US3711008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact tools
Assignee: Individual
•
Filing: 1970-08-31
•
Granted: 1973-01-16
•
Expires: 1990-08-31
Abstract
Abstract Manual and pneumatically operated impact tools for driving fasteners into concrete through the utilization of the kinetic energy of a hammer impacting a driver. The tools are adapted to insure the perpendicularity of the fasteners and to drive the fasteners in close proximity to a wall or vertical surface.
Inventors
- 👤 P Clifford
- 👤 H Haytayan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:18
CPC Classifications
B; B27; B27F; B27F7/00; B27F7/17; B27F7/30; B27F7/34; B25; B25C; B25C1/00; B25C1/02; B25C1/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
166 words
An impact tool for driving fasteners through a workpiece into masonry surfaces or the like including: a driver housing having means to locate a workpiece in a position to receive a fastener above the workpiece and means to align the impact tool so that a fastener in the positioning station is substantially perpendicular to the surface into which the fastener is to be driven, including four leg members extending downward from the driver housing in a position to straddle the workpiece and a fifth leg member remote from the driver housing to provide stability; a driver positioned in the driver housing immediately above the fastener positioning station and movable downward through the fastener positioning station; means to impact the driver with a velocity sufficient to force the driver downward through the positioning station displacing a fastener in the positioning station; and fastener supply means adapted to position and hold a fastener in the pOsitioning station in the driver housing for each operation of the impact tool.
Claim 2
Dependent Claim
166 words
An impact tool for driving fasteners through a workpiece into masonry surfaces or the like including: a driver housing having means to locate a workpiece in a position to receive a fastener above the workpiece and means to align the impact tool so that a fastener in the positioning station is substantially perpendicular to the surface into which the fastener is to be driven, including four leg members extending downward from the driver housing in a position to straddle the workpiece and a fifth leg member remote from the driver housing to provide stability; a driver positioned in the driver housing immediately above the fastener positioning station and movable downward through the fastener positioning station; means to impact the driver with a velocity sufficient to force the driver downward through the positioning station displacing a fastener in the positioning station; and fastener supply means adapted to position and hold a fastener in the pOsitioning station in the driver housing for each operation of the impact tool.
Claim 3
Dependent Claim
22 words
The impact tool of claim 1 wherein the fifth leg member is attached to and extending downward from the fastener supply means.
References Cited (Backward Citations)
US2557000A
Cited
US3060440A
Cited
US3035268A
Cited
US3060441A
Cited
US3498517A
Cited
US3570738A
Cited
US3595460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |