Patent US4655861A successfully refreshed from Google Patents.
US3554251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detachable bit ratchet hand tool
Assignee: Klein Tools Inc
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Filing: 1968-08-15
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Granted: 1971-01-12
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Expires: 1988-08-15
Abstract
Abstract A detachable bit ratchet hand tool having an axially aligned handle bit and adapter and a ratchet means coupling the handle and bit adapter for selective combination, reverse and forward driving, and a spring in said adapter for quick-connect and quick-release engagement of tool bits.
Inventors
- 👤 Russell E Mclogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/02; B25B15/04; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17136; Y10T279/17153
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
178 words
A detachable bit hand tool comprising an axially aligned grip and bit adapter, ratchet means coupling and in line with said grip and said adapter, said ratchet means comprising a shaft, a pinion corotatably secured thereto, a pair of pawls and selector means in engagement with said pawls, said selector means being movable to combination, forward and reverse driving positions in which positions the pawls are selectively engaged with and disengaged from said pinion, and a bit holder comprising a generally U-shaped spring anchored to one end of said shaft and positioned within said adapter, said adapter defining a socket confronting said U-shaped spring to receive one end of a bit, a bit, said bit and said socket defining interlocking keying means to corotatably seat and retain said bit within said adapter, whereby when said selector means is moved to combination driving position, the handle and adapter are locked for corotation and when said selector means is moved to reverse and forward driving positions the grip and adapter are locked for corotation in one direction of rotation only.
Claim 2
Dependent Claim
178 words
A detachable bit hand tool comprising an axially aligned grip and bit adapter, ratchet means coupling and in line with said grip and said adapter, said ratchet means comprising a shaft, a pinion corotatably secured thereto, a pair of pawls and selector means in engagement with said pawls, said selector means being movable to combination, forward and reverse driving positions in which positions the pawls are selectively engaged with and disengaged from said pinion, and a bit holder comprising a generally U-shaped spring anchored to one end of said shaft and positioned within said adapter, said adapter defining a socket confronting said U-shaped spring to receive one end of a bit, a bit, said bit and said socket defining interlocking keying means to corotatably seat and retain said bit within said adapter, whereby when said selector means is moved to combination driving position, the handle and adapter are locked for corotation and when said selector means is moved to reverse and forward driving positions the grip and adapter are locked for corotation in one direction of rotation only.
Claim 3
Dependent Claim
28 words
In the detachable bit hand tool of claim 1 in which said shaft defines a pair of prongs staked over to anchor said U-shaped spring to said shaft.
Claim 4
Dependent Claim
38 words
In the detachable bit hand tool of claim 1 in which said U-shaped spring is horseshoe-shaped and said bit end defines concave sections snap-connectable to said spring for quick-release and quick-connection of the bit to the hand tool.
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |