and raise it. The lower passage will receive and hold the threaded end of a spark plug with its spark electrodes disposed in the frame recess directly beneath the screw, so that when a spark gap gauge is inserted between the electrodes the screw can be turned down to bend the upper electrode down as far as permitted by the gauge to thereby provide the required spark gap between the electrodes.
Inventors
- 👤 Paul O W Hopkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:43
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/0035
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
174 words
A spark plug gap adjuster comprising a frame provided with upper and lower portions and with a passage through its lower portion and a threaded passage through its upper portion, said passages being axially aligned and spaced apart by a recess in the frame extending laterally out to the outside of the frame, a screw rotatably mounted in the upper passage and projectiNg from its ends, and means at the upper end of the screw for turning it to lower and raise it in said upper passage, said lower passage being of a size to receive the threaded end of a spark plug, the frame being provided with means for holding a spark plug in said lower passage rigidly with its spark electrodes disposed in said recess directly beneath said screw, whereby when a spark gap gauge is inserted in said recess and between said electrodes the screw can be turned down to bend the screw-engaging electrode down as far as permitted by the gauge to thereby provide the required gap between the electrodes.
Claim 2
Dependent Claim
174 words
A spark plug gap adjuster comprising a frame provided with upper and lower portions and with a passage through its lower portion and a threaded passage through its upper portion, said passages being axially aligned and spaced apart by a recess in the frame extending laterally out to the outside of the frame, a screw rotatably mounted in the upper passage and projectiNg from its ends, and means at the upper end of the screw for turning it to lower and raise it in said upper passage, said lower passage being of a size to receive the threaded end of a spark plug, the frame being provided with means for holding a spark plug in said lower passage rigidly with its spark electrodes disposed in said recess directly beneath said screw, whereby when a spark gap gauge is inserted in said recess and between said electrodes the screw can be turned down to bend the screw-engaging electrode down as far as permitted by the gauge to thereby provide the required gap between the electrodes.
Claim 3
Dependent Claim
21 words
A spark plug gap adjuster according to claim 1, in which said recess is open on three sides of the frame.
Claim 4
Dependent Claim
28 words
A spark plug gap adjuster according to claim 1, in which said recess is a bore extending into the frame substantially perpendicular to the axis of said passages.
Claim 5
Dependent Claim
18 words
A spark plug gap adjuster according to claim 3, in which said bore extends entirely through the frame.
Claim 6
Dependent Claim
98 words
A spark plug gap adjuster according to claim 1, in which said plug-holding means is a screw thread in said lower passage, said adjuster including an externally and internally threaded adapter sleeve for insertion in said lower passage, the external threads of the sleeve being adapted to register with the threads in said lower passage to hold the sleeve in place, and the inside of the sleeve being of a size to receive and hold the threaded end of a spark plug that is too small to fit in said lower passage in the absence of the sleeve.
Claim 7
Dependent Claim
45 words
A spark plug gap adjuster according to claim 1, including a hole in the adjuster for receiving the screw-engageable electrode of the spark plug for bending it away from the opposing electrode before the spark plug is inserted in said lower passage of the frame.
References Cited (Backward Citations)
US1985410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |