US3901449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cordless electric sprayer
Assignee: HD Hudson Manufacturing Co
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Filing: 1974-03-01
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Granted: 1975-08-26
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Expires: 1994-03-01
Abstract
Abstract An electric sprayer comprising a tank having a housing extending over portions of the tank and a piston pump extending into the tank. The pump has an inlet and an outlet. Discharge equipment including a spray nozzle is mounted to an exterior surface of the housing. The discharge equipment is connected to an elastomeric tube surrounded by a coil spring which, in turn, is connected to a slender elongated tube connected to the pump outlet. A motor driven by a set of rechargeable batteries is mounted in the housing and is connected to the pump. An on/off switch electrically interconnecting the batteries and motor is mounted to an exterior surface of the housing. The discharge equipment includes portions pivotally mounted to the housing exterior surface so as to permit movement between a first inoperative position wherein the discharge equipment shields the on/off switch to a second operative position wherein the switch is exposed.
Inventors
- 👤 Carl E Bochmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
B; B05; B05B; B05B9/00; B05B9/03; B05B9/04; B05B9/08; B05B9/085; B05B9/0855; B05B9/0861; B05B15/00; B05B15/60; B05B15/65; B05B15/652
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
An electric sprayer comprising: a tank; a piston pump extending into said tank, said pump comprises a body portion, an elongated cylindrical member extending from said body, a piston rod disposed for movement within said cylinder member, an inlet port defined iN said body, a one-way check valve mounted in said inlet port, an outlet port defined in said body; discharge equipment including a spray nozzle connected to said pump outlet; an elongated slender rigid tube extending from said pump outlet for connection with said discharge equipment; an elongated elastomeric tube interposed between and connected to said rigid tube and said discharge equipment; a coil spring mounted about and coextensive with said elastomeric tube; a housing extending over portions of and connected to said tank; and a motor mounted in said housing, said motor being connected in driving relationship to said pump.
Claim 2
Dependent Claim
142 words
An electric sprayer comprising: a tank; a piston pump extending into said tank, said pump comprises a body portion, an elongated cylindrical member extending from said body, a piston rod disposed for movement within said cylinder member, an inlet port defined iN said body, a one-way check valve mounted in said inlet port, an outlet port defined in said body; discharge equipment including a spray nozzle connected to said pump outlet; an elongated slender rigid tube extending from said pump outlet for connection with said discharge equipment; an elongated elastomeric tube interposed between and connected to said rigid tube and said discharge equipment; a coil spring mounted about and coextensive with said elastomeric tube; a housing extending over portions of and connected to said tank; and a motor mounted in said housing, said motor being connected in driving relationship to said pump.
Claim 3
Dependent Claim
77 words
The electric sprayer in accordance with claim 1 further comprising a rechargeable battery mounted in said housing, on/off switch means mounted to an exterior surface of said housing, said switch means electrically interconnecting said battery and said motor; and said discharge equipment includes portions pivotally mounted to said housing exterior surface to permit movement between a first inoperative position wherein said discharge means shields said on/off switch to a second operative position wherein said switch is exposed.
Claim 4
Dependent Claim
79 words
The electric sprayer is accordance with claim 1 wherein said coil spring includes first and second ends wound about respective first and second ends of said elastomeric tube, said elastomeric tube first end is disposed about one end of said rigid tube, said elastomeric tube second end is disposed about portions of said discharge equipment and said coil spring ends are biased radially inwardly whereby to cooperate in securing said elastomeric tube to said rigid tube and discharge equipment.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |