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US3743161A Expired / Lapsed US ⏱️ 0.0 years remaining

Fastener applying device

Assignee: Individual
•
Filing: 1971-06-18
•
Granted: 1973-07-03
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Expires: 1991-06-18
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Abstract

Abstract This invention relates to a pneumatically operated stapling device for fastening multiple pieces of material together and particularly relates to the improved location of the device''s manual gripping handle. The device has an upper member that has an ejection chute at one of its ends to guide a reciprocably mounted driver and the upper member has means for guiding and feeding staples to the ejection chute. The upper member is pivotally connected to one end of an underlying base member that has a free end that is pointed for piercing material and has an anvil section for gripping material against the upper member while clinching the legs of a staple ejected from the upper member. Rigid means is operably connected to the driver, to the base member and to a piston that is reciprocably mounted in a cylinder that is attached to one of the members. One end of the cylinder is closed but has means for intermittently admitting pressure air into its closed end to exert pneumatic pressure against both members to move them to grip opposite sides of material while the inducted pressure air is moving the piston against the rigid means to force the driver to eject a staple into the material. A hand grip for the palm and the fingers of one hand is attached to the device to provide a hand gripping surface that extends substantially at right angle to the direction taken by the pointed end of the base member when piercing material so that manual pressure against the hand grip to force the pointed end of the base member to pierce material will be absorbed directly against the palm of the operator''s hand.

Inventors

  • 👤 H Spencer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 13:50
CPC Classifications
B; B25; B25C; B25C5/00; B25C5/10; B25C5/13; B25C5/02; B25C5/0285; B25C5/0292

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 119 words
A power operated stapler comprising an upper member containing a staple magazine and a reciprocable staple driver, a lower member pivoted at one end to said upper member and having a staple clinching means at its other end, a cylinder unit attached to said upper member, a piston reciprocable in said cylinder, a lever connected at one end to said driver and at its other end to said piston and pivoted intermediate its ends to said lower member, means for admitting pressure air to said cylinder to move said piston whereby said lower member will clamp the work between said upper and lower member and said lever will actuate said driver to drive a staple through the clamped work.
Claim 2
Dependent Claim 119 words
A power operated stapler comprising an upper member containing a staple magazine and a reciprocable staple driver, a lower member pivoted at one end to said upper member and having a staple clinching means at its other end, a cylinder unit attached to said upper member, a piston reciprocable in said cylinder, a lever connected at one end to said driver and at its other end to said piston and pivoted intermediate its ends to said lower member, means for admitting pressure air to said cylinder to move said piston whereby said lower member will clamp the work between said upper and lower member and said lever will actuate said driver to drive a staple through the clamped work.
Claim 3
Dependent Claim 29 words
A stapling device as set forth in claim 1, and a resilient means between said lower member and said piston whereby said lower member will resiliently clamp the material.
Claim 4
Dependent Claim 52 words
A stapling device as set forth in claim 2, means between said spring and said piston that is operatively connected to said lever and means for exhausting said pressure air to thereby permit said resilient means to reverse fastener applying movement of the driver, the lever, the lower member and the piston.
Claim 5
Dependent Claim 136 words
A power actuated stapler comprising an upper member containing a staple magazine and a staple driver reciprocable betwwen a raised normal position and a lower staple driven position, a spring resiliently biasing said driver to said normal position, a lower member pivoted at one end to said upper member and having staple clinching means at its other end, a cylinder attached to said lower member, a piston reciprocable in said cylinder, a lever connected at one end to said driver and at its other end to said piston and pivoted intermediate its ends to said lower member, means for admitting pressure air to said cylinder whereby said upper member will clamp the work between said upper and lower members and subsequently over come said spring bias to actuate said driver to drive and clinch a staple.
Claim 6
Dependent Claim 136 words
A power actuated stapler comprising an upper member containing a staple magazine and a staple driver reciprocable betwwen a raised normal position and a lower staple driven position, a spring resiliently biasing said driver to said normal position, a lower member pivoted at one end to said upper member and having staple clinching means at its other end, a cylinder attached to said lower member, a piston reciprocable in said cylinder, a lever connected at one end to said driver and at its other end to said piston and pivoted intermediate its ends to said lower member, means for admitting pressure air to said cylinder whereby said upper member will clamp the work between said upper and lower members and subsequently over come said spring bias to actuate said driver to drive and clinch a staple.
Claim 7
Dependent Claim 33 words
A stapling device as set forth in claim 1, wherein pressure air admitted into said cylinder will exert force against said upper member to urge it to grip one side of said material.
Claim 8
Dependent Claim 33 words
A stapling device as set forth in claim 1, wherein said cylinder depends from adjacent the pivot end of said upper and lower members to form a hand grip for the operators hand.
Claim 9
Dependent Claim 39 words
A stapling device as set forth in claiM 6, wherein a lever is attached to said lower member and extends adjacent said hand grip whereby the work may be manually clamped prior to admitting pressure air to said cylinder.
Claim 10
Dependent Claim 33 words
A stapling device as set forth in claim 4, wherein said cylinder depends from adjacent the pivot end of said upper and lower members to form a hand grip for the operators hand.

References Cited (Backward Citations)

US1005269A Cited
US2461165A Cited
US2795787A Cited
US3373490A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-07-02 1977-01-01 1977-07-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-07-02 1981-01-01 1981-07-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-07-02 1985-01-01 1985-07-03 $7700.00 Window Closed / Lapsed

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