US4061250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Depress button type sprayer
Assignee: Individual
•
Filing: 1976-05-25
•
Granted: 1977-12-06
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Expires: 1996-05-25
Abstract
Abstract A depress button type sprayer comprises a piston slidably inserted into a cylinder and provided with a liquid jetting nozzle, a lever for moving the piston into the cylinder against the force of a spring and a depress button for operating the lever.
Inventors
- 👤 Tetsuya Tada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:21
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1001; B05B11/1009; B05B11/1012; B05B11/1014; B05B11/0005; B05B11/0037; B05B11/0039; B05B11/0044
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
A depress button sprayer comprising: a spray body provided with a cylinder having an opening at one end; a piston slidably mounted in a liquid-tight fashion in the cylinder; spring means for urging the piston outwardly of the cylinder; a nozzle in communication with the cylinder and having a dispensing hole for jetting a liquid from within the cylinder; a pivotable lever coupled to the piston for sliding the piston into the cylinder against the force of the spring means, the lever having a rounded free end; a pivot for pivotally supporting the lever in a position spaced from the axis of the piston; a cap housing for covering the spray body and the lever, the cap housing having a longitudinally extending recess at the rear upper portion thereof; and a depress button slidably received in the recess and drivingly point-contacted with the rounded free end of the lever.
Claim 2
Dependent Claim
149 words
A depress button sprayer comprising: a spray body provided with a cylinder having an opening at one end; a piston slidably mounted in a liquid-tight fashion in the cylinder; spring means for urging the piston outwardly of the cylinder; a nozzle in communication with the cylinder and having a dispensing hole for jetting a liquid from within the cylinder; a pivotable lever coupled to the piston for sliding the piston into the cylinder against the force of the spring means, the lever having a rounded free end; a pivot for pivotally supporting the lever in a position spaced from the axis of the piston; a cap housing for covering the spray body and the lever, the cap housing having a longitudinally extending recess at the rear upper portion thereof; and a depress button slidably received in the recess and drivingly point-contacted with the rounded free end of the lever.
Claim 3
Dependent Claim
30 words
A depress button sprayer according to claim 1, wherein the rear surface of the depress button has a convexly curved portion for engaging the rounded free end of the lever.
Claim 4
Dependent Claim
25 words
A depress button sprayer according to claim 2, wherein the upper surface of the depress button has a concave portion to receive an operator's finger.
Claim 5
Dependent Claim
71 words
A depress button sprayer according to claim 2, wherein the recess of the cap housing is defined by a pair of side walls and a front wall of the cap housing, each side wall having a longitudinally extending slot therein, and wherein a guide projection is formed on each side of the depress button, the guide projections being slidably engaged in respective slots in the side walls of the cap housing.
Claim 6
Dependent Claim
53 words
A depress button sprayer according to claim 4, wherein each guide projection has a planar upper surface which acts as a stop for abutting against the upper wall of the slot and a downwardly and inwardly curved side face which so acts to permit the guide projection to be snap-fitted into the slot.
Claim 7
Dependent Claim
29 words
A depress button sprayer according to claim 5, wherein each side of the depress button is provided with a pair of slits between which each guide projection is formed.
Claim 8
Dependent Claim
40 words
A depress button sprayer according to claim 2, wherein the sprayer body has a pair of support members for supporting the pivot, and the cap housing has ribs for preventing the support members from being displaced away from each other.
Claim 9
Dependent Claim
50 words
A depress button sprayer according to claim 2, wherein the lever has a piston-depressing portion which is engaged with the piston between the pivot and the depress button, the piston-depressing portion having a pair of projections, and each of the support members has a curved slot for guiding the projection.
Claim 10
Dependent Claim
148 words
A depress button sprayer comprising: a spray body provided with a cylinder having an opening at one end; a piston slidably mounted in a liquid-tight fashion in the cylinder; spring means for urging the piston outwardly of the cylinder; a nozzle in communication with the cylinder and having a dispensing hole for jetting a liquid from within the cylinder; a pivotable lever coupled to the piston for sliding the piston into the cylinder against the force of the spring means, the lever having a rounded free end; a pivot for pivotally supporting the lever in a position spaced from the axis of the piston; a cap housing for covering the spray body and the lever, the cap housing having a longitudinally extending recess at the rear upper portion thereof; and a depress button slidably received in the recess and drivingly line-contacted with the free end of the lever.
Claim 11
Dependent Claim
148 words
A depress button sprayer comprising: a spray body provided with a cylinder having an opening at one end; a piston slidably mounted in a liquid-tight fashion in the cylinder; spring means for urging the piston outwardly of the cylinder; a nozzle in communication with the cylinder and having a dispensing hole for jetting a liquid from within the cylinder; a pivotable lever coupled to the piston for sliding the piston into the cylinder against the force of the spring means, the lever having a rounded free end; a pivot for pivotally supporting the lever in a position spaced from the axis of the piston; a cap housing for covering the spray body and the lever, the cap housing having a longitudinally extending recess at the rear upper portion thereof; and a depress button slidably received in the recess and drivingly line-contacted with the free end of the lever.
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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) | 1980-12-05 | 1981-06-06 | 1981-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-05 | 1985-06-06 | 1985-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-05 | 1989-06-06 | 1989-12-06 | $7700.00 | Window Closed / Lapsed |