Patent US4477513A successfully refreshed from Google Patents.
Patent US3611245A successfully refreshed from Google Patents.
US3611245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control unit with impact control mounting cushion
Assignee: Duracell Inc USA
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Filing: 1970-02-16
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Granted: 1971-10-05
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Expires: 1990-02-16
Abstract
Abstract A control unit having two variable resistors connected in tandem with one each connected to concentric shafts utilizes an impact cushioning means to absorb shock loads imposed on the central shaft.
Inventors
- 👤 George O Puerner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:24
CPC Classifications
H; H01; H01C; H01C10/00; H01C10/30; H01C10/32; H01C10/36; H01C10/16; H01C10/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A control means comprising: a. first and second variable resistor units connected to each other in tandem, b. first drive shaft means coupled to said first variable resistor unit, c. second drive shaft means concentric with said first shaft means coupled to the other of said second variable resistor units, d. collar means surrounding said second drive shaft means and coupled to mounting means, e. impact cushioning means coupled to said second variable resistor unit, and f. stop means carried by said first drive shaft means engaging said second variable resistor unit upon axial displacement of said first drive shaft means.
Claim 2
Dependent Claim
101 words
A control means comprising: a. first and second variable resistor units connected to each other in tandem, b. first drive shaft means coupled to said first variable resistor unit, c. second drive shaft means concentric with said first shaft means coupled to the other of said second variable resistor units, d. collar means surrounding said second drive shaft means and coupled to mounting means, e. impact cushioning means coupled to said second variable resistor unit, and f. stop means carried by said first drive shaft means engaging said second variable resistor unit upon axial displacement of said first drive shaft means.
Claim 3
Dependent Claim
15 words
The combination according to claim 1 wherein said impact cushioning means includes a spring means.
Claim 4
Dependent Claim
15 words
The combination according to claim 2 wherein said spring means includes a thin spring washer.
Claim 5
Dependent Claim
21 words
A control means according to claim 1 wherein said stop means includes a C-ring fixed to said first drive shaft means.
Claim 6
Dependent Claim
187 words
A control means comprising: a. a first cup-shaped housing carried by a first drive shaft, and a cover closing same, b. a terminal board disposed in said housing, said terminal board including resistance paths, c. a rotor means disposed within said housing and responsive to saiD shaft, said rotor carrying contact brushes engaging said resistance paths, d. a second cup-shaped housing carried by a second drive shaft that is concentric with said first drive shaft, said cup-shaped housing connected to said cover of said first named housing, e. a terminal board disposed in said second named housing, said terminal board including resistance paths, a rotor means disposed in said housing and responsive to said second drive shaft, said rotor carrying contact brushes engaging said resistance paths, f. cover means closing said second named housing including impact cushion means, g. collar means surrounding said second drive shaft and coupled to mounting means carrying said control means, said impact cushion means connected to said collar means, and h. stop means carried by said first drive shaft engaging said second cup-shaped housing upon axial displacement of said first drive shaft.
Claim 7
Dependent Claim
187 words
A control means comprising: a. a first cup-shaped housing carried by a first drive shaft, and a cover closing same, b. a terminal board disposed in said housing, said terminal board including resistance paths, c. a rotor means disposed within said housing and responsive to saiD shaft, said rotor carrying contact brushes engaging said resistance paths, d. a second cup-shaped housing carried by a second drive shaft that is concentric with said first drive shaft, said cup-shaped housing connected to said cover of said first named housing, e. a terminal board disposed in said second named housing, said terminal board including resistance paths, a rotor means disposed in said housing and responsive to said second drive shaft, said rotor carrying contact brushes engaging said resistance paths, f. cover means closing said second named housing including impact cushion means, g. collar means surrounding said second drive shaft and coupled to mounting means carrying said control means, said impact cushion means connected to said collar means, and h. stop means carried by said first drive shaft engaging said second cup-shaped housing upon axial displacement of said first drive shaft.
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) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |