Structure of handle for mini-handsaw

• US 6,789,326 B1
• Filed: 04/14/2003
• Issued: 09/14/2004
• Est. Priority Date: 04/14/2003
• Status: Expired due to Fees

• Current Assignee: Yin-Hai Huang
• Original Assignee: Yin-Hai Huang
• Inventors: Huang, Yin-Hai
• Primary Examiner(s): Goodman, Charles
• Application Number:
  US10/412,308
• Time in Patent Office: 519 Days
• Field of Search: 305/17, 301/62, 305/07, D 8/95, D 8/97
• US Class Current: 30/517
• CPC Class Codes: B23D 51/01 characterised by the handle
• CPC Class Codes: B23D 51/10 for hand-held or hand-operated devices
• CPC Class Codes: B23D 51/14 Attachment of the tool

Abstract

A structure of handle for mini-handsaw includes a handle having a gap to engage a saw blade therein, a slider in cooperation with a locking member slidably engaged within a rectangular opening of the handle for releasably gripping the inner end of the blade and a swivel arrester fastening the middle portion of the blade through a slot and a depression of the handle. This handle is characterized in a convenient embedment or disengagement of the saw blade and the engagement is very stable.

Claims

1. A structure of handle for mini-handsaw comprising:

a handle combined with a first and a second halves and secured by a plurality of bolts to define a gap therebetween, wherein said first half having a plurality of vertical positioning groove in innerwall, a pair of first longitudinal guides on upper and lower inner walls extended along the length thereof and a horizontal slot adjacent front end on opposite side of which is a depression composed of a pair of semi-circular reverse sloped surfaces, said second half having a rectangular opening extended along the length thereof and pair of second longitudinal guides in upper and lower walls of said opening;

a slider having a thumbprint outer surface, a pair of outer guides respectively formed in upper and lower edges each having a protrudent plate at inner side slidable in the second longitudinal guides of said second half, an inner sliding slot symmetrically formed by a pair of upper and lower L-shaped plates which are slidable on the first longitudinal guides of said first half, a U-shaped frame extended rearward from said lower L-shaped plate having a stopper on inner end engageable within the vertical positioning grooves of said first half, a pair of first semi-circular concaves and a pair of second semi-circular concaves spacedly and respectively formed in said upper and lower outer guides;

a locking member slidably connected to the rear and of said slider having a pair of outer sliding bars respectively and parallel extended forward from upper and lower edges thereof slidable within outer guides of said slider each including a hook on inner end toward each other and engageable within the first and/or second semi-circular concaves of said slider, an inner sliding plate extended forward from inner edge slidably inserted into the inner sliding slot of said slider including an elastic plate in center, a bevel end blade holder on a center of the elastic plate and an elastic press block on rear end thereof connected to said elastic plate;

a swivel arrester having a gripping plate and a T-shaped lock centrally projected from inner surface of said gripping plate and inserted into the horizontal slot of said first half and engaged with the reverse semi-circular surfaces of said depression;

a saw blade having a circular hole abutting each end and inserted into the gap of said handle and the inner sliding slot of said slider until that the circular hole of said saw blade is held by the blade holder of said locking member.

2. The structure of handle as recited in claim 1 wherein said locking member is pulled rearward to fix said stopper into one of said vertical positioning grooves.

3. The structure of handle as recited in claim 1 wherein said press block is pressed inward to release the circular hole of said saw blade from said blade holder.

4. The structure of handle as recited in claim 1 wherein said swivel arrester turns 90°

to grip a middle portion of said saw blade.

5. A structure of handle for mini-handsaw comprising:

a handle combined with a first and a second halves and secured by a plurality of bolts to define a gap therebetween, wherein said first half having a plurality of vertical positioning grooves in innerwall, a pair of first longitudinal guides on upper and lower inner walls extended along the length thereof, a bowed frame extended forward from front end thereof including a horizontal slot in a reduced end and a depression composed of a pair of semi-circular reverse sloped surfaces on opposite side of said slot, said second half having a rectangular opening extended along the length thereof and a pair of second longitudinal guides in upper and lower walls of said opening;

a slider having a thumbprint outer surface, a pair of outer guides respectively formed in upper and lower edges each having a protrudent plate at inner side slidable in the second longitudinal guides of said second half, an inner sliding slot symmetrically formed by a pair of upper and a lower L-shaped plates which are slidable on the first longitudinal guides of said first half, a U-shaped frame extended rearward from said lower L-shaped plate having a stopper on inner end engageable within the vertical positioning grooves of said first half, a pair of first semi-circular concaves and a pair second semi-circular concaves spacedly and respectively formed in said upper and lower outer guides;

a locking member slidably connected to the rear end of said slider having a pair of outer sliding bars respectively and parallel extended forward from upper and lower edges thereof slidable within the outer guides of said slider each including a hook on inner end toward each other and engageable within the first and/or second semi-circular concaves of said slider, an inner sliding plate extended forward from inner edge slidably inserted into the inner sliding slot of said slider including an elastic plate in center, a bevel end blade holder on a center of the elastic plate and an elastic press block on rear end connected to said elastic plate;

a swivel arrester having gripping plate and a T-shaped lock centrally projected from inner surface of said gripping plate and inserted into the horizontal slot of said first half and engaged with the reverse semi-circular surfaces of said depression;

a saw blade inserted into the gap of said handle and the inner sliding slot of said slider having a circular hole abutting each end being held by the blade holder of said locking member and an outer end gripped by said swivel arrester at the reduced end of said bowed frame.

6. The structure of handle as recited in claim 5 wherein said locking member is pulled rearward to fix said stopper into one of said vertical positioning grooves.

7. The structure of handle as recited in claim 5 wherein said press block is pressed inward to release the circular hole of said saw blade from said blade holder.

8. The structure of handle as recited in claim 5 wherein said swivel arrester turns 90°

to grip the outer end of said saw blade.