US3699288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Speed responsive switch
Assignee: Dana Inc
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Filing: 1971-03-08
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Granted: 1972-10-17
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Expires: 1991-03-08
Abstract
Abstract A speed responsive switch which is actuated at a first predetermined speed of rotation and deactuated at a second, but lower, pre-determined speed of rotation. A collar is urged axially by a flyweight governor and its movement is resisted by a leaf spring and the lever arm of an electrical switch which resists movement of the collar in only one direction.
Inventors
- 👤 Jackie E Swoveland
- 👤 Lothair Irvin
- 👤 James A Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:41
CPC Classifications
G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/50; B60Q1/54
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A speed responsive switch comprising, a housing, a shaft journalled for relative rotation within said housing, a collar slidably mounted on said shaft, governor means for applying force to move said collar axially in a first direction, said force being substantially proportional to the speed of rotation of said Shaft, a leaf spring secured to said collar and extending into contact with an axially adjustable member secured to said housing for resiliently resisting axial movement of said collar in said first direction, an electrical switch, and lever means responsive to axial movement of said collar in said first direction for actuating said electrical switch, said lever means adapted to provide resistance to axial movement of said collar in said first direction and substantially no resistance to axial movement of said collar in the opposite direction.
Claim 2
Dependent Claim
135 words
A speed responsive switch comprising, a housing, a shaft journalled for relative rotation within said housing, a collar slidably mounted on said shaft, governor means for applying force to move said collar axially in a first direction, said force being substantially proportional to the speed of rotation of said Shaft, a leaf spring secured to said collar and extending into contact with an axially adjustable member secured to said housing for resiliently resisting axial movement of said collar in said first direction, an electrical switch, and lever means responsive to axial movement of said collar in said first direction for actuating said electrical switch, said lever means adapted to provide resistance to axial movement of said collar in said first direction and substantially no resistance to axial movement of said collar in the opposite direction.
Claim 3
Dependent Claim
23 words
The speed responsive switch of claim 1, wherein said governor means comprises a flyweight governor having a lever arm bearing against said collar.
Claim 4
Dependent Claim
32 words
The speed responsive switch of claim 1, wherein said lever means comprises a lever arm pivotally secured to said electrical switch and having a free end adapted to yieldingly engage said collar.
Claim 5
Dependent Claim
176 words
A speed responsive switch comprising, a housing, a shaft journalled for rotation within said housing, a collar slidably mounted on said shaft, restraining means for preventing rotation of said collar, a weight carrier fixed to said shaft, an opposed pair of governor weights pivotally mounted on said weight carrier and adapted to swing radially outwardly on rotation of said shaft, said governor weights having bell crank levers adapted to engage said collar, a leaf spring secured to said collar and having a free end bearing against an adjustable screw that is threadably secured in said housing for resiliently urging said collar into engagement with said bell crank levers, an electrical switch having an axially extending and pivotally mounted lever arm, said electrical switch being actuated by pivotal movement of said lever arm, bracket means for mounting said electrical switch within said housing, a portion of said lever arm being adapted to engage said collar whereby axial movement of said collar will cause said lever arm to pivot thereby actuating said electrical switch and overriding said collar.
Claim 6
Dependent Claim
176 words
A speed responsive switch comprising, a housing, a shaft journalled for rotation within said housing, a collar slidably mounted on said shaft, restraining means for preventing rotation of said collar, a weight carrier fixed to said shaft, an opposed pair of governor weights pivotally mounted on said weight carrier and adapted to swing radially outwardly on rotation of said shaft, said governor weights having bell crank levers adapted to engage said collar, a leaf spring secured to said collar and having a free end bearing against an adjustable screw that is threadably secured in said housing for resiliently urging said collar into engagement with said bell crank levers, an electrical switch having an axially extending and pivotally mounted lever arm, said electrical switch being actuated by pivotal movement of said lever arm, bracket means for mounting said electrical switch within said housing, a portion of said lever arm being adapted to engage said collar whereby axial movement of said collar will cause said lever arm to pivot thereby actuating said electrical switch and overriding said collar.
Claim 7
Dependent Claim
37 words
The speed responsive switch of claim 4, plus means for varying the location of said bracket means relative to said collar, to thereby vary the position of said electrical switch and lever arm relative to said collar.
Claim 8
Dependent Claim
134 words
A speed responsive switch comprising, a housing, a shaft journalled for relative rotation within said housing, a collar slidably mounted on said shaft, governor means for applying force to move said collar axially in a first direction, said force being substantially proportional to the speed of rotation of said shaft, a spring secured to said collar and extending into contact with an axially adjustable member secured to said housing for resiliently resisting axial movement of said collar in said first direction, an electrical switch, and lever means responsive to axial movement of said collar in said first direction for actuating said electrical switch, said lever means adapted to provide resistance to axial movement of said collar in said first direction and substantially no resistance to axial movement of said collar in the opposite direction.
Claim 9
Dependent Claim
134 words
A speed responsive switch comprising, a housing, a shaft journalled for relative rotation within said housing, a collar slidably mounted on said shaft, governor means for applying force to move said collar axially in a first direction, said force being substantially proportional to the speed of rotation of said shaft, a spring secured to said collar and extending into contact with an axially adjustable member secured to said housing for resiliently resisting axial movement of said collar in said first direction, an electrical switch, and lever means responsive to axial movement of said collar in said first direction for actuating said electrical switch, said lever means adapted to provide resistance to axial movement of said collar in said first direction and substantially no resistance to axial movement of said collar in the opposite direction.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |