Patent US3750283A successfully refreshed from Google Patents.
US3750283A
Expired / Lapsed
US
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Blade attachment means for saber saw assembly
Assignee: TETER HOFFMAN MARY LYNN
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Filing: 1970-11-09
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Granted: 1973-08-07
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Expires: 1990-11-09
Abstract
Abstract Means for attaching a saber saw blade to the reciprocating portion of a saber saw assembly, wherein the blade can be releasably secured to the reciprocating portion which has means biased in a manner to hold the blade in such position. A number of embodiments of the attachment means provide for quick coupling and release of a saber saw blade to the assembly. In one group of embodiments, a blade holding means utilizes a torsion spring and in a second group of embodiments, the attachment means utilizes a compression spring. The support for the attachment means can be provided with any one of a number of improved abutments for engaging a workpiece. The support can be provided with means for moving the blade in a direction away from the kerf in a workpiece.
Inventors
- 👤 S Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:28
CPC Classifications
B; B23; B23D; B23D49/00; B23D49/10; B23D49/16; B23D49/162; B23D49/167; B23D51/00; B23D51/08; B23D51/10; B23D57/00; B23D57/0076; Y; Y10; Y10T; Y10T83/00; Y10T83/929; Y10T83/9457; Y10T83/9473
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
116 words
In an assembly for use with a saber saw blade having a projection-receiving recess at one end portion thereof: a member adapted to be reciprocated along a straight-line path; means including a lateral projection carried by the member for coupling said one end portion of said saber saw blade thereto with the projection being receivable within the recess of the blade when the latter is moved into an operative position with respect to said member; means independent of said projection and carried by the member for movement into and out of a blade-holding position for holding said end portion of the blade on the member; and means biasing said holding means into said blade-holding position thereof.
Claim 2
Dependent Claim
116 words
In an assembly for use with a saber saw blade having a projection-receiving recess at one end portion thereof: a member adapted to be reciprocated along a straight-line path; means including a lateral projection carried by the member for coupling said one end portion of said saber saw blade thereto with the projection being receivable within the recess of the blade when the latter is moved into an operative position with respect to said member; means independent of said projection and carried by the member for movement into and out of a blade-holding position for holding said end portion of the blade on the member; and means biasing said holding means into said blade-holding position thereof.
Claim 3
Dependent Claim
49 words
In an assembly as set forth in claim 1, wherein the member has an elongated recess for receiving the end portion of the blade, whereby the blade is coupled to the member, said bias means being operable to bias the holding means in a direction transversely of the recess.
Claim 4
Dependent Claim
22 words
Apparatus as set forth in claim 2, wherein said recess in the member comprises a slot extending thereinto from one end thereof.
Claim 5
Dependent Claim
115 words
Apparatus as set forth in claim 1, wherein said member has a slot extending thereinto from one end thereof, said holding means including a pin movable into and out of an operative position across said recess, means biasing the pin in a direction away from the recess, a sleeve shiftably mounted on the member for movement longitudinally thereof, said bias means including a compression spring operable to bias the sleeve in one direction along the member, stop means for limiting the movement of the sleeve in said one direction, the sleeve having an inner cam surface engageable with the pin for moving the latter into its operative position as the sleeve moves in said direction.
Claim 6
Dependent Claim
85 words
In a saber saw assembly: a member adapted to be reciprocated along a straight-line path; means on the member for coupling one end portion of a saber saw blade thereto; a portion rotatably mounted on the member for movement into and out of a blade-holding position for holding said end portion of the blade on the member; and a torsion spring surrounding a part of said member and operable to apply a torque to said portion to bias the same into said blade-holding position thereof.
Claim 7
Dependent Claim
85 words
In a saber saw assembly: a member adapted to be reciprocated along a straight-line path; means on the member for coupling one end portion of a saber saw blade thereto; a portion rotatably mounted on the member for movement into and out of a blade-holding position for holding said end portion of the blade on the member; and a torsion spring surrounding a part of said member and operable to apply a torque to said portion to bias the same into said blade-holding position thereof.
Claim 8
Dependent Claim
106 words
In a saber saw assembly: a member having a side face provided with a blade-receiving recess therein for coupling one end portion of a saber saw blade thereto, said member adapted to be reciprocated along a straight-line path; means including a pair of spaced retaining strips rotatably carried by the member and movable from first locations clearing the recess to permit a blade to be received therein to second locations extending transversely of the recess for releasably holding the blade therein; and a torsion spring surrounding said member and operable to apply a torque to said strips to bias the same into said second locations thereof.
Claim 9
Dependent Claim
106 words
In a saber saw assembly: a member having a side face provided with a blade-receiving recess therein for coupling one end portion of a saber saw blade thereto, said member adapted to be reciprocated along a straight-line path; means including a pair of spaced retaining strips rotatably carried by the member and movable from first locations clearing the recess to permit a blade to be received therein to second locations extending transversely of the recess for releasably holding the blade therein; and a torsion spring surrounding said member and operable to apply a torque to said strips to bias the same into said second locations thereof.
Claim 10
Dependent Claim
123 words
In a saber saw assembly: an elongated member having a slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, said member aDapted to be reciprocated along a straight-line path; a sleeve rotatably carried by the member and having a pair of diametrically opposed inner cam surfaces; a pair of balls within the sleeve on opposite sides of the slot; and a torsion spring surrounding said member and operable to bias said spring in a direction to urge said surfaces into engagement with the balls to force the latter toward the slot, whereby the balls can move into frictional engagement with opposite sides of a blade in the slot to thereby hold the blade therein.
Claim 11
Dependent Claim
123 words
In a saber saw assembly: an elongated member having a slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, said member aDapted to be reciprocated along a straight-line path; a sleeve rotatably carried by the member and having a pair of diametrically opposed inner cam surfaces; a pair of balls within the sleeve on opposite sides of the slot; and a torsion spring surrounding said member and operable to bias said spring in a direction to urge said surfaces into engagement with the balls to force the latter toward the slot, whereby the balls can move into frictional engagement with opposite sides of a blade in the slot to thereby hold the blade therein.
Claim 12
Dependent Claim
128 words
In a saber saw assembly: an elongated member having a blade-receiving slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, said member adapted to be reciprocated along a straight-line path; a sleeve rotatably carried by the member and having a tapered, inner surface decreasing in diameter as said one end of the mmber is approached, said sleeve having a slot therein alignable with the slot of said member and being movable from a first position in which the slots are in alignment with each other to a second, blade-holding position in which the slots are out of alignment with each other; and a torsion spring surrounding said member and being operable to bias the sleeve into said second position.
Claim 13
Dependent Claim
128 words
In a saber saw assembly: an elongated member having a blade-receiving slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, said member adapted to be reciprocated along a straight-line path; a sleeve rotatably carried by the member and having a tapered, inner surface decreasing in diameter as said one end of the mmber is approached, said sleeve having a slot therein alignable with the slot of said member and being movable from a first position in which the slots are in alignment with each other to a second, blade-holding position in which the slots are out of alignment with each other; and a torsion spring surrounding said member and being operable to bias the sleeve into said second position.
Claim 14
Dependent Claim
164 words
In a saber saw assembly: an elongated member having a central, blade-receiving slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, and a side bore communicating with and extending laterally of said slot, said member adapted to be reciprocated along a straight-line path; an element in said bore and movable into and out of a position extending across the slot; a shiftable guide pin carried by the member on the opposite side of the slot from said bore; means urging said guide pin toward said slot; a sleeve rotatably mounted on said member and having an inner cam surface for biasing the element into an operative position extending across the slot for holding an end portion of the blade on the member; and a torsion spring surrounding said member and coupled to the sleeve to bias the same into said operative position, said spring having a bias force greater than that of said urging means.
Claim 15
Dependent Claim
164 words
In a saber saw assembly: an elongated member having a central, blade-receiving slot extending thereinto from one end thereof for coupling one end portion of a saber saw blade thereto, and a side bore communicating with and extending laterally of said slot, said member adapted to be reciprocated along a straight-line path; an element in said bore and movable into and out of a position extending across the slot; a shiftable guide pin carried by the member on the opposite side of the slot from said bore; means urging said guide pin toward said slot; a sleeve rotatably mounted on said member and having an inner cam surface for biasing the element into an operative position extending across the slot for holding an end portion of the blade on the member; and a torsion spring surrounding said member and coupled to the sleeve to bias the same into said operative position, said spring having a bias force greater than that of said urging means.
Claim 16
Dependent Claim
143 words
In a saber saw assembly: a tubular member having an open end and adapted to be reciprocated along a straight-line path; a sleeve rotatably carried in said open end and having a pair of opposed grooves and a projection adjacent to each groove, respectively, for coupling one end portion of a saber saw blade to the member; means holding said sleeve in said open end; a torsion spring surrounding the member and being coupled with said sleeve for biasing the same in one direction about the longitudinal axis of the member; and a retainer element having a blade-receiving slot, said element being movable into a position with said slot thereof aligned with said axis and being operable to hold a blade against rotation with the sleeve relative to the member when the blade extends through said slot and is coupled to said sleeve.
Claim 17
Dependent Claim
143 words
In a saber saw assembly: a tubular member having an open end and adapted to be reciprocated along a straight-line path; a sleeve rotatably carried in said open end and having a pair of opposed grooves and a projection adjacent to each groove, respectively, for coupling one end portion of a saber saw blade to the member; means holding said sleeve in said open end; a torsion spring surrounding the member and being coupled with said sleeve for biasing the same in one direction about the longitudinal axis of the member; and a retainer element having a blade-receiving slot, said element being movable into a position with said slot thereof aligned with said axis and being operable to hold a blade against rotation with the sleeve relative to the member when the blade extends through said slot and is coupled to said sleeve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |