Contoured jaw extractor tool and method
OwnerKenneth Perssoninventor
Life of this patent
Estimating the term…
Abstract
An extractor tool and method of the present disclosure are provided for extracting from a recess such as a keyway a removable item such as a broken key portion of a cut key where the broken key portion includes at least one key bitting slope. The extractor tool of the present disclosure includes a handle member; and a tool member having a first end for connecting to the handle member, and a second and distal end for inserting into the keyway containing the broken key portion. The second and distal end includes a contoured jaw section contoured for following the at least one key bitting slope on the broken key portion and for maximizing a contact area between the contoured jaw section and the key bitting slope.
Claims40
An extractor tool for extracting, from a keyway, a broken key portion of a cut key, the broken key portion including a contact surface area, the extractor tool comprising a single-axis acting device including:
- (a) a handle member;
- and
- (b) a tool member having a first end for connecting to said handle member, and a second and distal end for inserting into the keyway containing the broken key portion, said second and distal end including a contoured jaw section for acting along a single axes in contacting said contact surface area on said broken key portion, and for maximizing a contact area between said contoured jaw section and said contact surface area, said contoured jaw section being contoured to follow said contact surface area on said broken key portion, and including friction means covering a wide area of said contoured jaw section.
An extractor tool comprising:
- (a) a mid-portion having a first end and a second and opposite end;
- (b) a handle portion connected to said first end of said mid-portion and extending rearwards of said mid-portion;
- and
- (c) a tool portion connected to, and extending forwardly from, said second and opposite end of said mid-portion, said tool portion having a longitudinal axis, and a distal end including an extracting jaw having a friction surface for contacting and gripping a broken key portion within a keyway, said friction surface being angled relative to said longitudinal axis, and being contoured, for maximizing contact thereof with a slope of a key bitting on the broken key portion.
An extractor tool for extracting a removable piece from within a recess, the extractor tool comprising:
- (a) a handle portion extending longitudinally and having a vertical axis and a first longitudinal axis;
- (b) a mid-portion having a second longitudinal axis, said mid-portion being connected to said handle portion and including a bend extending at a first angle to said vertical axis for enhancing positioning of a tool portion by leveraging manipulation of said handle portion;
- and
- (c) a tool portion connected to, and extending forwardly from said mid-portion and at a second angle to said second longitudinal axis, said tool portion having a first side surface, a second and opposite side surface, a third longitudinal axis substantially parallel to said first longitudinal axis, and a distal end including an extracting jaw having a friction surface angled relative to said third longitudinal axis for contacting and gripping the removable piece within said recess.
An extractor tool for extracting, from a keyway, a broken key portion of a cut key, the broken key portion including at least two opposite key bitting slopes, the extractor tool comprising:
- (a) a dual-axes acting mechanism including two single-axis acting devices attached together pivotably for opening and closing movements in a scissors manner, (b) an acting axis of one of said two single-axis acting devices as attached being offset from and apposite relative to that of the other of said two single-axis acting devices;
- (c) each said single-axis acting device having:
- (i) a handle member and;
- (ii) a tool member, said tool member including a first end for connecting to said handle member, and a second and distal end for inserting into the keyway containing the broken key portion, said second and distal end including a contoured jaw section contoured to follow said one of said at least two opposite key bitting slopes on said broken key portion, and said contoured jaw section including friction means, thereby enabling said dual-axes mechanism to make two offset and apposite jaw-contacts, one with each key bitting slope on each edge of a double-edge broken key portion for extraction.
A method of extracting from a lock keyway having two spaced apart opposing side surfaces, two spaced apart opposing edges, a series of lock tumblers, and a longitudinal axis, a broken key portion, the broken key portion including a broken end and a contact surface area such as a key bitting having a key bitting slope, the method comprising:
- (a) longitudinally inserting into said lock keyway a single-axis acting device having a distal tip, a first edge, and a second edge including an extracting jaw having a friction surface contoured relative to said key bitting slope for maximizing contact between said friction surface and said key bitting slope within said lock keyway;
- (b) contacting said broken end of said broken key portion with said distal tip;
- (c) moving said first edge of said single-axis acting device towards one of said two spaced apart and opposing edges of said lock keyway;
- (d) further moving said distal tip and said contoured friction surface longitudinally into said keyway and said contoured friction surface into a contoured mating relationship with a surface area of the broken key portion;
- and
- (e) simultaneously pressing said contoured friction surface into said surface area of the broken key portion and pulling said single-axis acting device longitudinally back out of said keyway, thereby gripping and extracting said broken key portion out of said keyway.
An extractor tool for extracting, from a recess, removable items including heavy items and items that can rotate within the recess, the extractor tool comprising:
- (a) a triple-axes acting mechanism including three single-axis acting devices attached together pivotably for opening and closing movements in a scissors manner,
- (b) an acting axis of one of said three single-axis acting devices as attached being offset from and apposite relative to acting axes of the other two of said three single-axis acting devices;
- (c) each said single-axis acting device having:
- (i) a handle member and;
- (ii) a tool member, said tool member including a first end for connecting to said handle member, and a second and distal end for inserting into the recess containing the removable item, said second and distal end including a contoured jaw section for maximizing a contact area between said contoured jaw section and said removable item, said contoured jaw section including friction means covering a wide area of said contoured jaw section, thereby enabling said triple-axes mechanism to make three offset jaw-contacts, one contact across from two contacts with said removable item for removal in a torque-free manner.
Dependencies are inferred from the claim text.