Patent US4524518A successfully refreshed from Google Patents.
US4524518A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Utility knife
Assignee: Stanley Works
•
Filing: 1983-06-13
•
Granted: 1985-06-25
•
Expires: 2003-06-13
Abstract
Abstract A utility knife comprises a pair of complementary opposing elongated body sections. The body sections are pivotally connected intermediate handle and blade retaining portions. The body sections interlock by a tongue/slot engagement. A releasable locking means in the handle portion employs a button slidable in transverse openings.
Inventors
- 👤 Robert F. West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:56
CPC Classifications
B; B26; B26B; B26B5/00; B26B5/005
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
314 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections having opposed mating surfaces for mating engagement along a parting line and exterior surfaces forming a handle portion and blade enclosure means to interiorly receive and at least partially enclose said detachable blade; pivot means connecting said sections so that said sections are pivotally moveable between an open position and a closed position, said pivot means extending transverse of said opposed surfaces and being intermediate said blade enclosure means and handle portion; said sections cooperating in the closed position to provide the blade enclosure means, said blade enclosure means terminating at a front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure means and being abuttable by the back edge of a blade received in said enclosure means, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith, a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship; and a locking means in the handle portion to releasably secure said sections in a closed position.
Claim 2
Dependent Claim
314 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections having opposed mating surfaces for mating engagement along a parting line and exterior surfaces forming a handle portion and blade enclosure means to interiorly receive and at least partially enclose said detachable blade; pivot means connecting said sections so that said sections are pivotally moveable between an open position and a closed position, said pivot means extending transverse of said opposed surfaces and being intermediate said blade enclosure means and handle portion; said sections cooperating in the closed position to provide the blade enclosure means, said blade enclosure means terminating at a front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure means and being abuttable by the back edge of a blade received in said enclosure means, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith, a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship; and a locking means in the handle portion to releasably secure said sections in a closed position.
Claim 3
Dependent Claim
48 words
The knife holder of claim 1 wherein said tongue includes an abutment surface which engages the slot, said abutment surface being inclined at an angle ranging from approximately 10 degrees to 30 degrees relative to a plane of separation defined by said opposed surfaces of the body sections.
Claim 4
Dependent Claim
29 words
The knife holder of claim 1 wherein the blade enclosure means further comprises a projection adapted to secure a blade in a longitudinal position relative to said blade opening.
Claim 5
Dependent Claim
18 words
The knife holder of claim 1 wherein the tongue and slot are spaced rearwardly from the blade opening.
Claim 6
Dependent Claim
16 words
The knife holder of claim 1 wherein the pivot means is a spring biased pivot joint.
Claim 7
Dependent Claim
24 words
The knife holder of claim 1 further comprising a receptacle for storing blades, said receptacle located in said handle portion between opposing body sections.
Claim 8
Dependent Claim
46 words
The knife holder of claim 1 wherein the body sections have alignable transverse openings, said locking means comprising a button received in one transverse opening and transversely slidable to be partially received in the other transverse opening to thereby secure the sections in a closed position.
Claim 9
Dependent Claim
24 words
The knife holder of claim 7 wherein a portion of the button projects outwardly from the handle portion when the locking means is released.
Claim 10
Dependent Claim
38 words
The knife holder of claim 5 wherein the blade opening has a uniform width, the blade opening width being dimensioned to be slightly less than the thickness of a blade to be retained by said blade enclosure means.
Claim 11
Dependent Claim
50 words
The knife holder of claim 9 wherein said holder is adapted so that upon mounting a blade in the blade enclosure means and pivotally moving the sections to a closed position, the opposing body sections are forced outwardly relative to each other in the vicinity of the blade enclosure portion.
Claim 12
Dependent Claim
35 words
The knife portion of claim 10 further comprising a blade mounted in said blade enclosure means, a portion of said blade extending through said blade opening to present a cutting edge forward of said tip.
Claim 13
Dependent Claim
27 words
The knife holder of claim 11 wherein the blade opening has a width ranging between approximately 0 to 0.008 inches less than the thickness of the blade.
Claim 14
Dependent Claim
24 words
The knife holder of claim 11 wherein the body sections are biased to contact against the blade to firmly secure the blade in position.
Claim 15
Dependent Claim
278 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections adapted for mating engagement along a parting line and having exterior surfaces forming a handle portion and a blade enclosure means to interiorly receive and at least partially enclose said detachable blade; connecting means intermediate said blade enclosure means and handle portion to securely connect said body sections in a closed position; said body sections cooperating in the closed position to provide said blade enclosure means, said enclosure means terminating in the front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure portion and being abuttable by the back edge of a blade received in said enclosure portion, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; and the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith, a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship.
Claim 16
Dependent Claim
278 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections adapted for mating engagement along a parting line and having exterior surfaces forming a handle portion and a blade enclosure means to interiorly receive and at least partially enclose said detachable blade; connecting means intermediate said blade enclosure means and handle portion to securely connect said body sections in a closed position; said body sections cooperating in the closed position to provide said blade enclosure means, said enclosure means terminating in the front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure portion and being abuttable by the back edge of a blade received in said enclosure portion, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; and the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith, a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship.
Claim 17
Dependent Claim
56 words
The knife holder of claim 14 further comprising a blade mounted in said blade enclosure portion so that in the closed position, a portion of said blade extends through the blade opening to present a cutting edge forward of said tip and the body sections clamp against the blade to firmly secure the blade in position.
Claim 18
Dependent Claim
24 words
The knife holder of claim 15 wherein the reception of the tongue in the slot forces the body sections to clamp against the blade.
Claim 19
Dependent Claim
274 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections adapted for mating engagement along a parting line and having exterior surfaces forming a handle portion and a blade enclosure means to interiorly receive and at least partially enclose said detachable blade; connection means extending transversely to said body sections to connect said sections in a closed position; said sections cooperating in the closed position to provide said blade enclosure means, said enclosure means terminating at a front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure portion and being abuttable by the back edge of a blade received in said enclosure portion, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; and the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith and a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship.
Claim 20
Dependent Claim
274 words
A knife holder for a utility knife employing a detachable blade of a type having a primary cutting edge and an opposite back edge, comprising: a pair of complementary opposing elongated body sections adapted for mating engagement along a parting line and having exterior surfaces forming a handle portion and a blade enclosure means to interiorly receive and at least partially enclose said detachable blade; connection means extending transversely to said body sections to connect said sections in a closed position; said sections cooperating in the closed position to provide said blade enclosure means, said enclosure means terminating at a front tip of said sections to define a blade opening; one of said body sections having an elongated shoulder projecting transversely across the parting line and extending rearwardly from said tip to form a blade canopy, said canopy shoulder having a first exterior surface generally conforming with the exterior surfaces of said sections when said holder is in the closed position, said canopy having a second interior surface generally opposite said first surface partially defining said blade enclosure portion and being abuttable by the back edge of a blade received in said enclosure portion, and a slot on the opposite side of said parting line from said one body section so as to overlie said other body section in the closed position; and the exterior surface of said other body section forming a recess complementary with said canopy shoulder for mating reception therewith and a freely projecting tongue extending outwardly from said recess forming exterior surface toward said shoulder for cooperative reception in said slot to interlock said body sections in close interfitting relationship.
Claim 21
Dependent Claim
19 words
The knife holder of claim 14 further comprising locking means to releasably secure said sections in a closed position.
References Cited (Backward Citations)
US953421A
Cited
US1629412A
Cited
US1829499A
Cited
US1997992A
Cited
US2376887A
Cited
US2478668A
Cited
US3380159A
Cited
US3604113A
Cited
US3660895A
Cited
GB1413679A
Cited
US3927473A
Cited
US3906625A
Cited
US3942249A
Cited
US4005525A
Cited
US4261104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |