Patent US3680361A successfully refreshed from Google Patents.
US3680361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure testing device
Assignee: Sykes Pickavant Ltd
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Filing: 1970-10-14
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Granted: 1972-08-01
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Expires: 1990-10-14
Abstract
Abstract A pressure testing device for testing whether an internal combustion engine cooling system is fluid-tight under normal operating pressure and whether a pressure regulator valve in the filler cap of the cooling system is functioning correctly comprising a pressure chamber, an air pump connected to the pressure chamber to supply air under pressure thereto, a pressure gauge connected to the pressure chamber to indicate the pressure in the chamber and an outlet connection from the pressure chamber for connection to a cooling system filler neck or to a filler cap, the outlet connection having adjustable attachment means suitable for engagement with conventional inter-engagement surfaces of filler necks and of filler caps of a variety of sizes, the device also being provided with at least one adaptor to adapt the outlet connection for sealing engagement with various sizes of filler necks and/or filler caps.
Inventors
- 👤 David John Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:52
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3227
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
159 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to supply air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap and; e. adjustable attachment means associated with the outlet connection, suitable for engagement with conventional inter engagement surfaces of filler necks and of filler caps of a variety of sizes; f. the attachment means comprising two sheet metal clips, the inner surfaces of which are adapted to engage a filler neck and the corresponding outer surfaces of which are adapted to engage a filler cap corresponding to the said filler neck, without adjustment oF the position of the clips from the position in which they engage the filler neck.
Claim 2
Dependent Claim
159 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to supply air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap and; e. adjustable attachment means associated with the outlet connection, suitable for engagement with conventional inter engagement surfaces of filler necks and of filler caps of a variety of sizes; f. the attachment means comprising two sheet metal clips, the inner surfaces of which are adapted to engage a filler neck and the corresponding outer surfaces of which are adapted to engage a filler cap corresponding to the said filler neck, without adjustment oF the position of the clips from the position in which they engage the filler neck.
Claim 3
Dependent Claim
30 words
A pressure testing device as claimed in claim 1 further comprising an adjustment mechanism such that the two clips are maintained in diametrically opposed positions throughout their range of adjustment.
Claim 4
Dependent Claim
84 words
A pressure testing device according to claim 1 further comprising an adjustment mechanism which comprises a fixed plate having guide means thereon, co-operating guide means movable with the clips for engaging with the guide means on the plate, and clips carrier adapted to maintain the clips in diametrically opposed positions as they are guided with respect to the fixed plate, the guide means being such that on rotation of the clips with their carrier an adjustment of the spacing of the clips takes place.
Claim 5
Dependent Claim
21 words
A pressure testing device as claimed in claim 3 including a locking means for securing the carrier in a desired location.
Claim 6
Dependent Claim
41 words
A pressure testing device according to claim 3 in which the guide means on the plate comprises two circumferential grooves, one for one end portion of each clip and two tangential grooves one for the other end portion of each clip.
Claim 7
Dependent Claim
67 words
A pressure testing device according to claim 1 comprising a first sealing shoulder forming part of said outlet connection for engagement with caps of one size, an adaptor having a surface for sealing engagement with said sealing shoulder and having a further sealing shoulder different in diameter from the diameter of said first sealing shoulder for engagement with caps of a size other than said one size.
Claim 8
Dependent Claim
96 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to supply air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap; and e. radially adjustable attachment means associated with the outlet connection, suitable for engagement with conventional inter-engagement surfaces of filler caps of a variety of diameters.
Claim 9
Dependent Claim
96 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to supply air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap; and e. radially adjustable attachment means associated with the outlet connection, suitable for engagement with conventional inter-engagement surfaces of filler caps of a variety of diameters.
Claim 10
Dependent Claim
37 words
A pressure testing device according to claim 7, said attachment means comprising two clips, said device further comprising an adjustable mechanism such that the two clips are maintained in diametrically opposed positions throughout their range of adjustment.
Claim 11
Dependent Claim
90 words
A pressure testing device according to claim 7 further comprising an adjustment mechanism which comprises a fixed plate having guide means thereon, cooperating guide means movable with the attachment means for engaging with the guide means on the plate, and an attachment means carrier adapted to maintain the attachment means in diametrically opposed positions as they are guided with respect to the fixed plate, the guide means being such that on rotation of the attachment means with their carrier an adjustment of the spacing of the attachment means takes place.
Claim 12
Dependent Claim
21 words
A pressure testing device as claimed in claim 9 including a locking means for securing the carrier in a desired location.
Claim 13
Dependent Claim
41 words
A pressure testing device according to claim 9 in which the guide means on the plate comprise two circumferential grooves, one for one end portion of each clip and two tangential grooves one for the other end portion of each clip.
Claim 14
Dependent Claim
67 words
A pressure testing device according to claim 7 comprising a first sealing shoulder forming part of said outlet connection for engagement with caps of one size, and adaptor having a surface for sealing engagement with said sealing shoulder and having a further sealing shoulder different in diameter from the diameter of said first sealing shoulder for engagement with caps of a size other than said one size.
Claim 15
Dependent Claim
119 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to suppLy air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap; e. attachment means associated with the outlet connection, suitable for engagement with conventional filler neck engaging surfaces of a filler cap; f. means for adjusting the position of the attachment means in radially inward and outward directions whereby said attachment means can be engaged with caps of varying sizes.
Claim 16
Dependent Claim
119 words
A pressure testing device for internal combustion engine cooling systems and filler caps comprising: a. a pressure chamber; b. an air pump connected to the pressure chamber to suppLy air under pressure thereto; c. a pressure gauge operatively connected to the pressure chamber to indicate the pressure in the chamber; d. an outlet connection from the pressure chamber for connection to a cooling system filler neck or a filler cap; e. attachment means associated with the outlet connection, suitable for engagement with conventional filler neck engaging surfaces of a filler cap; f. means for adjusting the position of the attachment means in radially inward and outward directions whereby said attachment means can be engaged with caps of varying sizes.
References Cited (Backward Citations)
US2981095A
Cited
US3138949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |