US3763962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oiler apparatus for power tools
Assignee: Desa International LLC
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Filing: 1972-04-11
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Granted: 1973-10-09
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Expires: 1992-04-11
Abstract
Abstract An oiler apparatus for power tools automatically supplies oil to the moving parts of the tool when the tool is actuated and may be manually operated to supply oil when desired. The oiler apparatus includes a plunger reciprocably mounted within a casing having inlet and outlet means for supplying oil to the casing and for conducting oil from the casing to the parts to be oiled. Linkage means extends from the plunger to adjacent the throttle trigger or other actuating means for operating the tool. The linkage means is engaged by the trigger when the trigger is pulled to operate the tool whereby the linkage and the plunger are moved to pump oil through the outlet means of the casing. A manual actuator which is also engageable with the linkage means is mounted adjacent the trigger, and the linkage and the plunger can be moved by the manual actuator independently of the trigger.
Inventors
- 👤 A Gottlieb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:01
CPC Classifications
B; B27; B27B; B27B17/00; B27B17/12; Y; Y10; Y10T; Y10T83/00; Y10T83/263
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
261 words
In a chain saw having a housing, an elongated guide bar mounted on the housing and extending therefrom, an endless saw chain trained around the guide bar, power means within the housing for moving the saw chain around the guide bar, and trigger means movably mounted on the housing for actuating the power means, an improved chain oiling apparatus comprising a casing, inlet means for supplying oil to the casing, outlet means for supplying oil from the casing to the guide bar, plunger means within the casing and being movable toward the outlet means to force oil from the casing through the outlet means, linkage means for moving the plunger within the casing extending from the plunger and having an end portion adjacent the trigger, bell crank means rotatably mounted on the housing and providing a first lever portion extending from the housing and a second lever portion within the housing, rotation of the first lever portion causing rotation of the second lever portion, the end portion of the linkage means being connected to the second lever portion for movement therewith whereby the plunger means may be moved toward the outlet means of the casing by rotating the first lever portion of the bell crank means, the trigger means being engageable with the end portion of the linkage means when the trigger means is moved to actuate the power means to move the linkage means so that the plunger is moved toward the outlet means and oil is forced by the plunger means through the outlet means to the guide bar.
Claim 2
Dependent Claim
261 words
In a chain saw having a housing, an elongated guide bar mounted on the housing and extending therefrom, an endless saw chain trained around the guide bar, power means within the housing for moving the saw chain around the guide bar, and trigger means movably mounted on the housing for actuating the power means, an improved chain oiling apparatus comprising a casing, inlet means for supplying oil to the casing, outlet means for supplying oil from the casing to the guide bar, plunger means within the casing and being movable toward the outlet means to force oil from the casing through the outlet means, linkage means for moving the plunger within the casing extending from the plunger and having an end portion adjacent the trigger, bell crank means rotatably mounted on the housing and providing a first lever portion extending from the housing and a second lever portion within the housing, rotation of the first lever portion causing rotation of the second lever portion, the end portion of the linkage means being connected to the second lever portion for movement therewith whereby the plunger means may be moved toward the outlet means of the casing by rotating the first lever portion of the bell crank means, the trigger means being engageable with the end portion of the linkage means when the trigger means is moved to actuate the power means to move the linkage means so that the plunger is moved toward the outlet means and oil is forced by the plunger means through the outlet means to the guide bar.
Claim 3
Dependent Claim
73 words
The apparatus of claim 1 in whIch the end portion of the linkage means extends generally parallel to the axis of rotation of the bell crank means, the trigger means being rotatable about an axis extending generally parallel to the axis of rotation of the bell crank means and including an actuating portion engageable with the end portion of the linkage means when the trigger means is rotated to actuate the power means.
Claim 4
Dependent Claim
181 words
In a chain saw having a housing, an elongated guide bar mounted on the housing and extending therefrom, an endless saw chain trained around the guide bar, power means within the housing for moving the saw chain around the guide bar, and trigger means movably mounted on the housing for actuating the power means, an improved chain oiling apparatus comprising a casing, inlet means for supplying oil to the casing, outlet means for supplying oil from the casing to the guide bar, plunger means within the casing and being movable toward the outlet means to force oil from the casing through the outlet means, linkage means for moving the plunger within the casing extending from the plunger and having an end portion adjacent the trigger, the trigger means being engageable with the end portion of the linkage means when the trigger means is moved to actuate the power means to move the linkage means so that the plunger means is moved toward the outlet means and oil is forced by the plunger means through the outlet means to the guide bar.
Claim 5
Dependent Claim
181 words
In a chain saw having a housing, an elongated guide bar mounted on the housing and extending therefrom, an endless saw chain trained around the guide bar, power means within the housing for moving the saw chain around the guide bar, and trigger means movably mounted on the housing for actuating the power means, an improved chain oiling apparatus comprising a casing, inlet means for supplying oil to the casing, outlet means for supplying oil from the casing to the guide bar, plunger means within the casing and being movable toward the outlet means to force oil from the casing through the outlet means, linkage means for moving the plunger within the casing extending from the plunger and having an end portion adjacent the trigger, the trigger means being engageable with the end portion of the linkage means when the trigger means is moved to actuate the power means to move the linkage means so that the plunger means is moved toward the outlet means and oil is forced by the plunger means through the outlet means to the guide bar.
Claim 6
Dependent Claim
53 words
The apparatus of claim 3 including linkage-moving means movably mounted on the housing adjacent the end portion of the linkage means, the linkage-moving means being engageable with the linkage means whereby the linkage means can be moved to move the plunger means toward the outlet means independently of movement of the trigger means.
Claim 7
Dependent Claim
47 words
The apparatus of claim 3 including a lever rotatably mounted on the housing adjacent the end portion of the linkage means, rotation of the lever causing movement of the linkage means to move the plunger means toward the outlet means independently of movement of the trigger means.
Claim 8
Dependent Claim
133 words
An oiling apparatus for a power tool having a movable work part, power means for moving the work part and movable control means operatively associated with the power means for varying the speed of the work piece comprising an oil pump having a casing and a plunger movably mounted within the casing, the casing being provided with oil inlet means and oil outlet means, movement of the plunger toward the oil outlet means forcing oil from the casing through the outlet means, linkage means extending from the plunger to adjacent the control means, the linkage means being movable by the control means when the control means is moved to increase the speed of the work part to move the plunger toward the oil outlet means and force oil through the oil outlet means.
Claim 9
Dependent Claim
133 words
An oiling apparatus for a power tool having a movable work part, power means for moving the work part and movable control means operatively associated with the power means for varying the speed of the work piece comprising an oil pump having a casing and a plunger movably mounted within the casing, the casing being provided with oil inlet means and oil outlet means, movement of the plunger toward the oil outlet means forcing oil from the casing through the outlet means, linkage means extending from the plunger to adjacent the control means, the linkage means being movable by the control means when the control means is moved to increase the speed of the work part to move the plunger toward the oil outlet means and force oil through the oil outlet means.
Claim 10
Dependent Claim
27 words
The apparatus of claim 6 including linkage-moving means mounted on the power tool adjacent the control means for moving the linkage means independently of the control means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |