Claims
- 1. A snap ring plier tool including:
- (a) pairs of handle and jaw sections;
- (b) a pair of pivotally connected boss sections interconnecting the jaw and handle sections to provide a pair of plier parts;
- (c) a spring interposed between the handles and biasing them toward an open position;
- (d) one of the bosses including a coacting surface; and
- (e) a lever pivotally connected to one of the handles and having a locking position engaging the spring and the coacting surface to lock the plier parts in a closed position.
- 2. The plier tool of claim 1 wherein the lever is a lock that is automatically moved from its locking position to an unlocked position under biasing action of the spring when the lever has been in its locking position and the handles are moved from the closed position to a release position.
- 3. The plier tool of claim 1 wherein said one boss has a plurality of coacting surfaces and the lever is a ratchet lever whereby to provide a ratchet.
- 4. A plier tool comprising:
- (a) a pair of handle sections;
- (b) a pair of boss sections;
- (c) a pair of jaw sections;
- (d) a first section of each pair being operably connected together to function as a first plier part;
- (e) the second section of each pair being operably connected together to function as a second plier part;
- (f) a pivot interconnecting the first and the second plier parts for relative work performing movement between open and closed positions;
- (g) a spring operatively connected to and interposed between one of the first and one of the second sections for biasing the plier parts toward the open position;
- (h) a lever pivotally connected to a selected section and including an engagement tab, the lever being movable between plier open and closed positions;
- (i) another selected section having a coacting surface engageable by the engagement tab when the plier parts are in the closed position; and
- (j) said spring being in operative engagement with the lever at least when the plier parts are in the closed position and when the lever is in its locking position to bias the engagement tab against the coacting surface.
- 5. The plier of claim 4 wherein the lever is a lock lever.
- 6. The plier of claim 5 wherein the plier parts have a release position and wherein the spring biases the lever toward its unlocking position as the plier parts are moved from the closed to the release position.
- 7. The plier of claim 4 wherein the lever is a ratchet.
- 8. A plier tool comprising:
- (a) a pair of lever handle sections;
- (b) a pair of boss sections;
- (c) a pair of jaw sections;
- (d) a first section of each pair being operably connected together to function as a first plier part;
- (e) a second section of each pair being operably connected to function as a second plier part;
- (f) a pivot operatively interconnecting the first and second plier parts for relative work movement between open and closed positions;
- (g) a spring operatively connected to and adaptively interposed between the first and second sections for biasing the plier parts to the open position;
- (h) a locking lever pivotally mounted on a front surface of one handle section;
- (i) said lever being movable between locking and unlocking positions;
- (j) said lever having a substantially triangular shaped body portion;
- (k) said lever having an engagement tab for engagement with a selected portion of one of the plier parts when the lever is in the locked position;
- (l) said selected portion of the plier part being located on a surface opposite and near to the front surface of one handle section, and having a coacting surface coplanar with the lever and engageable with the engagement tab when the lever is in the locked position;
- (m) said engagement tab being formed to engage said coacting surface of the plier part when the lever is in the locked position;
- (n) said locking lever also including a spring engaging surface adapted for operatively engaging the spring when the lever is in the locked position;
- (o) said lever having a finger engaging tab extending from the lock lever beyond and near to a side surface of the handle section to provide for ease of manual pivoting engagement of the lever into the locked position;
- (p) said plier parts being capable of movement from the closed position to a release position upon compression of the handle sections against the spring; and
- (q) said lever being configured to minimize interference during operation and to avoid disengagement from plier locking position upon movement or accidental contact with other items.
- 9. A plier tool comprising:
- (a) a pair of lever shaped handle sections;
- (b) a pair of interlocking boss sections;
- (c) a pair of jaw sections;
- (d) a first section of each pair being operably connected together to function as a first plier part;
- (e) a second section of each pair being operably connected together to function as a second plier part;
- (f) a pivot operatively interconnecting the first and second plier parts for relative pivotal, work performing, variable movement between open and closed positions;
- (g) a spring operatively connected to and adaptively interposed between the first and second sections for biasing the plier parts to the open position;
- (h) an apertured locking lever pivotally mounted on one handle section by a lock pivot projecting through a lever aperture;
- (i) said lever being pivotally movable between locking and unlocking positions;
- (j) said lever having a substantially triangular shaped body portion;
- (k) said lever also having an engagement tab for locking engagement with a selected portion of one plier part when the parts are in the closed position and the lever is in the locked position;
- (l) said selected portion of the plier part having a coacting surface coplanar with the lever and engageable with the engagement tab when the plier parts are in the closed position;
- (m) said locking lever also including a spring engaging surface adapted for operatively engaging the spring when the lever is in the locked position;
- (n) said lever having a finger engaging tab extending from the lock lever beyond and near to a side surface of the one handle section to provide for ease of manual pivoting engagement of the lever into the closed position;
- (o) said plier parts being capable of movement from the closed position to a plier release position upon compression of the handle sections against the spring;
- (p) said lever being pivotable into operative engagement with said coacting surface and spring biased into such engagement when in the locking position, and automatically pivotable out of engagement with the coacting surface and spring biased to the unlocking position upon movement of the plier parts to the release position; and
- (q) said lever being configured to minimize interference with the lever during operation and avoid disengagement from the closed position upon movement or accidental contact with other items.
- 10. A retaining ring plier selectively for use with either internal or external rings comprising:
- (a) pivotably interconnected pairs of jaw and handle members;
- (b) each of said members including a boss;
- (c) a first two of the bosses including laterally extending guide surfaces;
- (d) a pair of slidable latch members each in slidable guided relationship with an associated one of the grooves;
- (e) a second two of the bosses each including a spaced pair of latch member engaging surfaces adapted selectively to engage an associated latch member whereby to provide member interconnection;
- (f) each of said latch members being movable in its slidably guided relationship between first and second member interconnected positions;
- (g) one of the jaws and one of the handles and the other of the jaws and the other of the handles being latch member interconnected when the latch members are in their first positions to provide an internal ring plier;
- (h) said one pair and said other handle and said other jaw and said one handle being respectively interconnected when the latch members are in their second positions to provide an external ring plier;
- (i) said latch members each having a first prong manually accessible when its latch member is in its first position to permit movement to the respective latch member second positions without resort to the use of a tool;
- (j) said latch members each including a second prong manually accessible when its latch member is in its second position to permit movement to the respective first latch member position without resort to the use of a tool;
- (k) a ratchet lever pivotally connected to one of the members; and
- (l) another of the members including a plurality of coacting surfaces which are sequentially engageable by a pawl to provide a ratchet.
- 11. The plier of claim 10 wherein a spring is interposed between the handles which spring applies biasing forces to the handles in a handle opening direction, said one member is a handle member and the pawl and spring are coactable.
DESCRIPTION
This application is a continuation-in-part of prior U.S. application Ser. No. 669,672 filed Nov. 8, 1984 under the title Retaining Ring Tool.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2013892 |
Mar 1970 |
DEX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
669672 |
Nov 1984 |
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