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US5499562A Expired / Lapsed US ⏱️ 0.0 years remaining

Exchangeable type screwdriver with work-head storage module(s)

Assignee: Individual
•
Filing: 1994-06-15
•
Granted: 1996-03-19
•
Expires: 2014-06-15
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Abstract

Abstract An exchangeable screwdriver with work-head storage module(s) mainly consisting of a support, a shank disposed in front of the support for connecting at its front end an exchangeable work-head, and at least one cabin type module detachably connected to a rear portion of the support and, together with the support, forming a handle of the screwdriver. Each of the cabin type modules has a plurality of holes provided at its front surface to each stably receive a spare exchangeable work-head therein. Multiple cabin type modules may be sequentially connected together to provide work-head storage space that is not limited by the size of a general screwdriver handle, so that the storage and carrying of multiple spare exchangeable work-heads can be more convenient.

Inventors

  • 👤 Yee-Chang Feng

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 20:01
CPC Classifications
B; B25; B25G; B25G1/00; B25G1/08; B25G1/085

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 145 words
A screwdriver comprising: a) a shank having a front end for detachably securing a selected work head thereon; b) a support connected to the shank, the support including a longitudinal axis, a canopy having a substantially semi-circular cross section, a pair of dovetail-groove longitudinal edges, and a pair of pits formed adjacent a rear inner periphery of the canopy; and c) a module having a substantially-circular cross section defining a pair of longitudinal sides, the module including a pair of axially extending flange ribs formed at the longitudinal sides for detachable engagement with the dovetail-groove longitudinal edges of the canopy in a direction which is substantially parallel with the longitudinal axis of the support, a plurality of holes for storing spare work heads, and a pair of bosses provided on a rear portion of the module for detachable engagement with the pits of the canopy.
Claim 2
Dependent Claim 145 words
A screwdriver comprising: a) a shank having a front end for detachably securing a selected work head thereon; b) a support connected to the shank, the support including a longitudinal axis, a canopy having a substantially semi-circular cross section, a pair of dovetail-groove longitudinal edges, and a pair of pits formed adjacent a rear inner periphery of the canopy; and c) a module having a substantially-circular cross section defining a pair of longitudinal sides, the module including a pair of axially extending flange ribs formed at the longitudinal sides for detachable engagement with the dovetail-groove longitudinal edges of the canopy in a direction which is substantially parallel with the longitudinal axis of the support, a plurality of holes for storing spare work heads, and a pair of bosses provided on a rear portion of the module for detachable engagement with the pits of the canopy.

References Cited (Backward Citations)

US1309281A Cited
US2409613A Cited
US2448168A Cited
US4227430A Cited
US4399723A Cited
US4278119A Cited
DE3004958A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-03-19 1999-09-18 2000-03-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-03-19 2003-09-18 2004-03-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-03-19 2007-09-18 2008-03-19 $7700.00 Window Closed / Lapsed

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