US3720364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool for driving and setting headless nails or metal tacks
Assignee: Individual
•
Filing: 1971-03-24
•
Granted: 1973-03-13
•
Expires: 1991-03-24
Abstract
Abstract An improved tool for driving and setting headless nails or metal tacks is disclosed, comprising a driving device which is associated with a novel magazine essentially consisting of a casing closed by a slidable member, both defining therein a passage for housing and guiding a plurality of headless nails which are elastically pushed into a T-contoured ejection passage where they are driven by a ribbed and pointed ejector connected to the driving device. Moveable parts inside the magazine can partially take up or fill the passage for housing and guiding headless nails of different lengths.
Inventors
- 👤 B Maestri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:19
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/001; B25C1/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
168 words
A tool for driving headless nails and tacks comprising driving means; a magazine associated with said driving means and having an open side; an elongated flat member slidably closing the open side of said magazine; a horizontal passage for housing the nails, defined by the internal faces of said magazine and of said elongated member; a spring operated thrust member for urging the nails along the passage toward one end of the magazine; an ejection passage joining the one end of the magazine, for receiving the nails urged from the magazine by the thrust member; an ejector driven by the driving means, said ejector being slidably mounted in the ejection passage to drive the nails as they are fed from said magazine; a longitudinal bar located in said magazine, said bar being moveable within said magazine to restrict the vertical size of said passage so that said passage can accommodate nails of varying lengths; and adjusting means for urging said bar into a predetermined position within said magazine.
Claim 2
Dependent Claim
168 words
A tool for driving headless nails and tacks comprising driving means; a magazine associated with said driving means and having an open side; an elongated flat member slidably closing the open side of said magazine; a horizontal passage for housing the nails, defined by the internal faces of said magazine and of said elongated member; a spring operated thrust member for urging the nails along the passage toward one end of the magazine; an ejection passage joining the one end of the magazine, for receiving the nails urged from the magazine by the thrust member; an ejector driven by the driving means, said ejector being slidably mounted in the ejection passage to drive the nails as they are fed from said magazine; a longitudinal bar located in said magazine, said bar being moveable within said magazine to restrict the vertical size of said passage so that said passage can accommodate nails of varying lengths; and adjusting means for urging said bar into a predetermined position within said magazine.
Claim 3
Dependent Claim
168 words
A tool for driving headless nails and tacks comprising driving means; a magazine associated with said driving means and having an open side; an elongated flat member slidably closing the open side of said magazine; a horizontal passage for housing the nails, defined by the internal faces of said magazine and of said elongated member; a spring operated thrust member for urging the nails along the passage toward one end of the magazine; an ejection passage joining the one end of the magazine, for receiving the nails urged from the magazine by the thrust member; an ejector driven by the driving means, said ejector being slidably mounted in the ejection passage to drive the nails as they are fed from said magazine; a longitudinal bar located in said magazine, said bar being moveable within said magazine to restrict the vertical size of said passage so that said passage can accommodate nails of varying lengths; and adjusting means for urging said bar into a predetermined position within said magazine.
Claim 4
Dependent Claim
168 words
A tool for driving headless nails and tacks comprising driving means; a magazine associated with said driving means and having an open side; an elongated flat member slidably closing the open side of said magazine; a horizontal passage for housing the nails, defined by the internal faces of said magazine and of said elongated member; a spring operated thrust member for urging the nails along the passage toward one end of the magazine; an ejection passage joining the one end of the magazine, for receiving the nails urged from the magazine by the thrust member; an ejector driven by the driving means, said ejector being slidably mounted in the ejection passage to drive the nails as they are fed from said magazine; a longitudinal bar located in said magazine, said bar being moveable within said magazine to restrict the vertical size of said passage so that said passage can accommodate nails of varying lengths; and adjusting means for urging said bar into a predetermined position within said magazine.
Claim 5
Dependent Claim
25 words
A tool as defined in claim 1, wherein at least two longitudinal bars are provided within said magazine, adjusting means being provided for each bar.
Claim 6
Dependent Claim
97 words
A tool as defined in claim 2, wherein said adjusting means comprises: two spaced pluralities of balls, each plurality being in permanent contact with each of the bars; a cam-plate having a spaced pair of stepped recesses therein to lodge said balls, said recesses having a depth less than the radius of said balls; means for adjusting the horizontal position of said cam-plate so that said recesses may be brought into or out of alignment with either one or both or none of the pluralities of balls; and spring means for urging said bars toward said balls.
Claim 7
Dependent Claim
47 words
A tool in accordance with claim 3 wherein said magazine further includes a longitudinal slot along the upper portion thereof and wherein said means for adjusting the position of said cam-plate comprises a handgrip on the upper portion of said cam-plate, said handgrip passing through said slot.
Claim 8
Dependent Claim
49 words
The tool of claim 1, wherein said ejection passage has a T-shaped contour and said ejector has a T-shaped cross section, the lower portion of the ejector being chamfered to terminate in a point having a transverse dimension slightly exceeding the diameter of the headless nails to be driven.
Claim 9
Dependent Claim
36 words
The tool of claim 1, wherein the elongated flat member closing the open side of the magazine is slidably attached at one side of said magazine and is held in closing position by a catch means.
Claim 10
Dependent Claim
25 words
The tool of claim 6, wherein the open side of said magazine is at the bottom thereof and said catch means is a latching device.
Claim 11
Dependent Claim
57 words
A tool in accordance with claim 1 wherein said adjusting means comprises: spring means for urging said bar in the direction of said flat member such that said bar engages the nails when long nails are used and said bar engages said flat member when short nails are used effectively varying the vertical size of said passage.
Claim 12
Dependent Claim
83 words
A tool in accordance with claim 1 wherein: said bar is provided with a longitudinally extending horizontal cavity therein and a plurality of protrusions within said cavity; and said adjusting means includes a cam-plate within said cavity, a plurality of spaced recesses in said cam-plate to lodge said protrusions, means for adjusting the horizontal position of said cam-plate so that said recesses may be brought into or out of alignment with said protrusions, and spring means for urging said protrusions toward said recesses.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |