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US3667260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust pipe protector lock
Assignee: Master Lock Co LLC
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Filing: 1971-01-25
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Granted: 1972-06-06
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Expires: 1991-01-25
Abstract
Abstract For the protection of the outer end portion of an internal combustion engine exhaust pipe, a protector is available which includes a collar secured to the outer end portion of the exhaust pipe hingedly carrying a protective cover formed with a weighted, radially outwardly projecting fin. The cover normally overlies and closes the open outer end of the exhaust pipe to which it is applied but will hingedly move to open position through exhaust gas pressure. This invention provides a lock for securing the cover in its closed position to prevent the undesired introduction of foreign material into the discharge end of the exhaust pipe when the engine is not being operated and the equipment or vehicle embodying the engine is idle and unattended.
Inventors
- 👤 Daniel J Foote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:20
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/08; F01N13/085; E; E05; E05B; E05B67/00; E05B67/06; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/452; Y10T70/454; Y10T70/487; Y10T70/491; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5544; Y10T70/5611; Y10T70/5615; Y10T70/5619; Y10T70/5637; Y10T70/569; Y10T70/573; Y10T70/5735; Y10T70/5739
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
In combination, an exhaust pipe having a discharge end; a protector for the latter including a relatively stationary member and a relatively movable member for normal movement to and from closing relation to the discharge end of the exhaust pipe; and a shackle-equipped padlock having the outer end portion of its shackle anchored to said relatively stationary member and having its body releasably locked to the shackle in movement blocking relation to said movable member.
Claim 2
Dependent Claim
75 words
In combination, an exhaust pipe having a discharge end; a protector for the latter including a relatively stationary member and a relatively movable member for normal movement to and from closing relation to the discharge end of the exhaust pipe; and a shackle-equipped padlock having the outer end portion of its shackle anchored to said relatively stationary member and having its body releasably locked to the shackle in movement blocking relation to said movable member.
Claim 3
Dependent Claim
26 words
The combination recited in claim 1 wherein the outer end portion of the padlock shackle is rockingly curled about a portion of said relatively stationary member.
Claim 4
Dependent Claim
38 words
The combination recited in claim 1 wherein the padlock body may be unlocked relative to the shackle legs and removed therefrom to permit said movable member to move to and from the discharge end of the exhaust pipe.
Claim 5
Dependent Claim
24 words
The combination recited in claim 1 wherein the relatively stationary member of the protector is secured about the discharge end of the exhaust pipe.
Claim 6
Dependent Claim
28 words
The combination recited in claim 4 wherein the relatively stationary member of the protector is formed with a lateral extension to which the movable member is hingedly connected.
Claim 7
Dependent Claim
37 words
The combination recited in claim 1 wherein both the stationary and movable members of the protector are formed with extensions with the extension on the stationary member being hingedly connected to the extension on the movable member.
Claim 8
Dependent Claim
18 words
The combination recited in claim 6 wherein the legs of the padlock shackle straddle the movable member extension.
Claim 9
Dependent Claim
100 words
For an exhaust pipe protector which includes a mounting member applied to the open end of the exhaust pipe and a cover for the latter having an extension hinged to the mounting member, the improvement which comprises: a pair of padlock shackle legs secured at their outer end portions to an element of the mounting member; and a padlock body lockably receiving the other end portions of said shackle legs to position said body in close adjacency to the cover extension to lock the cover onto the mounting member in closing relation to the open end of the exhaust pipe.
Claim 10
Dependent Claim
100 words
For an exhaust pipe protector which includes a mounting member applied to the open end of the exhaust pipe and a cover for the latter having an extension hinged to the mounting member, the improvement which comprises: a pair of padlock shackle legs secured at their outer end portions to an element of the mounting member; and a padlock body lockably receiving the other end portions of said shackle legs to position said body in close adjacency to the cover extension to lock the cover onto the mounting member in closing relation to the open end of the exhaust pipe.
Claim 11
Dependent Claim
39 words
The exhaust pipe protector lock assemblage recited in claim 8 wherein the shackle legs are connected at their outer ends and are curled about an element of the mounting member to rockingly mount the shackle legs on the latter.
Claim 12
Dependent Claim
47 words
The assemblage recited in claim 9 wherein the mounting member is a collar having a pair of laterally projecting spaced-apart straps and the extension on the cover is a fin rockingly interposed between said straps, the shackle legs being inwardly of said straps but straddling said fin.
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) | 1975-06-06 | 1975-12-06 | 1976-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-06 | 1979-12-06 | 1980-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-06 | 1983-12-06 | 1984-06-06 | $7700.00 | Window Closed / Lapsed |