Claims
- 1. A hand-held, electrically-driven staple driving tool comprising:
- (a) a housing;
- (b) an electromagnetic solenoid coil mounted to said housing, said coil having a central hole;
- (c) means for energizing said solenoid coil;
- (d) a magnetizable primary drive plunger centrally aligned with the hole of said solenoid coil, said primary drive plunger being free to move in a linear direction from an extended position to a retracted position into said central hole of said solenoid coil upon energization of said solenoid coil;
- (e) means for urging said primary drive plunger from said retracted position to said extended position;
- (f) a mainframe assembly mounted to said housing;
- (g) a staple magazine;
- (h) means for mounting said staple magazine to said mainframe assembly in a predetermined position;
- (i) a generally straight staple driving knife positioned outboard of said solenoid coil and oriented generally parallel to the linear direction of motion of said primary drive plunger and non-axially aligned with said primary drive plunger; and
- (j) a drive beam, said drive beam being positioned above and oriented transverse to the direction of motion of said primary drive plunger and having a first end and a second end, said second end being operatively connected to the upper end of said primary drive plunger and said first end being operatively connected near the upper end of said staple driving knife so that motion of said primary drive plunger in a generally linear direction between said extended position and said retracted position causes an approximately simultaneous and equal motion of said staple driving knife in a direction generally parallel to the direction of motion of said primary drive plunger; and
- (k) a guide shaft fixedly mounted to the housing and positioned between said primary drive plunger and said staple driving knife, said guide shaft being slidably received into a hole in said drive beam between said primary drive plunger and said staple driving knife to guide said drive beam in an up and down path.
- 2. The staple driving tool as defined in claim 1, wherein said housing comprises a plurality of sides, at least two of said sides being connected together by a live hinge.
- 3. The staple driving tool as defined in claim 1, wherein said housing has an integral guide bushing for guiding the staple driving knife in a linear direction.
- 4. The staple driving tool defined in claim 3, wherein said solenoid coil further comprises a radially extending flange at its upper axial end, said flange having a central hole adapted to permit said plunger to be impelled therethrough and an edge adjacent to the staple driving knife and further opposed to and vertically offset from said bushing to guide said staple driving knife in a linear direction.
- 5. The staple driving tool as defined in claim 1, wherein said magazine includes an elongated staple driving chute at the front end of said staple magazine, said chute extending substantially below the bottom of said staple magazine.
- 6. The staple driving tool as defined in claim 1, wherein said solenoid coil further comprises a radially extending flange at its upper axial end, said flange having a central hole adapted to permit said plunger to be impelled therethrough, said flange further having means thereon for fixedly receiving an end of said guide shaft.
- 7. A hand-held, power driven staple driving tool comprising:
- (a) a housing;
- (b) a primary drive member adapted to be moved between extended and retracted positions;
- (c) means for urging said primary drive member from said retracted position to said extended position;
- (d) impelling means mounted to said housing for impelling said primary drive member in a generally linear direction from said extended position to said retracted position against the force of said urging means;
- (e) means for actuating said impelling means;
- (f) a mainframe assembly mounted to said housing;
- (g) a staple magazine;
- (h) means for mounting said staple magazine to said mainframe assembly in a predetermined position;
- (i) a staple driving knife, said knife having an upper end, a lower end and a generally straight portion positioned outboard of said impelling means, non-axially aligned with said primary drive member and oriented with its major dimension generally parallel to the direction of motion of said primary drive member; and
- (j) means for operatively connecting said straight portion of said knife to said primary drive member drive member above said impelling means so that when said primary drive member is impelled, the movement of said primary drive member in a generally linear direction simultaneously causes an approximately equal and generally linear motion of said staple driving knife in generally the same direction as said primary drive member, said means for operatively connecting said knife to said primary drive member comprising a drive beam positioned above and oriented transverse to the direction of motion of said primary drive member, and having a first end and a second end, said first end of said drive beam being operatively connected to said knife near the upper end of said generally straight portion, and said second end of said drive beam being operatively connected to said primary drive member; and
- (k) a guide shaft fixedly mounted to the housing and positioned between said primary drive plunger and said staple driving knife, said guide shaft being slidably received into a hole in said drive beam between said primary drive plunger and said staple driving knife to guide said drive beam in an up and down path.
- 8. The staple driving tool as defined in claim 7, wherein said housing has an integral guide bushing for guiding the staple driving knife in a linear direction.
- 9. The staple driving tool as defined in claim 7, wherein said generally straight portion of said knife has an upper and a lower end, and wherein said means for operatively connecting said knife to said primary drive member comprises a drive beam positioned above and oriented transverse to the direction of motion of said primary drive member, said drive beam having a first end and a second end, said first end being operatively connected to said knife near the upper end of said generally straight portion, and said second end of said drive beam being operatively connected to said primary drive member.
- 10. The staple driving tool as defined in claim 7, wherein said tool includes an elongated staple driving chute at the front end of said mainframe assembly, said chute extending substantially below the bottom of said staple magazine.
- 11. A hand-held, electrically-driven staple driving tool comprising:
- (a) a housing;
- (b) an electromagnetic solenoid coil mounted to said housing, said coil having a central hole;
- (c) means for energizing said solenoid coil;
- (d) a drive beam having an opening of a predetermined inside diameter;
- (e) a magnetizable primary drive plunger centrally aligned with the hole of said solenoid coil, said primary drive plunger being free to move in a linear direction from an extended position to a retracted position into said central hole of said solenoid coil upon energization of said solenoid coil, said primary drive plunger having a hollow upper end, said upper end having a throat portion which is adapted to be recrived into said opening in said drive beam and a shoulder portion below and adjacent to said throat portion, said shoulder portion having a diameter greater than the outside diameter of said throat portion and greater than the inside diameter of the opening in said drive beam, said plunger further having an expanded lip portion above said throat portion, said lip portion being expanded to a diameter larger than said opening in said drive beam so that when said drive beam is received onto said throat portion and abutted against said shoulder and said lip expanded, said expanded lip retains said drive beam between said lip and said shoulder;
- (f) means for urging said primary drive plunger from said retracted position to said extended position;
- (g) a mainframe assembly mounted to said housing;
- (h) a staple magazine;
- (i) means for mounting said staple magazine to said mainframe assembly in a predetermined position;
- (j) a generally straight staple driving knife positioned outboard of said solenoid coil and oriented generally parallel to the linear direction of motion of said primary drive plunger and non-axially aligned with said primary drive plunger; and
- (k) said drive beam being positioned above and oriented transverse to the direction of motion of said primary drive plunger and having a first end and a second end, said second end being operatively connected to the upper end of said primary drive plunger and said first end being operatively connected near the upper end of said staple driving knife so that motion of said primary drive plunger in a generally linear direction between said extended position and said retracted position causes an approximately simultaneous and equal motion of said staple driving knife in a direction generally parallel to the direction of motion of said primary drive plunger.
Parent Case Info
This application is a division of application Ser. No. 203,485, filed June 6, 1988, now U.S. Pat. No. 4,858,813, which is a divisional of application Ser. No. 076,327, filed July 22, 1987 now U.S. Pat. No. 4,770,335, which is a divisional of application Ser. No. 794,305, filed Nov. 1, 1985, now U.S. Pat. No. 4,700,876.
US Referenced Citations (10)
Divisions (3)
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Number |
Date |
Country |
Parent |
203485 |
Jun 1988 |
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Parent |
76327 |
Jul 1987 |
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Parent |
794305 |
Nov 1985 |
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