US3702458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal device to indicate malfunction of vehicle clutch
Assignee: Individual
•
Filing: 1971-09-20
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Granted: 1972-11-07
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Expires: 1991-09-20
Abstract
Abstract A clutch shaft has a cavity that receives a compression spring outside of which is a first electrical contact. A telescoping plunger rod movably extends into said cavity and it carries another electrical contact normally spaced from the first contact. When the clutch is worn or has any malfunction, such as being out of adjustment, the telescoping shaft moves farther into said cavity and at a predetermined point the two contacts meet, giving a signal such as illuminating a bulb or making a buzzing sound, to indicate the clutch needs attention.
Inventors
- 👤 Alfred J Capachietti Sr
- 👤 Daniel P Capriotti Sr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:51
CPC Classifications
F; F16; F16D; F16D23/00; F16D23/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
110 words
A signal device to indicate clutch malfunction comprising a shaft having a cavity at one end, a compression spring in said cavity, a plunger rod telescopically extending into said cavity and being adjacent one end of said spring, a first contact member mounted in said shaft, another contact member carried by said plunger rod and normally spaced from said first contact member and being so positioned to contact the latter when said rod moves a predetermined distance farther into said cavity, a signal member, and electricity conducting means connected to said contact members and said signal member to thereby provide a closed circuit when said contact members are in contact.
Claim 2
Dependent Claim
110 words
A signal device to indicate clutch malfunction comprising a shaft having a cavity at one end, a compression spring in said cavity, a plunger rod telescopically extending into said cavity and being adjacent one end of said spring, a first contact member mounted in said shaft, another contact member carried by said plunger rod and normally spaced from said first contact member and being so positioned to contact the latter when said rod moves a predetermined distance farther into said cavity, a signal member, and electricity conducting means connected to said contact members and said signal member to thereby provide a closed circuit when said contact members are in contact.
Claim 3
Dependent Claim
41 words
A signal device as of claim 1, and a pusher member of insulating material at the end of and forming part of said rod and being adjacent one end of said spring, said first contact member extending into said pusher member.
Claim 4
Dependent Claim
28 words
A signal device as of claim 1, said shaft having a housing portion in which said cavity is located, said first contact member extending into said housing portion.
Claim 5
Dependent Claim
37 words
A signal device as of claim 1, said rod having a longitudinally extending hole therein and extending to an outer extremity thereof, said electricity conducting means extending from said first contact member through said hole and beyond.
Claim 6
Dependent Claim
28 words
A signal device as of claim as of claim 2, and a pin member extending into said pusher member and extending into said rod and being fixed therein.
Claim 7
Dependent Claim
25 words
A signal device as of claim 1, and a pull-back spring attached to said rod and being adapted to be anchored exteriorly of said device.
Claim 8
Dependent Claim
28 words
A signal device as of claim 5, said shaft having a housing portion in which said cavity is located, said first contact member extending into said housing portion.
Claim 9
Dependent Claim
25 words
A signal device as of claim 7, said another contact member being opposite said spring and rearwardly of the normal position of said pusher member.
References Cited (Backward Citations)
US2425985A
Cited
US3469666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |