US4168754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact tool
Assignee: Individual
•
Filing: 1977-04-26
•
Granted: 1979-09-25
•
Expires: 1997-04-26
Abstract
Abstract A vibration damper for an impact tool comprises a damping material which at least partly surrounds the working part of the tool, a heat shrinkable sleeve for holding the damping material in place on the working part of the tool.
Inventors
- 👤 Bengt V. Nyholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:28
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/02; Y; Y10; Y10S; Y10S173/00; Y10S173/02; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20732; Y10T74/20834; Y10T74/20864; Y10T74/2087
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
135 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a flowable vibration damping material (19;42;62) which at least partly surrounds the working part of the tool; and an envelope (16) which surrounds the working part (10) of the tool and the flowable vibration damping material, the envelope being in contact with the working part to hold the flowable vibration damping material in place, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the flowable vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the flowable vibration damping material.
Claim 2
Dependent Claim
135 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a flowable vibration damping material (19;42;62) which at least partly surrounds the working part of the tool; and an envelope (16) which surrounds the working part (10) of the tool and the flowable vibration damping material, the envelope being in contact with the working part to hold the flowable vibration damping material in place, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the flowable vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the flowable vibration damping material.
Claim 3
Dependent Claim
24 words
An impact tool according to claim 1, wherein the vibration damping material (42) is eccentrically arranged relative to the longitudinal axis of the tool.
Claim 4
Dependent Claim
48 words
An impact tool according to claim 1, wherein the heat shrinkable sleeve (16) is fastened to the working part (10) of the tool by means of an adhesive which is pre-applied to the heat shrinkable sleeve, which adhesive adheres at the skrinking temperature of the heat shrinkable sleeve.
Claim 5
Dependent Claim
22 words
An impact tool according to claim 1, wherein the tool comprises a protection collar (14;65) situated forward of the vibration damper (11).
Claim 6
Dependent Claim
22 words
An impact tool according to claim 4, wherein the protection collar (65) is eccentric relative to the longitudinal axis of the tool.
Claim 7
Dependent Claim
16 words
An impact tool according to claim 1, wherein the vibration damping material is a liquid-like material.
Claim 8
Dependent Claim
18 words
An impact tool according to claim 6, wherein the liquid-like material (19) is enclosed in a bag (18).
Claim 9
Dependent Claim
27 words
An impact tool according to claim 7, wherein the bag (18) is divided into sections in order to secure an even distribution of the liquid-like material (19).
Claim 10
Dependent Claim
25 words
An impact tool according to claim 1, wherein the vibration damper (11) extends along a minor part of the length of the working part (10).
Claim 11
Dependent Claim
48 words
An impact tool according to claim 2, wherein the heat shrinkable sleeve (16) is fastened to the working part (10) of the tool by means of an adhesive which is pre-applied to the heat shrinkable sleeve, which adhesive adheres at the shrinking temperature of the heat shrinkable sleeve.
Claim 12
Dependent Claim
27 words
An impact tool according to claim 8, wherein the sections are arranged around the periphery of the tool and extend in the longitudinal direction of the tool.
Claim 13
Dependent Claim
37 words
An impact tool according to claim 1, wherein the heat shrinkable sleeve contacts the working part (10) of the tool at least both above and below, in the longitudinal direction of the tool, the vibration damping material.
Claim 14
Dependent Claim
48 words
An impact tool according to claim 14, wherein the heat shrinkable sleeve (16) is fastened to the working part (10) of the tool by means of an adhesive which is pre-applied to the heat shrinkable sleeve, which adhesive adheres at the shrinking temperature of the heat shrinkable sleeve.
Claim 15
Dependent Claim
61 words
An impact tool according to claim 6, wherein the heat shrinkable sleeve contacts, in a liquid tight manner, the working part (10) of the tool at least both above and below, in the longitudinal direction of the tool, the vibration damping material to contain the liquid-like material between the contact areas of the sleeve with the working part of the tool.
Claim 16
Dependent Claim
48 words
An impact tool according to claim 14, wherein the heat shrinkable sleeve (16) is fastened to the working part (10) of the tool by means of an adhesive which is pre-applied to the heat shrinkable sleeve, which adhesive adheres at the shrinking temperature of the heat shrinkable sleeve.
Claim 17
Dependent Claim
121 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a liquid-like vibration damping material (19;42;62) which at least partly surrounds the working part (10) of the tool; and an envelope (16) which surrounds the working part (10) of the tool and the vibration damping material to contain the vibration damping material, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the vibration damping material.
Claim 18
Dependent Claim
121 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a liquid-like vibration damping material (19;42;62) which at least partly surrounds the working part (10) of the tool; and an envelope (16) which surrounds the working part (10) of the tool and the vibration damping material to contain the vibration damping material, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the vibration damping material.
Claim 19
Dependent Claim
134 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a liquid-like vibration damping material (19) which at least partly surrounds the working part (10) of the tool; a bag (18) in which the liquid-like vibration damping material (19) is enclosed; and an envelope (16) which surrounds the working part (10) of the tool and the bag containing the vibration damping material, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the bag and the vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the vibration damping material.
Claim 20
Dependent Claim
134 words
An impact tool comprising a working part (10) and a vibration damper (11), the improvement wherein the vibration damper (11) comprises: a liquid-like vibration damping material (19) which at least partly surrounds the working part (10) of the tool; a bag (18) in which the liquid-like vibration damping material (19) is enclosed; and an envelope (16) which surrounds the working part (10) of the tool and the bag containing the vibration damping material, the envelope comprising a heat shrinkable sleeve which is shrinkable upon application of heat thereto and which is caused to shrink around the working part of the tool and around the bag and the vibration damping material by application of heat to the heat shrinkable sleeve while it is surrounding the working part of the tool and the vibration damping material.
Claim 21
Dependent Claim
27 words
An impact tool according to claim 17, wherein the bag (18) is divided into sections in order to secure an even distribution of the liquid-like material (19).
Claim 22
Dependent Claim
27 words
An impact tool according to claim 18, wherein the sections are arranged around the periphery of the tool and extend in the longitudinal direction of the tool.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |